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Highly durable and sustainable copper-iron-tin-sulphide (Cu2FeSnS4) anode for Li-ion battery: Effect of operating temperatures

Inamdar, Akbar I., Salunke, Amol S., Hou, Bo ORCID:, Shrestha, Nabeen K., Im, Hyunsik and Kim, Hyungsang 2023. Highly durable and sustainable copper-iron-tin-sulphide (Cu2FeSnS4) anode for Li-ion battery: Effect of operating temperatures. Dalton Transactions 52 (34) , pp. 12020-12029. 10.1039/D3DT01338C
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Operating temperatures considerably influence the energy storage mechanism of the anode of Li-ion batteries (LiBs). This effect must be comprehensively studied to facilitate the effective integration of LiBs in practical applications and battery management. In this study, we fabricated a novel anode material, i.e., copper iron tin sulphide (Cu2FeSnS4, CFTS) and investigated the corresponding LiB performance at operating temperatures from 10 C to 55 C. The CFTS anode exhibited a discharge capacity of 283.1 mAhg1 at room temperature (25 C), which stabilized to 174.0 mAhg1 in repeated cycles tested at a current density of 0.1 Ag−1. The discharge capacity at higher operating temperatures such as 40 C and 55 C, is found to be 209.3 and 230.0 mAhg respectively. In contrast, the discharge capacity decreased to 36.2 mAhg1 when the temperature decreased to 10 C. Electrothermal impedance spectroscopy was performed to determine the rate of chemical reactions, mobility of active species, and change in internal resistance at different operating temperatures. In terms of the cycle life, the CFTS exhibited outstanding cycling stability for more than 500 charge/discharge cycles, with a 146 % capacity retention and more than 80% Coulombic efficiency. The electrochemical investigation revealed that the charge storage in the CFTS anode is attributable to capacitive-type and diffusion-controlled mechanisms.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Royal Society of Chemistry
ISSN: 1477-9226
Date of First Compliant Deposit: 10 August 2023
Date of Acceptance: 1 August 2023
Last Modified: 10 Nov 2023 04:58

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