Corn-silk-based biomass porous carbon as a sulfur host for promising lithium-sulfur batteries

Shenglong Yi; Deyu Mao; Chun Ye; Wanying Yang; Qiancheng Zhu

doi:10.1117/12.2684552

24 October 2023 Corn-silk-based biomass porous carbon as a sulfur host for promising lithium-sulfur batteries

Shenglong Yi, Deyu Mao, Chun Ye, Wanying Yang, Qiancheng Zhu

Proceedings Volume 12804, Second International Conference on Sustainable Technology and Management (ICSTM 2023); 1280402 (2023) https://doi.org/10.1117/12.2684552
Event: 2nd International Conference on Sustainable Technology and Management (ICSTM2023), 2023, Dongguan, China

Abstract

The effect of shuttle in lithium-sulfur (Li-S) batteries is a serious impediment to battery properties and commercialization. In this paper, biomass porous carbon materials were obtained via a one-step pyrolysis approach, and the overall carbon material structure was modified by controlling mass proportion of activator to carbon precursor. Physical and electrochemical analysis and testing techniques showed that the biomass porous carbon with a mass ratio of 1.5 showed the best advantage in inhibiting the shuttle effect and optimizing the cell behavior. The pore rich structure and the highest degree of graphitization not only provide strong adsorption storage capacity for controlling the polysulfide shuttle effect, but also provide fast channels to fast transfer in Li-ion and electron. Therefore, the prepared Li-S battery has shown an effective initial discharge of 1118.1 mAh g^-1 specific capacity at 0.1 C with a minimum decay rate of 0.065% of capacity at 1 C per cycle. This work shows the potential application of biomass porous carbon materials for Li-S batteries.

Citation Download Citation

Shenglong Yi, Deyu Mao, Chun Ye, Wanying Yang, and Qiancheng Zhu "Corn-silk-based biomass porous carbon as a sulfur host for promising lithium-sulfur batteries", Proc. SPIE 12804, Second International Conference on Sustainable Technology and Management (ICSTM 2023), 1280402 (24 October 2023); https://doi.org/10.1117/12.2684552

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