Bis(phenylsulfonyl)methane (BPSM) as Multifunctional Electrolyte Additive Constructing a Stable Interfaces for LiNi0.8Co0.1Mn0.1O2/graphite batteries at Low Temperatures

Haijia Li; Shihui Chen; Xiang Gao; Xin He; Weizhen Fan; Chaojun Fan; Mingli Lu; Zhen Ma; Junmin Nan

doi:10.1002/chem.202501749

Bis(phenylsulfonyl)methane (BPSM) as Multifunctional Electrolyte Additive Constructing a Stable Interfaces for LiNi0.8Co0.1Mn0.1O2/graphite batteries at Low Temperatures

Chemistry. 2025 Jun 28:e202501749. doi: 10.1002/chem.202501749. Online ahead of print.

Authors

Haijia Li¹, Shihui Chen¹, Xiang Gao¹, Xin He¹, Weizhen Fan¹, Chaojun Fan², Mingli Lu³, Zhen Ma¹, Junmin Nan⁴

Affiliations

¹ South China Normal University, School of Chemistry, CHINA.
² Guangzhou Tinci Materials Technology Co., Ltd., Research Institute, CHINA.
³ Foshan University, School of Environmental and Chemical Engineering, CHINA.
⁴ South China Normal University - Guangzhou Higher Education Mega Center Campus, School of Chemistry, College Town, 510006, Guangzhou, CHINA.

PMID: 40580180
DOI: 10.1002/chem.202501749

Abstract

Bis(phenylsulfonyl)methane (BPSM) is used as a functional electrolyte additive to assist in the construction of stable electrode/electrolyte interfacial films to improve the performance of LiNi0.8Co0.1Mn0.1O2/graphite batteries at room and low temperatures. And compared to the non-BPSM-containing batteries, rate and cycling performance of BPSM-containing batteries can also be enhanced. After 1200 cycles at 25 °C, the capacity retention of the battery with BPSM increases from 8.68% to 83.07%. After 130 cycles at -10 °C, the capacity retention of the battery with BPSM increases from 21.01% to 98.97%. The spectroscopic characterizations and theoretical calculations demonstrate that BPSM is preferentially oxidized and reduced on the cathode and anode respectively to construct stable and high-conductivity electrode-electrolyte interphase. The enhanced performance reveals that BPSM is an effective film-forming additive with promising applications in nickel-rich lithium-ion batteries.

Keywords: Bis(phenylsulfonyl)methane; LiNi0.8Co0.1Mn0.1O2/graphite battery; Lithium-ion battery; electrolyte additive; temperature performance.