2021年3月15日，我院黄俊杰教授在化学领域重要期刊《Applied Surface Science》（2020年影响因子IF为6.182）在线发表题为Tetraphenylbiphenyldiamine: Insight into anion storage mechanism as a cathode in dual ion batteries”的学术成果（文章链接 https://doi.org/10.1016/j.apsusc.2020.148581）。

该论文的通讯作者为黄俊杰教授，我校为第一完成单位和通讯单位。本研究首次将电子共轭的N,N,N’,N’-四苯基联苯二胺用做双离子电池正极，实现了PF₆^-在材料中的嵌入/脱出，并利用谱学揭示了阴离子（PF₆^-）的嵌脱机理。

Abstract

Dual ion batteries (DIBs) that involve the intercalation/deintercalation behavior of cations and anions present considerable application prospect in large-scale energy storage applications. However, the large size of anions has restricted its 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 π-electron conjugate system and amino redox groups as the cathode material in DIBs for the first time. TPB displays the reversible capacity of 77.4 and 52 mAh g^-1 at the current density 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 revealed 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 and the C atoms of biphenyl groups reversibly.  

该工作得到国家自然科学基金（21875142）经费资助。