Yang Tian, Xia Jun, Piao Zhihong, Yang Lin, Zhang Shichao, Xing Yalan, Zhou Guangmin
School of Materials Science and Engineering, Beihang University, Beijing 100191, People's Republic of China.
Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China.
ACS Nano. 2021 Sep 28;15(9):13901-13923. doi: 10.1021/acsnano.1c03183. Epub 2021 Sep 13.
The increasing demand for wearable electronic devices necessitates flexible batteries with high stability and desirable energy density. Flexible lithium-sulfur batteries (FLSBs) have been increasingly studied due to their high theoretical energy density through the multielectron chemistry of low-cost sulfur. However, the implementation of FLSBs is challenged by several obstacles, including their low practical energy density, short life, and poor flexibility. Various graphene-based materials have been applied to address these issues. Graphene, with good conductivity and flexibility, exhibits synergistic effects with other active/catalytic/flexible materials to form multifunctional graphene-based materials, which play a pivotal role in FLSBs. This review summarizes the recent progress of graphene-based materials that have been used as various FLSB components, including cathodes, interlayers, and anodes. Particular attention is focused on the precise nanostructures, graphene efficacy, interfacial effects, and battery layout for realizing FLSBs with good flexibility, energy density, and cycling stability.
对可穿戴电子设备日益增长的需求使得需要具有高稳定性和理想能量密度的柔性电池。柔性锂硫电池（FLSB）因其通过低成本硫的多电子化学反应具有高理论能量密度而受到越来越多的研究。然而，FLSB的实际应用面临着几个障碍，包括其较低的实际能量密度、较短的寿命和较差的柔韧性。各种基于石墨烯的材料已被应用于解决这些问题。石墨烯具有良好的导电性和柔韧性，与其他活性/催化/柔性材料表现出协同效应，形成多功能石墨烯基材料，这些材料在FLSB中起着关键作用。本文综述了用作各种FLSB组件（包括阴极、中间层和阳极）的石墨烯基材料的最新进展。特别关注用于实现具有良好柔韧性、能量密度和循环稳定性的FLSB的精确纳米结构、石墨烯功效、界面效应和电池布局。
