多功能锂硫电池隔膜  

Multifunctional Lithium-Sulfur Battery Separator

作　　者：杨凯[1] 章胜男 韩东梅[1] 肖敏[1] 王拴紧[1] 孟跃中[1] Kai Yang;Shengnan Zhang;Dongmei Han;Min Xiao;Shuanjin Wang;Yuezhong Meng(The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]中山大学广东省低碳化学与过程节能重点实验室/光电材料与技术国家重点实验室,广州510275

出　　处：《化学进展》2018年第12期1942-1959,共18页Progress in Chemistry

基　　金：国家自然科学基金项目(No.51573215;U1301244)资助~~

摘　　要：锂硫电池具有远超锂离子电池的高理论比容量(1675 mAh·g^(-1)),并且兼具硫资源丰富、生产成本低廉以及环境友好等优势。然而,多硫离子的穿梭效应造成金属锂负极钝化、引起电池容量和库仑效率下降、循环稳定性变差等严重问题,限制锂硫电池的实际应用。从正极和负极之间的隔膜层出发,引入多硫离子穿梭的阻挡层被认为是极为有效的研究策略。这些研究策略在缓解多硫离子穿梭、提高活性物质利用效率、延长循环寿命和循环稳定性方面具有显著效果。本文分类综述了近年来锂硫电池隔膜功能化的研究进展,并对未来隔膜功能化的研究趋势进行了预测。Lithium-sulfur batteries, with the advantages of rich sulfur resources, low production costs, and environmental friendliness, have a high theoretical specific capacity(1675 mAh·g^-1). However, polysulfide shuttle causes serious problems such as the passivation of metal lithium anode, the decrease of battery capacity and coulomb efficiency, and hinders its practical applications. It is considered to be an extremely effective strategy to introduce a barrier layer to restrain polysulfide shuttle between the cathode and anode, which presents excellent performance in alleviating polysulfide shuttle, improving the utilization efficiency of active materials and extending cycle life and cycle stability. Herein, the research progress of the functional lithium sulfur battery separators is reviewed. Furthermore, the future research trend is also predicted.

关 键 词：锂硫电池 多功能隔膜 多硫离子穿梭 多硫离子阻挡层 

分 类 号：O646[理学—物理化学] TM911[理学—化学]