P. López-Aranguren

P. López-Aranguren
CIC Energigune

PhD

About

29
Publications
5,225
Reads
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315
Citations
Additional affiliations
November 2018 - July 2019
CIC Energigune
Position
  • Research Associate
October 2009 - present
Materials Science Institute of Barcelona
Position
  • PhD

Publications

Publications (29)
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 development of a promising Li metal solid-state battery (SSB) is currently hindered by the instability of Li metal during electrodeposition; which is the main cause of dendrite growth and cell failure at elevated currents. The replacement of Li metal anode by spinel Li4Ti5O12 (LTO) in SSBs would avoid such problems, endowing the battery with it...
Patent
The invention relates to a method for forming a Li-ion battery cell comprising a cathode material, an anode material, a separator and an electrolyte, the electrolyte comprising a mixture of a polyethylene oxide and an oxide of formula LivLasZnOn, characterised in that it comprises the following successive cycling steps: (a) at least two successive...
Article
Full-text available
Using a new class of (BH4)- substituted argyrodite Li6PS5Z0.83(BH4)0.17, (Z = Cl, I) solid electrolyte, Li-metal solid-state batteries operating at room temperature have been developed. The cells were made by combining the modified argyrodite with an In-Li anode and two types of cathode: an oxide, Li x MO2 (M = ⅓ Ni, ⅓ Mn, ⅓ Co; so called NMC) and...
Preprint
Full-text available
Using a new class of (BH4)- substituted argyrodite Li6PS5Z0.83(BH4)0.17, (Z = Cl, I) solid electrolyte, Li-metal solid-state batteries operating at room temperature have been developed. The cells were made by combining the modified argyrodite with an In-Li anode and two types of cathode: an oxide, LixMO2 (M = 1/3Ni, 1/3Mn, 1/3Co; so called NMC) and...
Article
Solid State Batteries (SSBs) are the best candidates to overcome the safety and energy density drawbacks of conventional Li-ion. However, this technology is still relatively nascent in development and needs to offer competitive energy density so as to meet current demands of devices, especially those related to emerging electric vehicles. This work...
Patent
Full-text available
Un composé de formule Li7-xPS6-xXx-z(BH4)z dans lequel : X est choisi dans le groupe consistant en Cl, Br, I, F et CN 0 inf x=2 0 inf z=0,50. Ce composé peut être utilisé comme électrolyte solide d'un élément électrochimique lithium-ion.
Article
Aluminum oxide (Al2O3) is a well‐known electrolyte filler for stabilizing Li‐metal (Li°) anode in all‐solid‐state Liº‐based batteries. However, its strong interaction with lithium polysulfides (PS) hinders the direct application of Al2O3‐added electrolytes in all‐solid‐state lithium‐sulfur batteries (ASSLSBs). Herein, the role of Al2O3 in ASSLSBs b...
Article
This study reports on solid-state batteries operating at 120 °C prepared with metal hydride MH nanocomposites xMgH2+(1-x)TiH2 used as active materials for the positive electrode, metallic Li as the negative electrode and LiBH4 as the solid electrolyte. The molar content x of the MH nanocomposites ranged from 0.2 to 0.8. The electrochemical properti...
Article
A metal hydride is used for the first time as anode in a complete all-solid-state battery with sulfur as cathode and LiBH4 as solid electrolyte. The hydride is a nanocomposite made of MgH2 and TiH2 counterparts. The battery exhibits a high reversible capacity of 910 mAh g⁻¹ with discharge plateaus at 1.8 V and 1.4 V. Moreover, the capacity remains...
Article
Full-text available
The present work focuses on the development of a new eco-efficient chemical method for the polymerization of aziridine to hyperbranched polyethyleneimine (PEI) into mesoporous silica by using compressed CO2 as a solvent, reaction medium and catalyst. PEI was in situ grafted into MCM-41 and silica gel substrates, with pore diameters of 3.8 and 9.0 n...
Article
We present here the results of a combined experimental-molecular simulations approach concerning the capacity for CO2 adsorption of aminosilica hybrid products synthesized using supercritical fluids. Two porous supports were examined for amine functionalization, an ordered mesoporous silica (MCM-41) and a disordered silica gel (SG40). The textural...
Article
The overall objective of the present study was to modulate the surface characteristics of aerogel-like submicron and nanometric particles by coating them with polyethyleneimine (PEI) to suit specific biological applications. A new process for the covalent grafting of low-molecular weight PEI chains has been described, based on the use of compressed...
Article
The current work builds on previous works on grafting of organosilanes on mesoporous silica supports using a supercritical CO2 anhydrous method, and it extends them by examining the capacity of supercritically prepared aminosilica hybrid products for CO2 adsorption and its separation from mixtures with other gases. The CO2 adsorption capacity under...
Article
The present work focuses on the development of a new eco-efficient method, based on the use of compressed CO2 as a solvent, reaction medium and catalyst, for the in situ polymerization of ethyleneimine inside mesoporous silica.
Article
Calcium based CO2 solid sorbents reveal a different efficiency of the carbonation/calcination cycle according to their origin, natural or synthetic, and the synthesis method. The objective of this research was to develop high-performance sorbents for CO2 capture at high temperature by using a supercritical method to precipitate CaCO3 precursors. Tw...
Article
The present work examines the functionalization of silica supports via supercritical CO2 grafting of aminosilanes, which is an important step in the preparation of materials used as solid sorbents in CO2 capture. Four materials have been considered as solid supports: two commercially available silica gels (4.1 and 8.8 nm pore diameter), the mesopor...
Article
The internal surface of micro and nanoporous substrates can be modified in terms of charge, functionality or even reactivity or stability by means of bifunctional organic molecules able to self-assembly. This work investigates the impregnation with trialkoxysilanes of porous systems using supercritical carbon dioxide (scCO2) as a solvent, which com...
Conference Paper
Trialcoxysilanes are bifunctional molecules widely used to obtain self-assembled coatings by the chemisorption route in liquid solvents. However, problems arise when the method is used for porous materials due to cross-linking of alkylsilanes in solution, which lead to multilayer deposition, non-uniform surface coverage and pore blocking. We prop...
Conference Paper
In recent years social awareness and legal requirements have increased the concern about carbon dioxide capture, especially since the establishment of the reduction of their emission and the search for alternatives set by Kyoto's protocol and the IPCC reports. Traditionally industrial separation of CO2 is performed using aqueous amines. One of th...

Questions

Question (1)
Question
Hello,
I am trying to obtain the conductivity of a solid electrolyte by measuring EIS from a known area and thickness pellet.
I can not explain this weird values obtained on the impedance plots. Does anyone know what could it mean?
I would very much appreciate your help.
Thanks

Projects

Projects (2)
Archived project
Archived project
Novel Complex Metal Hydrides for Efficient and Compact Storage of Renewable Energy as Hydrogen and Electricity