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High Rate and Long Lifespan Sodium-Organic Batteries Using Pseudocapacitive Porphyrin Complexes-Based Cathode

Xi Chen Ping Gao Xin Feng Bo Ren Liangzhu Jiang Hongbo Shu Xiukang Yang Zhi Chen Xiujuan Sun Enhui Liu

纳微快报（英文）2021，Vol.13Issue(5)：1-16,16.

High Rate and Long Lifespan Sodium-Organic Batteries Using Pseudocapacitive Porphyrin Complexes-Based Cathode

High Rate and Long Lifespan Sodium?Organic Batteries Using Pseudocapacitive Porphyrin Complexes?Based Cathode

Xi Chen ¹Ping Gao ¹Xin Feng ¹Bo Ren ¹Liangzhu Jiang ¹Hongbo Shu ¹Xiukang Yang ¹Zhi Chen ²Xiujuan Sun ¹Enhui Liu¹

作者信息

1. Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Key Laboratory for Green Organic Synthesis and Application of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
2. International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, College of Chemistry and Enviromental Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
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摘要

Abstract

Sodium-organic batteries utilizing natural abundance of sodium element and renewable active materials gain great attentions for grid-scale applications. However, the development is still limited by lack of suitable organic cathode materials with high electronic conductivity that can be operated stably in liquid electrolyte. Herein, we present 5,15-bis(ethynyl)-10,20-diphenylporphyrin (DEPP) and [5,15-bis(ethynyl)-10,20-diphenylporphinato]copper(II) (CuDEPP) as new cathodes for extremely stable sodium-organic batteries. The copper(II) ion partially contributes the charge storage and significantly stabilizes the structure of porphyrin complex for electrochemical energy storage. In situ electrochemical stabilization of organic cathode with a lower charging current density was identified which enables both improved high energy density and power density. An excellent long-term cycling stability up to 600 cycles and an extremely high power density of 28 kW kg?1 were achieved for porphyrin-based cathode. This observation would open new pathway for developing highly stable sodium-organic cathode for electrochemical energy storage.

关键词

Organic cathode/Sodium-organic batteries/Porphyrin complex/Rechargeable batteries/Pseudocapacitive effect

Key words

Organic cathode/Sodium-organic batteries/Porphyrin complex/Rechargeable batteries/Pseudocapacitive effect

引用本文复制引用

Xi Chen,Ping Gao,Xin Feng,Bo Ren,Liangzhu Jiang,Hongbo Shu,Xiukang Yang,Zhi Chen,Xiujuan Sun,Enhui Liu..High Rate and Long Lifespan Sodium-Organic Batteries Using Pseudocapacitive Porphyrin Complexes-Based Cathode[J].纳微快报（英文）,2021,13(5):1-16,16.

基金项目

This work was financially supported by National Natural Science Foundation of China(21805236),Sci-entific Research Fund of Hunan Provincial Education Department(18B062),Fundamental Research Fund of Xiangtan University(18QDZ14),and Guangdong Basic and Applied Basic Research Foundation(2019A1515110819).P.Gao thanks the support from Dr.Zhirong Zhao-Karger,Prof.Dr.Maximilian Fichtner and Prof.Dr.Stefano Passerini,Helmholtz Institute Ulm(HIU)and Karlsruhe Institute of Technology(KIT),Germany. （21805236）

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ISSN：2311-6706

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