Synthesis and electrochemical investigation of novel phosphite based layered cathodes for Li-ion batteries

A. Shahul Hameed; M. V. Reddy; Nirjhar Sarkar; B. V.R. Chowdari; Jagadese J. Vittal

doi:10.1039/c5ra12410g

Synthesis and electrochemical investigation of novel phosphite based layered cathodes for Li-ion batteries

A. Shahul Hameed, M. V. Reddy, Nirjhar Sarkar, B. V.R. Chowdari, Jagadese J. Vittal

Research output: Contribution to journal › Article › peer-review

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Abstract

Li-ion batteries (LIBs) are considered to be the best available energy storage device in the market to power electric vehicles (EVs) and stationary energy storage in grids for the efficient utilization of renewable energy sources. In this work, a novel family of phosphite containing framework materials have been synthesized and investigated as cathode materials for Li-ion batteries. The oxalatophosphite frameworks, A₂[(VO)₂(HPO₃)₂(C₂O₄)]; A = Li, Na and K were prepared by hydrothermal treatment followed by dehydration. These cathodes possess a layered structure which can host the Li ions in the interlayer space. Electrochemical investigation of these materials using galvanostatic cycling, cyclic voltammetry and electrochemical impedance spectroscopy reveal highly reversible Li intercalation at ∼3.8 V. Improved capacity was observed for the graphene composite compared to the pristine sample.

Original language	English
Pages (from-to)	60630-60637
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	74
DOIs	https://doi.org/10.1039/c5ra12410g
State	Published - 2015
Externally published	Yes

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abstract = "Li-ion batteries (LIBs) are considered to be the best available energy storage device in the market to power electric vehicles (EVs) and stationary energy storage in grids for the efficient utilization of renewable energy sources. In this work, a novel family of phosphite containing framework materials have been synthesized and investigated as cathode materials for Li-ion batteries. The oxalatophosphite frameworks, A2[(VO)2(HPO3)2(C2O4)]; A = Li, Na and K were prepared by hydrothermal treatment followed by dehydration. These cathodes possess a layered structure which can host the Li ions in the interlayer space. Electrochemical investigation of these materials using galvanostatic cycling, cyclic voltammetry and electrochemical impedance spectroscopy reveal highly reversible Li intercalation at ∼3.8 V. Improved capacity was observed for the graphene composite compared to the pristine sample.",

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AU - Hameed, A. Shahul

AU - Reddy, M. V.

AU - Sarkar, Nirjhar

AU - Chowdari, B. V.R.

AU - Vittal, Jagadese J.

PY - 2015

Y1 - 2015

N2 - Li-ion batteries (LIBs) are considered to be the best available energy storage device in the market to power electric vehicles (EVs) and stationary energy storage in grids for the efficient utilization of renewable energy sources. In this work, a novel family of phosphite containing framework materials have been synthesized and investigated as cathode materials for Li-ion batteries. The oxalatophosphite frameworks, A2[(VO)2(HPO3)2(C2O4)]; A = Li, Na and K were prepared by hydrothermal treatment followed by dehydration. These cathodes possess a layered structure which can host the Li ions in the interlayer space. Electrochemical investigation of these materials using galvanostatic cycling, cyclic voltammetry and electrochemical impedance spectroscopy reveal highly reversible Li intercalation at ∼3.8 V. Improved capacity was observed for the graphene composite compared to the pristine sample.

AB - Li-ion batteries (LIBs) are considered to be the best available energy storage device in the market to power electric vehicles (EVs) and stationary energy storage in grids for the efficient utilization of renewable energy sources. In this work, a novel family of phosphite containing framework materials have been synthesized and investigated as cathode materials for Li-ion batteries. The oxalatophosphite frameworks, A2[(VO)2(HPO3)2(C2O4)]; A = Li, Na and K were prepared by hydrothermal treatment followed by dehydration. These cathodes possess a layered structure which can host the Li ions in the interlayer space. Electrochemical investigation of these materials using galvanostatic cycling, cyclic voltammetry and electrochemical impedance spectroscopy reveal highly reversible Li intercalation at ∼3.8 V. Improved capacity was observed for the graphene composite compared to the pristine sample.

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Synthesis and electrochemical investigation of novel phosphite based layered cathodes for Li-ion batteries

Abstract

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