文献类型：期刊文献

英文题名：Tetraphenylbiphenyldiamine: Insight into anion storage mechanism as a cathode in dual ion batteries

作者：Zhou, Le[1];Zhang, Yi[1];Amzil, Said[1];Qiu, Tianpei[1];Xu, Weijie[1];Jiang, Fei[2];Fang, Zebo[2];Huang, Junjie[1];Dai, Guoliang[3]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Math Informat Coll, Shaoxing 312000, Peoples R China;[3]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, Suzhou 215009, Peoples R China

年份：2021

卷号：542

外文期刊名：APPLIED SURFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000609011000001)、、EI(收录号：20205109625782)、Scopus(收录号：2-s2.0-85097584613)、WOS

基金：This work is supported by the National Natural Science Foundations of China (21875142, 51872186, 21203135), the computing center for Fudan University and Compute Canada are thanked for computer time.

语种：英文

外文关键词：N,NN ' N '-tetra-phenyl-1; 1 '-Biphenyl-4,4 '-diamine; Anion storage; Cathode; Dual ion batteries

外文摘要：Dual ion batteries (DIBs) that involve the intercalation/de-intercalation behavior of cations and anions present considerable application prospect in large-scale energy storage applications. However, the large size of anions has restricted the reversible intercalation in the cathode of DIBs efficiently. Here we propose N,N,N',N'- tetraphenyl-1,1'-biphenyl-4,4'-diamine (TPB) with large tc-electron conjugate system and amino redox groups as the cathode material of DIBs for the first time. TPB displays the reversible capacity of 77.4 and 52 mAh g(-1) at the current densities of 50 and 1000 mA g(-1) respectively, and the capacity retention of 61% after 450 cycles at 50 mA g(-1) . The PF6- storage mechanism of TPB has been studied by molecular structure evolution, quantitative kinetics and theoretical calculations, which indicate TPB presents the redox activity to form/break the C=N+ bond for storing PF6- around the N atoms and the C atoms of biphenyl groups reversibly. This work provides insight into designing and understanding the high anion storage cathodes of DIBs.