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【教师科研快讯】黄俊杰老师在《Applied Surface Science》上发表学术成果
2021-03-16 16:56   审核人:

20213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IF6.182)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)。

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.  

该工作到国家自然科学基金(21875142)经费资助。

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