Michel Armand

Michel Armand
Université de Picardie Jules Verne | UPJV · UFR of sciences

PhD

About

641
Publications
198,645
Reads
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80,629
Citations
Citations since 2017
226 Research Items
47207 Citations
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201720182019202020212022202302,0004,0006,0008,000
Additional affiliations
September 2011 - present
CIC Energigune
Position
  • Senior Researcher
January 2011 - December 2015
Université de Picardie Jules Verne
Position
  • Professor Emeritus

Publications

Publications (641)
Article
Battery energy storage plays a pivotal role in the current energy transition due to exponential growth of the energy sector. Excess energy produced in the grid and increasing renewable energy production require efficient energy storage system to be developed. The development of such energy storage systems requires efficient materials screening, pro...
Article
Flexible zinc‐air batteries are based on gel polymer electrolytes (GPE), soft, semi‐solid components devoted to liquid electrolyte retention, ion conduction, and mechanical stability. Many synthetic polymers, and their blends, have been used in early works due to the good compromise between ionic conductivity, water retention, and mechanical resist...
Article
Rechargeable lithium metal polymer batteries (LMPBs) utilizing solid polymer electrolytes (SPEs) have gained increasing attention during the past five decades, owing to the superior flexibility, good process‐ability, and no‐leakage of SPEs versus traditional non‐aqueous liquid and inorganic solid electrolytes. Undoubtedly, among all of the SPE comp...
Article
Full-text available
The advent of Li-metal batteries has seen progress toward studies focused on the chemical modification of solid polymer electrolytes, involving tuning either polymer or Li salt properties to enhance the overall cell performance. This study encompasses chemically modifying simultaneously both polymer matrix and lithium salt by assessing ion coordina...
Article
Solid-state polymer electrolytes are considered as an alternative to classic liquid electrolytes, particularly for application in high-energy lithium metal batteries. With respect to common dual-ion conductors, single-ion conducting polymer electrolytes (SIC-PEs) are less affected by lithium dendrites growth and thus are particularly interesting fo...
Article
Coulombic efficiency (CE) should be recognized as a key battery parameter since values lower than 98% are indicative of a significant loss in battery performance. CE is directly impacted by the production process in terms of speed and duration. Thus, this work reveals that regardless of the initial CE of the cell, the slurry mixing time of the PEO-...
Article
Full-text available
Solid electrolytes are renowned for their nonflammable, dendrite-blocking qualities, which also exhibit stability over large potential windows. NASICON-type Na1+xZr2SixP3-xO12 (NZSP) is a well-known solid electrolyte material for sodium metal batteries owing to its elevated room temperature sodium-ion (Na+) conductivity and good electrochemical sta...
Article
Full-text available
Densification of ceramic electrolytes is a key enabler in producing electrolyte pellets for solid-state batteries. This requires understanding the correlation between the starting grain size of electrolytes, chemical phase evolution and degree of compaction which determine ion conductivity and chemical stability of solid electrolytes. In our work w...
Article
Solid-state lithium metal batteries (SSLMBs) are considered an auspicious technology to develop high energy density and safe energy storage devices. The double layer polymer electrolyte (DLPE) is a rational approach for engineering high-performance SSLMBs addressing electrolyte requirements with specifically designed polymers at the positive electr...
Article
Since the oil crisis in the 1970s, the importance of rechargeable batteries has been noted by academia and industrial sectors. This becomes more prominent with increasing demand in e-mobility and...
Article
Rechargeable magnesium batteries (RMBs) have been considered as one of the most viable battery chemistries amongst the "post" lithium-ion battery (LIB) technologies owing to their high volumetric capacity and natural abundance of the key elements. The fundamental properties of Mg-ion conducting electrolytes are of essence to regulate the overall pe...
Article
Rechargeable magnesium batteries (RMBs) have been considered as one of the most viable battery chemistries amongst the “post” lithium‐ion battery (LIB) technologies owing to their high volumetric capacity and natural abundance of the key elements. The fundamental properties of Mg‐ion conducting electrolytes are of essence to regulate the overall pe...
Article
Motivated by the request to build shape-conformable flexible, wearable and customizable batteries while maximizing the energy storage and electrochemical performances, additive manufacturing (AM) appears as a revolutionary discipline. Battery components such as electrodes, separator, electrolyte, current collectors and casing can be tailored with a...
Article
Recycling lithium from spent batteries is challenging because of problems with poor purity and contamination. Here, we propose a green and sustainable lithium recovery strategy for spent batteries containing LiFePO4, LiCoO2, and LiNi0.5Co0.2Mn0.3O2 electrodes. Our proposed configuration of “lithium-rich electrode || LLZTO@LiTFSI+P3HT || LiOH” syste...
Article
Rechargeable lithium-based batteries built with high-energy anode materials (e.g., silicon-based and silicon-derivative materials) are considered a feasible solution to satisfy the stringent requirements imposed by emerging markets, including electric vehicles and grid storage, due to their higher energy density compared to contemporary lithium-ion...
Article
Full-text available
Polymer electrolytes provide a safe solution for all-solid-state high energy density batteries. Materials that meet the simultaneous requirement of high ionic conductivity and high transference number remain a challenge, in particular for new battery chemistries beyond Lithium such as Na, K and Mg. Herein, we demonstrate the versatility of a polyme...
Article
Full-text available
Solid-state batteries are the holy grail for the next generation of automotive batteries. The development of solid-state batteries requires efficient electrolytes to improve the performance of the cells in terms of ionic conductivity, electrochemical stability, interfacial compatibility, and so on. These requirements call for the combined propertie...
Article
Rechargeable lithium metal batteries (LMBs) are deemed as a viable solution to improve the power and/or energy density of the contemporary lithium‐ion batteries (LIBs). However, poor Li‐ion diffusivity within high‐energy cathodes causes sluggish kinetics of the corresponding redox reactions particularly at high C‐rates, thereby largely impeding the...
Article
From the literature overview, lithium difluorophosphate salt, LiPO2F2, is considered a powerful electrolyte additive capable of enhancing lithium-ion batteries’ capacity retention. Lower cell impedance associated with SEI and/or CEI layers composition and texture modifications had been widely demonstrated, but without providing clear mechanisms. Th...
Article
Polymer electrolytes (PEs) with excellent flexibility, processability, and good contact with lithium metal (Li°) anodes have attracted substantial attention in both academic and industrial settings. However, conventional poly(ethylene oxide) (PEO)-based PEs suffer from a low lithium-ion transference number (TLi+), leading to a notorious concentrati...
Article
Full-text available
The increasing demand for electrical energy storage requires the exploration of alternative battery chemistries that overcome the limitations of the current state-of-the-art lithium-ion batteries. In this scenario, lithium-sulfur batteries stand out for their high theoretical energy density. However, several inherent limitations still hinder their...
Article
Undesired chemical degradation of lithium hexafluorophosphate (LiPF6) in non-aqueous liquid electrolytes is a Gordian knot in both science and technology, which largely impedes the practical deployment of large-format lithium-ion batteries (LIBs) in emerging applications (e.g., electric vehicles). From a fresh perspective that the decomposition of...
Article
The inherent properties of non-aqueous electrolytes are highly associated with the identity of salt anions. To build highly conductive and chemically/electrochemically robust electrolytes for lithium-ion batteries (LIBs) and rechargeable lithium metal batteries (RLMBs), various kinds of weakly coordinating anions have been proposed as counterparts...
Article
Future rechargeable Li metal batteries (LMBs) require a rational electrolyte design to stabilize the interfaces between the electrolyte and both the lithium metal anode and the high voltage cathode. This remains the greatest challenge in achieving high cycling performance in LMBs. We report an ether-aided ionic liquid electrolyte which offers super...
Article
Full-text available
Li-S batteries, as the most promising post Li-ion technology, have been intensively investigated for more than a decade. Although most previous studies have focused on liquid systems, solid electrolytes, particularly all-solid-state polymer electrolytes (ASSPEs) and quasi-solid-state polymer electrolyte (QSSPEs), are appealing for Li-S cells due to...
Article
Comb‐like polymers are one of the most auspicious candidates for building fully amorphous and highly conductive solid polymer electrolytes (SPEs), which are essential components to develop high‐performance solid‐state rechargeable lithium metal batteries (RLMBs). Herein, two kinds of comb‐like polymers containing either polymethacrylate or polyacry...
Article
Full-text available
Rechargeable Li-based battery technologies utilising silicon, silicon-based, and Si-derivative anodes coupled with high-capacity/high-voltage insertion-type cathodes have reaped significant interest from both academic and industrial sectors. This stems from their practically achievable energy density, offering a new avenue towards the mass-market a...
Article
Solid-state Lithium-metal batteries based on polymer electrolytes hold the most promising prospect to face energy density and safety issues encountered by conventional Li-ion batteries. The use of two different polymers, one for the cathode and another one as electrolyte, brings a sufficient energy gap and chemical stability allowing compatibility...
Article
Full-text available
The use of gel polymer electrolytes (GPEs) is of great interest to build high-performing rechargeable lithium metal batteries (LMBs) owing to the combination of good electrochemical properties and improved safety. Herein, we report a facile and scalable one-pot preparation method of a GPE based on highly safe polyethylene glycol dimethyl ether (PEG...
Article
Full-text available
The significant impact of the process steps on the electrode performance is one of the least developed aspects in the field of solid‐state batteries despite being a key issue for the transference of lab scale developments to production scale. To demonstrate that the knowledge of production parameters is essential, a set of high active material load...
Article
Full-text available
The current Li-based battery technology is limited in terms of energy contents. Therefore, several approaches are considered to improve the energy density of these energy storage devices. Here, we report the combination of a heteroatom-based gel polymer electrolyte with a hybrid cathode comprising of a Li-rich oxide active material and graphite con...
Article
Full-text available
Originating from “rocking‐chair concept”, lithium‐ion batteries (LIBs) have become one of the most important electrochemical energy storage technologies, which have largely impacted our daily life. The utilization of electrolyte additives in small quantities (≤5% by wt or vol) has been long viewed as an economical and efficient approach to regulate...
Article
Full-text available
Solid-state lithium metal batteries (SSLMBs) are promising next-generation high-energy rechargeable batteries. However, the practical energy densities of the reported SSLMBs have been significantly overstated due to the use of thick solid-state electrolytes, thick lithium (Li) anodes, and thin cathodes. Here, a high-performance NASICON-based SSLMB...
Article
Full-text available
The development of highly conductive and safe electrolytes for sodium-ion batteries is an emerging field beyond lithium battery technologies. In this work we have developed new ionogel electrolytes consisting of a binary mixture of an organic ionic plastic crystal, N -ethyl- N -methylpyrrolidiniumbis(fluorosulfonyl)imide (C 2 mpyrFSI), mixed with N...
Article
In a world with a growing demand in high energy storage systems and the challenge of finding new green energy sources to replace the excessively used fossil fuels, electrochemical energy storage arises as the key alternative to meet the needs of current society. In particular, lithium batteries stand out among all the available energy-storage techn...
Preprint
Full-text available
Polymer electrolytes provide a safe solution for all-solid-state high energy density batteries. Materials that meet the simultaneous requirement of high ionic conductivity and high transference number remain a challenge, in particular for new battery chemistries beyond Lithium such as Na, K and Mg. Herein, we demonstrate the versatility of a polyme...
Preprint
Full-text available
Employing high-energy electrode couples and releasing the capacity of anions in the electrolyte are promising avenues to increase the energy density of existing lithium (Li)-based batteries. Herein, we develop a “shuttle-relay” Li metal battery (SRLMB) based on a hybrid Li-rich oxide cathode with graphite as conductive agent and a heteroatom-based...
Article
Organic ionic plastic crystals (OIPCs) are a class of solid-state electrolyte material with good thermal and electrochemical stability and higher safety due to their non-flammability and non-volatility. N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide, [C2mpyr][FSI] is an organic ionic plastic crystal that has previously shown promising elect...
Article
Full-text available
Lithium–sulfur batteries are attracting extensive attention for energy storage owing to their high theoretical energy density. However, their practical implementation is hindered because of inherent issues of the technology such as the shuttling effect of the polysulfide intermediates and the formation of dendritic lithium metal (Li⁰) deposits duri...
Article
An ethylene carbonate (EC)‐ and additive‐free base electrolyte, simply comprising an solid‐electrolyte‐interphase (SEI)‐forming salt (i.e., lithium (fluorosulfonyl)(n‐nonafluorobutanesulfonyl)imide (Li[(FSO2)(n‐C4F9SO2)N], LiFNFSI)) and dimethyl carbonate (DMC), for stable cycling graphite || LiNi0.6Mn0.2Co0.2O2 (NMC622) full cells at different tem...
Preprint
p>Future rechargeable Li metal batteries (LMBs) require a rational electrolyte design to stabilize the interfaces between the electrolyte and both the lithium metal anode and the high voltage cathode. This remains the greatest challenge in achieving high cycling performance in LMBs. We report an ether-aided ionic liquid electrolyte which offers...
Article
Full-text available
This paper focuses on the development of a polylactic acid (PLA)-based thermoplastic composite filament, for its use, once 3D-printed via Thermoplastic Material Extrusion (TME), as current collector at the negative electrode side of a lithium-ion battery or sodium-ion battery. A high electronic conductivity is achieved through the introduction of A...
Article
Full-text available
The interest for solid‐state lithium metal (Li°) batteries (SSLMBs) has been growing exponentially in recent years in view of their higher energy density and eliminated safety concerns. Solid polymer electrolytes (SPEs) are soft ionic conductors which can be easily processed into thin films at industrial level; these unique features confer solid‐st...
Article
Full-text available
Rechargeable alkali metal (i.e., lithium, sodium, potassium)‐based batteries are considered as vital energy storage technologies in modern society. However, the traditional liquid electrolytes applied in alkali metal‐based batteries mainly consist of thermally unstable salts and highly flammable organic solvents, which trigger numerous accidents re...
Article
The abundance of the available sodium sources has led to rapid progress in sodium-ion batteries (SIBs), making them potential candidates for immediate replacement of lithium-ion batteries (LIBs). However, commercialization of SIBs has been hampered by their fading efficiency due to the sodium consumed in the formation of solid-electrolyte interphas...
Article
The nature of salt anion is of particular relevance in determining the features of solid polymer electrolytes (SPEs). Here, lithium salt containing an extremely delocalized anion (Li[CF3SO(=NSO2CF3)2], LisTFSI) is introduced into SPEs utilizing poly(ethylene oxide) (PEO) as matrix, aiming to elucidate the role of negative charge delocalization on t...
Article
We have previously reported that water addition (∼1000 ppm) to an N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide (C3mpyrFSI) superconcentrated ionic liquid electrolyte (50 mol % NaFSI) promoted the formation of a favorable solid electrolyte interphase (SEI) and resulted in enhanced cycling stability. This study reports the characterization...
Article
Full-text available
As one of the recipients of the 2019 Nobel Prize in Chemistry, John B. Goodenough has made significant contributions across chemistry and physics including the development of critical cathode materials for lithium‐ion batteries, the understanding of d‐electron behavior in transition‐metal oxides, and transport properties of perovskites. In article...
Article
Electrolytes compatible with lithium metal (Li) anode and cathode materials are regarded as one of the most crucial components toward the practical deployment of rechargeable lithium metal batteries (RLMBs). Herein, we report a highly salt-concentrated electrolyte (SCE) comprising lithium bis(fluorosulfonyl)imide (LiFSI) and 1,3-dioxolane (DOL)-bas...
Article
Solid polymer electrolytes (SPEs), comprising lithium fluorinated sulfonimide including Li[(FSO2)(RFSO2)N] (RF = n-CmF2m+1, m = 0 (LiFSI), 1 (LiFTFSI), 2 (LiFPFSI), and 4 (LiFNFSI)) and Li[(CF3SO2)2N] (LiTFSI) as conducting salt and poly(ethylene oxide) (PEO) as polymer matrix, are utilized for investigating the impact of anionic structure of lithi...
Article
Full-text available
We will present the results and supporting video files of several in operando techniques used to study lithium-ion and solid-state batteries, such as in situ scanning electron microscopy (SEM), in situ transmission electron microscopy (TEM), in situ Raman spectroscopy, in situ X-ray diffraction and in situ UV visible. These studies help understand...
Article
In parallel with the considerable investigations on renewable energy sources, electrical energy storage systems used to store the energy produced now and to provide it when needed have received much attention lately. ¹ Amongst them, lithium-ion batteries (LIB) are today the most employed in a huge range of purposes including cellphones, laptops or...
Article
Lithium ion capacitors (LICs) are foreseen to be a complementary alternative of vital importance to current energy storage issues, coupling high energy density delivered by batteries with high power/long cycle life offered by supercapacitors. The prime issues in realising this technology are pre-lithiation and replacement of graphite electrodes tha...
Article
The ion interactions in two novel ionic liquids containing the asymmetric sulfonimide anion, (difluoromethanesulfonyl)(trifluoromethanesulfonyl)imide (DFTFSI), are investigated using ¹H–¹⁹F Heteronuclear Overhauser Effect Spectroscopy (HOESY) nuclear magnetic resonance (NMR) in combination with relaxation measurements, and molecular dynamics (MD) s...
Article
Full-text available
The practical applications of lithium metal anodes in high-energy-density lithium metal batteries have been hindered by their formation and growth of lithium dendrites. Herein, we discover that certain protein could efficiently prevent and eliminate the growth of wispy lithium dendrites, leading to long cycle life and high Coulombic efficiency of l...
Article
In this paper, the ability to 3D print lithium-ion batteries through Pmnbspace thermoplastic material extrusion and polymer powder bed fusion is considered. Focused on the formulation of positive electrodes composed of polypropylene, LiFePO4 as active material, and conductive additives, advantages and drawbacks of both additive manufacturing techno...
Article
Rechargeable sodium–sulfur (Na–S) batteries are regarded as a promising energy storage technology due to their high energy density and low cost. High-temperature sodium–sulfur (HT Na–S) batteries with molten sodium and sulfur as cathode materials were proposed in 1966, and later successfully commercialised for utility-scale stationary energy storag...
Article
Among the various additive manufacturing processes, material extrusion techniques recently emerged as an encouraging option in order to 3D-print lithium-ion battery components. In this work, an overview of the recent advances and progress on the ink material extrusion, known as liquid deposition modeling (LDM), as well as the thermoplastic material...