阴极
插层(化学)
电池(电)
吡嗪
电化学
水溶液
材料科学
储能
氧化还原
化学工程
纳米技术
无机化学
电极
化学
有机化学
物理化学
功率(物理)
工程类
冶金
物理
量子力学
作者
Suyan Niu,Yao Wang,Jianwen Zhao,Yiming Wang,Tian Yan-wen,Na Ju,Haipeng Wang,Shuya Zhao,Xinyue Zhang,Wenlong Zhang,Chengrui Li,Hong Sun
出处
期刊:Small
[Wiley]
日期:2023-12-12
被引量:2
标识
DOI:10.1002/smll.202309022
摘要
Abstract Seeking organic cathode materials with low cost and long cycle life that can be employed for large‐scale energy storage remains a significant challenge. This work has synthesized an organic compound, triphenazino[2,3‐b](1,4,5,8,9,12‐hexaazatriphenylene) (TPHATP), with as high as 87.16% yield. This compound has a highly π‐conjugated and rigid molecular structure, which is synthesized by capping hexaketocyclohexane with three molecules of 2,3‐diaminophenazine derived from low‐cost o‐phenylenediamine, and is used as a cathode material for assembling aqueous rechargeable zinc ion batteries. Both experiments and DFT calculations demonstrate that the redox mechanism of TPHATP is predominantly governed by H + storage. The Zn‐intercalation product of nitride‐type compound, is too unstable to form in water. Moreover, the TPHATP cathode exhibits a capacity of as high as 318.3 mAh g −1 at 0.1 A g −1 , and maintained a stable capacity of 111.9 mAh g −1 at a large current density of 10 A g −1 for 5000 cycles with only a decay of 0.000512% per cycle. This study provides new insights into understanding pyrazine as an active redox group and offers a potential affordable aqueous battery system for grid‐scale energy storage.
科研通智能强力驱动
Strongly Powered by AbleSci AI