M V Reddy

M V Reddy
Hydro-Québec · Institute of Research Hydro-Québec, Centre of Excellence in Transportation Electrification and Energy Storage (CETEES)

Doctor of Philosophy

About

77
Publications
16,049
Reads
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1,703
Citations
Citations since 2016
49 Research Items
1394 Citations
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
Introduction
cathode , anode and electrolytes materials for Lithium Batteries
Additional affiliations
June 2019 - present
Hydro-Québec
Position
  • Senior Researcher
September 2011 - December 2012
National University of Singapore
Position
  • Senior Researcher
December 2010 - April 2019
National University of Singapore
Position
  • Fellow
Education
November 1999 - March 2003
Université Bordeaux 1
Field of study
  • Materials Science

Publications

Publications (77)
Chapter
Full-text available
Definition To give wide new insight with multitasking impacts particularly in changing the structures of natural garbage materials as perpetual voltage control with flexible thin battery from green garbage materials. Such new type of flexible thin battery with voltage control can be attained by incorporating it with surrounding wind energy that flo...
Conference Paper
Full-text available
This paper reports the hydrothermal synthesis of alloy anode materials (V1/2Sb1/2Sn)O4 and (Fe1/2Sb1/2Sn)O4 and determine the effect of heat treatment on reversible capacities of the two oxides, and evaluation of their electrochemical properties. The compounds were initially prepared using the hydrothermal method at 180°C, and part of the active ma...
Article
Highly crystalline few-layered graphene (hcFLG) is synthesized using microwave exfoliation of in-house prepared graphene oxide. When hcFLG is tested as an anode material in a Li-ion coin cell, it showed unique lithiation electrochemistry. Cyclic voltammetry (CV), structural and electrochemical impedance spectroscopic analyses of hcFLG showed enhanc...
Article
Full-text available
In this work, we report a sol-gel synthesis-based Zn-doped Na0.6Fe0.5Mn0.5O2 (NFM) cathode and understand the effect of Zn doping on the crystal structure and electrochemical performances such as discharge capacity and rate capability. Detailed X-Ray diffraction (XRD) pattern analysis indicated a decrease in the Na-layer thickness with Zn doping. S...
Article
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The role of the carbon-based two-dimensional (2D) structures such as graphene or graphene oxide on the properties of metal oxide/2D composites materials are extensively studied for the environmental applications like photocatalysis. However, the metal oxide/inorganic 2D structure-based composites are less explored. In this regard, we have explored...
Article
Porous Na3V2(PO4)3/C composites were prepared in situ via a simple solution method using various amounts of cetyltrimethylammonium bromide and glycine mixtures. Platelet particles with a thickness of ~150 nm were formed when 0.4 mmol cetyltrimethylammonium bromide and 0.4 mmol glycine were used, resulting in a high specific surface area (16 m² g⁻¹)...
Article
Layer structured Li 1.10 (Ni 0.32 X 0.01 Co 0.33 Mn 0.33)O 2 (X = Dy/Gd/Ho) compounds were synthesized via the microwave assisted solvothermal route. The impacts of doping on the electrical and electrochemical properties of Li 1.10 (Ni 0.32 X 0.01 Co 0.33 Mn 0.33)O 2 compounds were investigated. Rietveld refined XRD pattern showed Li 1.10 (Ni 0.32...
Article
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The iron oxide powder was prepared using the surfactant Pluronic P123 with either iron nitrate (N series) or iron chloride (C series) as the raw material for iron source, under different pH conditions. The crystal phase, particle size, surface charge, and morphology of the iron oxide materials prepared by hydrothermal route were found to be highly...
Article
Full-text available
In this study, Li3V2(PO4)3 (LVP) powders are prepared by a solution synthesis method. The effects of two reducing agents on crystal structure and morphology and electrochemical properties are investigated. Preliminary studies on reducing agents such as oxalic acid and citric acid, are used to reduce the vanadium (V) precursor. The oxalic acid-assis...
Article
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Energy storage materials are finding increasing applications in our daily lives, for devices such as mobile phones and electric vehicles. Current commercial batteries use flammable liquid electrolytes, which are unsafe, toxic, and environmentally unfriendly with low chemical stability. Recently, solid electrolytes have been extensively studied as a...
Article
In this article, we report simple and scalable one-pot molten salt synthesis of CoFe2O4 as electrode material for Lithium ion batteries. X-ray diffraction studies along with Rietveld analysis showed a pure phase of CoFe2O4 with space group Fd-3m and crystallite size of 54 nm. As an anode material CoFe2O4 showed high initial discharge/charge capacit...
Article
Full-text available
Oxygen evolution reaction (OER) supported by electrocatalyst is very important reaction in electrochemical system e.g. air-battery based energy storage devices, water splitting, and photo electrochemical cells. Therefore developing inexpensive, non-hazardous, noble metal free, transition metal oxide based electrocatalyst is necessary for energy app...
Article
Full-text available
Lithium batteries are electrochemical devices that are widely used as power sources. This history of their development focuses on the original development of lithium-ion batteries. In particular, we highlight the contributions of Professor Michel Armand related to the electrodes and electrolytes for lithium-ion batteries.
Article
Na3V2(PO4)3 (NVP) powders were prepared by solution synthesis method using cetyltrimethylammonium bromide (CTAB) as additive. The structural, microstructure and electrochemical performances of NVP powders were characterized as a function of CTAB amounts. The porous carbon-coated particles were formed by burning of CTAB during calcination at 850 °C....
Article
High density charge (energy) storage under supercapacitive mode requires an electrode which would deliver larger space for charge accumulation and offer larger electrochemical potential difference at an electrode–electrolyte interface. Porous carbon has been a preferred electrode for commercial supercapacitors; however, the charge storability is mu...
Article
In an effort to minimize the usage of non-renewable materials and to enhance the functionality of the renewable materials, we have developed thin metal oxide coated porous carbon derived from a highly abundant non-edible bio resource, i.e., palm kernel shell, using a one-step activation-coating procedure and demonstrated their superiority as a supe...
Article
The competition among scientists in providing the best need of mobile energy in society has been spread worldwide. This short communication shares a newly simple invention about thin battery with its voltage control simply adjusted by bending it. The changing in battery voltage is quite fast only in few seconds and very sensitive according to the m...
Article
Nanocrystalline lithium lanthanum titanate (LLTO)-lithium iron phosphate (LFP/C) layered pellets have been prepared to analyze its interface for all solid-state batteries. The conductivity of the samples as a function of temperatures was analyzed and reported. The total conductivity of the sample at room temperature is in the order of 10 −5 S cm −1...
Article
In this article, we investigated the role of potassium and Lithium hydroxide (KOH & LiOH) as precipitating agents on the physiochemical properties and electrochemical performance of MgCo2O4. Uniform cubic particles were obtained using lithium hydroxide. When LiOH was used as precipitating agents, discrete nanoparticles with uniform particle size we...
Article
In the present work, the role of the nonionic polymeric surfactant, pluronic P123 on the formation of porous iron oxide dendrite structures are explored. The iron oxide samples were prepared at different hydrothermal treatment time of 6, 12, 24 and 48 h using potassium ferricyanide as the raw material in presence and in absence of surfactant. The s...
Article
Full-text available
A brief conceptual challenges improvement (hotumese) and development of nanobattery is explained in a wide insight of intuition idea and technology planning for a better future human kind life particularly in their needs of mobile effective energy. conceptual Nanobattery with the size and its fantastic structures of about 1000 times smaller than th...
Article
Full-text available
A brief conceptual challenges improvement (hotumese) and development of nanobattery is explained in a wide insight of intuition idea and technology planning for a better future human kind life particularly in their needs of mobile effective energy.
Article
In this article, we have reported a one-step scalable synthesis of MgCo 2 O 4 nanostructures as efficient anode material for Li-ion batteries and investigated the role of post-synthesis calcination temperature (400, 600 and 800 °C)on its physiochemical properties and electrochemical performances. The XRD pattern of the calcinated sample at 400 °C (...
Article
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Metallic or ceramic micro/nanoporous materials have attracted particular attention due to some interesting structural and functional properties. There exist a variety of methods for producing porous materials by which optimized features can be reached. Spark plasma sintering (SPS) is one of these new-emerging approaches. This technique is often com...
Article
We report a simple and scalable synthesis of MnCo 2 O 4 /MWCNT nanocomposite by a simple precipitation method and its application as a high capacity anode material for Li-ion batteries. X-ray diffraction analysis showed a pure phase of MnCo 2 O 4 and morphological analysis revealed a uniform decoration of MnCo 2 O 4 nanoparticles along MWCNT backbo...
Article
Full-text available
A series of olivine-structured of LiNi1 − x(Co0.5Mn0.5)x PO4 (0 ≤ x ≤ 1) compositions have been synthesized by two-step conventional solid-state method at high temperature of 1000 °C followed by slow cooling or quenching. The XRD patterns of the obtained samples confirmed the formation of LiNi1 − x(Co0.5Mn0.5)x PO4 (0 ≤ x ≤ 1) phase with orthorhomb...
Article
Optimization of electrodes for charge storage with appropriate processing conditions places significant challenges in the developments for high performance charge storage devices. In this article, metal cobaltite spinels of formula MCo2O4 (where M=Mn, Zn, Fe, Ni and Co) are synthesized by oxalate decomposition method followed by calcination at thre...
Article
In this communication, we demonstrate the electrochemical activity of AVP2O7/C (A= Li, Li0.5Na0.5 and Na) prepared by a scalable and an easy-to-adopt oxalic dihydrazide (ODH) assisted solution combustion method for application in sodium-ion batteries (SIBs). Series of compounds thus prepared are found to possess monoclinic structure consisting of 3...
Article
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Carbon-encapsulated LiFePO4 (LFP) nanochains were prepared as a cathode material for lithium batteries by sol–gel method using citric acid as the carbon source. The prepared LFP/C material is characterized by structural, morphological, and electrochemical characterization. LFP/C shows an orthorhombic olivine structure with “Pnma” space group having...
Article
Full-text available
Pristine trivanadate (LiV3O8) and doped lithium trivanadate (LiV3-x M x O8, M = Zn/Co/Fe/Sn/Ti/Zr/Nb/Mo, x = 0.01/0.05/0.1 M) compounds were prepared by a simple reflux method in the presence of the polymer, Pluronic P123, as the chelating agent. For comparison, pristine LiV3O8 alone was also prepared in the absence of the chelating agent. The Rie...
Article
Full-text available
In this project, we synthesized TiO2 compounds through the molten salt method (MSM) using Ti(IV) oxysulfate, as the Ti source. Molten salts in the ratio of 0.375 M LiNO3:0.180 M NaNO3:0.445 M KNO3 were added and heated at temperatures of 145, 280, 380, and 480 °C for 2 h in air, respectively. A part of the sample prepared at 145 °C was further rehe...
Article
This article reports synthesis of cuprous oxide (Cu2O) and cupric oxide (CuO) nanowires by controlling calcination environment of electrospun polymeric nanofibers and their charge storage properties. The Cu2O nanowires showed higher surface area (86 m2 g-1) and pore size than the CuO nanowires (36 m2 g-1). Electrochemical analysis was carried out i...
Article
Full-text available
Layered structured LiNi0.5Mn0.5O2 and LiNi0.495M0.01Mn0.495O2 (M = Zn, Co, and Y) compounds were prepared by PVP (poly(vinyl pyrrolidone))-assisted sol-gel method, and their structural, morphological, vibrational, transport, and electrochemical properties were characterized by XRD, SEM, FTIR, Raman, AC impedance, and galvanostatic charge and discha...
Article
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We report the synthesis of MCo2O4 (M=Co, Ni) on Ni-mesh by a simple metal acetate decomposition method. Stability tests of the samples in aqueous acidified LiCl, LiOH and LiTFSI in H2O/DME showed that Co3O4/Ni and Co3O4-PVP/Ni are relatively stable in alkaline and neutral environments, with Co3O4/Ni being relatively more stable. For NiCo2O4/Ni and...
Article
Full-text available
The limited electrochemical stability and the flammability of the liquid electrolytes presently used in Li-ion batteries stimulates the search for alternatives including ceramic solid electrolytes. Moreover, solid electrolytes also fulfil crucial functions in various large-scale energy storage systems, e.g. as anode-protecting membranes in aqueous...
Article
Sub-micron phase N-Fe2O3 powders were synthesized by doping Mg, Cu and Zn, whilst varying the concentrations of Mg and Zn. We chose to prepare the compounds by the molten salt method: a simple and cost effective method that yields crystalline, chemically purified and single-phase powders under low temperatures. The N-Fe2O3 powders were characterise...
Article
Full-text available
A new pseudocapacitive combination, viz. CoO-MnO2-MnCo2O4 hybrid nanowires (HNWs) is synthesized using a facile single step hydrothermal process and its properties are benchmarked with conventional battery-type flower shaped MnCo2O4 obtained by similar processing. The HNWs showed high electrical conductivity and specific capacitance (Cs) (1650 F g-...
Article
The metal sulfides known as being analogous to metal oxides have emerged as a new class of materials for energy conversion and/or storage applications due to their low cost and high electrochemical activity. They have shown fascinating properties such as excellent redox reversibility, conductivity and capacitance. Further, binary metal sulfides hav...
Article
Unique reduced graphene oxide named solar reduced graphene oxide (SRGO) was found to be an excellent anode material in Li ion battery. SRGO exhibited first cycle discharge- and charge-capacities as high as 1480 and 880 mAh g-1, respectively. Moreover, the columbic efficiency was found to be >95% and the specific capacity retention even after 60 cyc...
Article
Full-text available
The Li0.5La0.5TiO3 and LiFePO4/C has been prepared using sol-gel method for its interface analysis towards its application for all solid state assembly. The LiFePO4cathode material and Li0.5La0.5TiO3 solid electrolyte has been individually tested for its electrochemical reversibility. The thin film battery assembly shows severe capacity fading, whi...
Article
In this paper, we show that magnesium and cobalt doped SnO2 (Mg-SnO2 and Co-SnO2) nanostructures have profound influence on the discharge capacity and coulombic efficiency of lithium ion batteries (LIBs) employing pure SnO2 and zinc doped SnO2 (Zn-SnO2) as benchmark materials. The materials were synthesized via sol-gel technique. The structural, ch...
Article
This paper reports the synthesis of continuous nanobelts, whose thickness is less than half of its pore diameter, of a material hybrid composing of nanograins of nickel oxide and cobalt oxide by electrospinning technique and their capacitive charge storage properties. While the constituent binary metal oxides (NiO and Co3O4) formed solid cylindrica...
Article
The influence of the Samarium ions (Sm³⁺) on the electrochemical properties TiO2 nanoparticles has been analyzed by incorporating Sm ions in two different combinations using the sol-gel method. The bare and doped samples have been characterized using XRD, SEM, TEM and EDX, for its structural, morphological and compositional analysis of the sample....
Article
P2-type Na0.67Mg0.28Mn0.72O2 based cathode materials for sodium-ion batteries were prepared using combustion synthesis. The effect of microwave irradiation and fluorination was investigated with the aim to improve the electrochemical performance. Four samples were considered: samples were prepared by the combustion method (NaMgMnO-a) and then eithe...
Article
Fourteen pigeonpea [Cajanus cajan (L.) Millsp.] genotypes were evaluated in a perennial trial for 3 years in a fusarium wilt- and sterility-mosaic disease-screening nursery on a Vertisol, to identify genotypes having resistance to both the diseases. Nine genotypes were found resistant to wilt in the first season, out of which 5 ('ICP 8094', 'ICP 88...
Article
The pigeon pea (Cajanus cajan) germplasm line ICP9145 (PI583777), which is resistant to fusarium wilt (Fusarium udum), was released by ICRISAT in 1993, and released for general cultivation in Malawi in 1987 where the local farmers named it Nandola Wa Nsawawa. It is the first wilt-resistant pigeon pea cultivar released in Africa and is currently est...
Article
Quarante-sept cultivars de pois chiche ont été testés pour leur résistance ou leur tolérance envers #Meloidogyne javanica$ en notant leur croissance dans des sols infestés et des sols sans nématodes. En se fondant sur le nombre de galles, la taille de celles-ci, la surface des racines occupée par les galles et le nombre de masses d'oeufs produites,...
Article
Phytophthora blight caused by Phytophthora drechsleri f. sp. cajani is a major production constraint to pigeonpea in India. The disease has also been reported from other countries. It was first reported in 1966 from India and is currently considered to be more important in short‐duration pigeonpeas than in traditional medium‐ and long‐duration type...
Article
Glasshouse and field trials were conducted to determine the effects of the cyst nematode, Heterodera cajani on biomass and grain yield of pigeon pea, Cajanus cajan. Shoot length, fresh and dry shoot masses, leaf area and pod yields of pigeon pea were significantly reduced by H. cajani. In glasshouse pot experiments, an initial density of 1.0 juveni...