期刊
ACS APPLIED ENERGY MATERIALS
卷 5, 期 6, 页码 6980-6985出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c00597
关键词
organic electrode; polyxylylviologen chloride; nitrogen redox; electrochemistry; chloride ion batteries
资金
- National Natural Science Foundation of China [51674147]
- QingLan Project of Jiangsu Province
- Priority Academic Program Develop-ment of Jiangsu Higher Education Institutions (PAPD)
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX21_1113]
Organic molecules, such as viologens, have shown potential as efficient anion storage materials but are limited by their high solubility. In this study, an insoluble polymerized polyxylylviologen chloride (PXVCl2) was developed as a chloride ion storage electrode in chloride ion batteries. The incorporation of graphene significantly improved the electrode's reaction reversibility and rate capability.
Organic molecules such as viologens with a nitrogen redox center show promise as efficient anion storage materials in rechargeable batteries. However, the high solubility of viologens in liquid electrolytes limits their wide electrochemical application. Herein, an insoluble polymerized polyxylylviologen chloride (PXVCl2) is first developed as a chloride ion storage electrode in chloride ion batteries. The as-prepared PXVCl2 electrode exhibits a competitive discharge capacity of 140 mA h g-1 (86% of the theoretical discharge capacity) compared to that of the previously reported organic conducting polymer electrodes. The incorporation of graphene in the PXVCl2 material achieves significant improvements in reaction reversibility and rate capability of the PXVCl2 electrode. Importantly, the nitrogen redox reactions based on chloride ion transfer of the PXVCl2 electrode are demonstrated.
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