新型炭材料2020，Vol.35Issue(6)：630-645,16.DOI:10.1016/S1872-5805(20)60519-4
空心炭球在室温钠硫电池中的研究进展
Recent progress on the design of hollow carbon spheres to host sulfur in room-temperature sodium-sulfur batteries
摘要
Abstract
Room-temperature sodium-sulfur (RT-Na/S) batteries are an important class of rechargeable batteries with a high theo-retical capacity of 1 675 mAh g-l and energy density up to 1 276 Wh kg-1 (based on Na2S). They are recognized as attractive next-generation high-energy-density devices for large-scale energy storage owing to the abundance and low cost of sodium and sulfur.However, similar to the working principle in lithium-sulfur batteries, they suffer from some basic problems such as the poor conduc-tivity of elemental sulfur, a large volume change during charge-discharge cycling and a serious shuttle effect caused by sodium poly-sulfide dissolution. Moreover, the shuttle effect and volume change seem more pronounced in RT-Na/S batteries, which further de-creases their performance and seriously hinders the progress towards their practical application. A fast growth in designing porous carbons, especially hollow carbon spheres (HCSs), as a sulfur host to address these problems has been seen in recent years, due to their unique structural features such as a large void space, a permeable shell, and simple functionalization. This review summarizes recent progress in HCS-based materials as the sulfur hosts in RT-Na/S batteries. Beginning with a brief introduction to RT-Na/S batteries, carbon hosts and design strategies for preparing HCSs, particular emphasis is placed on manipulating the pore structure,heteroatom doping and decoration with metal species with the aim of alleviating the " shuttle effect" and thus improving the perform-ance. Finally, perspectives on current challenges and future research directions are discussed.关键词
空心炭球/硫正极材料/穿梭效应/室温钠硫电池Key words
Hollow carbon spheres/ Sulfur host materials/ Shuttle effect/ Room-temperature sodium-sulfur batteries分类
化学化工引用本文复制引用
杨佳迎,李贺军,韩浩杰,Hlib Repich,智日成,曲昌镇,孔龙,Stefan Kaskel,王洪强,徐飞..空心炭球在室温钠硫电池中的研究进展[J].新型炭材料,2020,35(6):630-645,16.基金项目
国家自然科学基金(51702262,51972270,51872240,51911530212) （51702262,51972270,51872240,51911530212）
陕西省自然科学基金(2020JZ-07) （2020JZ-07）
中国博士后科学基金(2018T111093,2018M643732).The National Natural Science Foundation of China(51702262,51972270,51872240,51911530212),the Natural Science Foundation of Shaanxi Province(2020JZ-07),China Postdoctoral Science Foundation(2018T111093,2018M643732). （2018T111093,2018M643732）
