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Investigation of NbTe4 as a potential anode material for Li-ion batteries
Rich, David Hossain, Md Zawad
Rich, David
Hossain, Md Zawad
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2026-04-24
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Rich, David; Hossain, Md Zawad; Wang, Jian. 2026. Investigation of NbTe4 as a potential anode material for Li-ion batteries. -- In Proceedings: 25th Annual Undergraduate Research and Creative Activity Forum. Wichita, KS: Wichita State University.
Abstract
Currently, the size, capacity, and charging performance of lithium-ion batteries is limited by the use of graphite as the anode material. Research and development of alternative materials is necessary for significant advancements to be made to lithium-ion battery performance. Much of the previous research on alternative anode materials has focused on transition metal sulfides and selenides while the tellurides have remained comparatively underexplored. In this work NbTe4 was synthesized via a two-step solid-state method with its composition and structure determined by a combination of powder and single-crystal x-ray diffraction. The structure of NbTe4 has previously been reported as consisting of 1D chains of Nb atoms centered within antiprisms formed by square [Te4] units. This work presents an alternative representation with the structure consisting of a 3D network of Nb atoms interconnected by [Te2] dimers. Following the structural analysis the electrochemical performance of NbTe4 as a Li-ion battery anode material was evaluated. This was done by the creation of coin cells based on a standard CR 2032 coin cell with NbTe4 used in place of the standard anode. The cells were then subjected to repeated charge and discharge cycles with cyclic voltammetry data being collected throughout each cycle. The first cycle discharge capacity of NbTe4 was found to be 407 mAh/g, this capacity decreases rapidly with further cycling, reaching ~125 mAh/g by the fifth cycle. This rapid decrease in capacity was attributed to a combination of irreversible conversion reactions occurring, resulting in a breakdown of the NbTe4, and formation of the solid electrolyte interface. While these results indicate that NbTe4 is not an improvement over graphite, the first cycle capacity is promising and suggests that transition metal tellurides are deserving of further exploration for use as anode materials in Liion batteries.
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Presented to the 25th Undergraduate Research and Creative Activity Forum (URCAF) held in Woolsey Hall, Wichita State University, April 24, 2026.
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Wichita State University
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URCAF;v.25