Boosting the Initial Coulombic Efficiency of Bi2s3-Based Anode for Practical Sodium-Ion Batteries

34 Pages Posted: 22 Feb 2025

See all articles by Lankun Shi

Lankun Shi

Inner Mongolia University of Science and Technology

Rongji Jiao

Inner Mongolia University of Science and Technology

Dawei Lan

Inner Mongolia University of Science and Technology

Li Wang

Inner Mongolia University of Science and Technology

Yu Gao

Inner Mongolia University of Science and Technology

Meng-Fang Lin

Ming Chi University of Technology

Zhongmin Lang

Ordos Institute of Technology

Wenxiu He

Inner Mongolia University of Science and Technology

Guixiao Jia

Inner Mongolia University of Science and Technology

Jinglong Cui

Inner Mongolia University of Science and Technology

Shaohui Li

Zhengzhou University

Abstract

Bi2S3 is a promising anode candidate for sodium-ion batteries (SIBs) due to its high capacity and cost-effectiveness. However, the severe volume expansion that occurs during sodiation/desodiation process results in inferior cycling stability and low initial Coulombic efficiency (ICE), which hinders its further development. Herein, we deposited Bi2S3 nanorods onto lignite-derived carbon skeleton (Bi2S3/LC) via a solvothermal method for high performance anode. Experimental studies combined with theoretical calculation reveal that the presence of LC can enhance the porosity and sulfur vacancies of Bi2S3, boost the adsorption ability and reversibility of its sodiation intermediate NaBiS2 for Na+. Additionally, incorporating fluoroethylene carbonate (FEC) into the ester-based electrolyte enables the in-situ formation of a conformal and ultra-thin NaF-rich solid electrolyte interphase (SEI) on the anode surface and improves its structural stability. These advancements endow Bi2S3/LC anode displays an excellent ICE (up to 93.2% at 0.1 A g-1), rapid sodium storage capability (388.8 mAh g-1 at 8 A g-1), and impressive cycle stability (up to 96.3% capacity retention after 1000 cycles at 10 A g-1). The exceptional Na+ storage capability of Bi2S3/LC anode also enables the assemable SIB full cell to demonstrate impressive rate capability and cycling stability, underscoring their potential for high-performance practical applications.

Keywords: Initial Coulomb efficiency, Nanorod-like Bi2S3, sodium-ion batteries, Anode

Suggested Citation

Shi, Lankun and Jiao, Rongji and Lan, Dawei and Wang, Li and Gao, Yu and Lin, Meng-Fang and Lang, Zhongmin and He, Wenxiu and Jia, Guixiao and Cui, Jinglong and Li, Shaohui, Boosting the Initial Coulombic Efficiency of Bi2s3-Based Anode for Practical Sodium-Ion Batteries. Available at SSRN: https://ssrn.com/abstract=5149060 or http://dx.doi.org/10.2139/ssrn.5149060

Lankun Shi

Inner Mongolia University of Science and Technology ( email )

China

Rongji Jiao

Inner Mongolia University of Science and Technology ( email )

China

Dawei Lan

Inner Mongolia University of Science and Technology ( email )

China

Li Wang

Inner Mongolia University of Science and Technology ( email )

China

Yu Gao

Inner Mongolia University of Science and Technology ( email )

China

Meng-Fang Lin

Ming Chi University of Technology ( email )

New Taipei City, 243
Taiwan

Zhongmin Lang

Ordos Institute of Technology ( email )

China

Wenxiu He

Inner Mongolia University of Science and Technology ( email )

China

Guixiao Jia

Inner Mongolia University of Science and Technology ( email )

China

Jinglong Cui

Inner Mongolia University of Science and Technology ( email )

China

Shaohui Li (Contact Author)

Zhengzhou University ( email )

100 Science Avenue
Zhengzhou, CO 450001
China

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