Zn3P2 has been studied as an anode material for lithium-ion batteries. Electrochemical studies demonstrate that the initial discharge and charge capacities are 1056 and 710 mAh g-1, respectively. The discharge-charge reaction mechanism of lithium with Zn 3P2 is analyzed by ex situ X-ray diffraction. On initial discharge, LiZn alloy is formed in a matrix of Li3P. Upon charge, LiZn alloy is transformed completely into Zn metal and Li3P is converted partially to P, which reacts with Zn to form the original Zn 3P2 phase. The reversible capacity of Zn3P 2 is improved when cycled in the limited voltage window. © 2005 Elsevier B.V. All rights reserved.

Upadhyayula V Varadaraju

Department Of Chemistry

Anodes

Electrochemistry

Lithium alloys

Lithium batteries

Phosphorus

stoichiometry

Synthesis (chemical)

X ray diffraction

Lithium-ion batteries

Phase formation

SPECIFIC CAPACITY

ZN3P2

Zinc compounds

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Journal of Power Sources

The phosphides InP and GaP with a zinc blende structure are examined as anode materials for lithium-ion batteries. During discharge, X-ray diffraction phase analysis reveals the formation of Li-In/Li-Ga alloy and amorphous Li3P. On charge, lithium is extracted from both LixM (M = In, Ga) alloy and Li3P. InP shows a reversible capacity of ∼475 mAh g-1 in the voltage range between 0.2 and 1.5 V, whereas GaP exhibits poor capacity retention compared with that of InP. © 2005 Elsevier B.V. All rights reserved.

Phosphides with zinc blende structure as anodes for lithium-ion batteries

As an approach to investigate upon the electrochemical property of Zn as a possible lithium battery anode material, an ever first attempt to explore two types of Zn based alloy anodes, viz., Zn0.9Ni0.075In0.025 (nickel rich) and Zn0.9Ni0.025In0.075 (indium rich) was made. Citric acid assisted modified sol-gel method [CAM sol-gel] has been adopted to synthesize the anode materials at 500 °C and characterized further by XRD and SEM for phase purity and preferred surface morphology, respectively. An average crystallite size of 800 nm-1.2 μm has been calculated from the PXRD pattern and the compounds were found to exist in the cubic phase. A discharge capacity of 936 and 1155 mAh/g were exhibited by Zn0.9Ni0.075In0.025 and Zn0.9Ni0.025In0.075 anodes respectively, with an excellent capacity retention (&gt;85%) and enhanced coulombic efficiency (95-98%). It is further understood that the Zn0.9Ni0.025In0.075 anode with increased In content has exhibited promising electrochemical property with a steady state reversible capacity of ∼490 mAh/g even after 25 cycles, compared to the corresponding nickel rich counterpart, viz., Zn0.9Ni0.075In0.025. © 2006 Elsevier Ltd. All rights reserved.

Electrochimica Acta

A novel approach to explore Zn based anodes for lithium-ion battery applications

The LixMPn4 phases (M/Pn = Ti/P, V/As): new negative electrode materials for lithium ion rechargeable batteries

Electrochemistry Communications

Air stable copper phosphide (Cu3P): a possible negative electrode material for lithium batteries

Electrochemical and Solid-State Letters

Facile Reversible Displacement Reaction of Cu[sub 3]P with Lithium at Low Potential

Chemistry of Materials

Crystal Structure and Electrochemical Behavior of Li2CuP: a Surprising Reversible Crystalline−Amorphous Transformation

Electrochemical reactions of lithium with CuP2 and Li1.75Cu1.25P2 synthesized by ballmilling

Electrochemical reaction of lithium with Zn3P2

Journal	Journal of Power Sources
ISSN	03787753
Open Access	No