A Diluted Electrolyte for Long-Life Sulfurized Polyacrylonitrile-Based Anode-Free Li-S Batteries
Ting Ma,
Xiuyun Ren,
Liang Hu,
Wanming Teng,
Xiaohu Wang,
Guanglei Wu,
Jun Liu,
Ding Nan,
Baohua Li,
Xiaoliang Yu
Affiliations
Ting Ma
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Xiuyun Ren
College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
Liang Hu
Department of Mechanical Engineering, Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hong Kong, China
Wanming Teng
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Xiaohu Wang
Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
Guanglei Wu
College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
Jun Liu
Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating, School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
Ding Nan
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Baohua Li
Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center, Tsinghua Shenzhen International Graduate School (SIGS), Shenzhen 518071, China
Xiaoliang Yu
Department of Mechanical Engineering, Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hong Kong, China
Lithium-metal batteries have attracted extensive research attention because of their high energy densities. Developing appropriate electrolytes compatible with lithium-metal anodes is of great significance to facilitate their practical application. Currently used electrolytes still face challenges of high production costs and unsatisfactory Coulombic efficiencies of lithium plating/stripping. In this research, we have developed a diluted electrolyte which is compatible with both lithium-metal anode and sulfurized polyacrylonitrile cathode. It presents a very high Li plating/stripping Coulombic efficiency of 99.3% over prolonged cycling, and the as-assembled anode-free Li-S battery maintains 71.5% of the initial specific capacity after 200 cycles at 0.1 A g−1. This work could shed light on designing a low-cost and high-performance liquid electrolyte for next-generation high-energy batteries.
