First Author:Suyan Nui

Correspondence Author:Hongbin Sun

Co author:Yao Wang, Jianwen Zhang, Yiming Wang, Yaxiong Tian, Na Ju, Haipeng Wang, Shuya Zhao, Xinyue Zhang, Wenlong Zhang, Chengrui Li

Journal:Small

Issue:21

Volume:20

Impact Factor:13.0

DOI number:10.1002/smll.202309022

Affiliation of Author(s):Department of ChemistryNortheastern University

Teaching and Research Group:物理化学

Place of Publication:GERMANY

Abstract: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

Document Code:WOS:001121654500001

Discipline:Natural Science

First-Level Discipline:Chemistry

Page Number:2309022

ISSN No.:1613-6810

Translation or Not:no