第一作者：Suyan Nui

通讯作者：Hongbin Sun

合写作者：Yao Wang, Jianwen Zhang, Yiming Wang, Yaxiong Tian, Na Ju, Haipeng Wang, Shuya Zhao, Xinyue Zhang, Wenlong Zhang, Chengrui Li

发表刊物：Small

期号：21

卷号：20

影响因子：13.0

DOI码：10.1002/smll.202309022

所属单位：Department of ChemistryNortheastern University

教研室：物理化学

刊物所在地：GERMANY

摘要：Seeking organic cathode materials with low cost and long cycle life that can beemployed for large-scale energy storage remains a significant challenge. Thiswork has synthesized an organic compound, triphenazino[2,3-b](1,4,5,8,9,-12-hexaazatriphenylene) (TPHATP), with as high as 87.16% yield. Thiscompound has a highly π-conjugated and rigid molecular structure, which issynthesized by capping hexaketocyclohexane with three molecules of2,3-diaminophenazine derived from low-cost o-phenylenediamine, and is usedas a cathode material for assembling aqueous rechargeable zinc ion batteries.Both experiments and DFT calculations demonstrate that the redoxmechanism of TPHATP is predominantly governed by H+ storage. TheZn-intercalation product of nitride-type compound, is too unstable to form inwater. Moreover, the TPHATP cathode exhibits a capacity of as high as 318.3mAh g−1 at 0.1 A g−1 , and maintained a stable capacity of 111.9 mAh g−1 at alarge current density of 10 A g−1 for 5000 cycles with only a decay of0.000512% per cycle. This study provides new insights into understandingpyrazine as an active redox group and offers a potential affordable aqueousbattery system for grid-scale energy storage

论文编号：WOS:001121654500001

学科门类：理学

一级学科：化学

页面范围：2309022

ISSN号：1613-6810

是否译文：否