Thermally Chargeable Proton Capacitor Based on Redox-Active Effect for Energy Storage and Low-Grade Heat Conversion

作     者：Yufeng An Zhiwei Li Yao Sun Zhijie Chen Jiangmin Jiang Hui Dou Xiaogang Zhang Yufeng An;Zhiwei Li;Yao Sun;Zhijie Chen;Jiangmin Jiang Hui Dou;Xiaogang Zhang

作者机构：Jiangsu Key Laboratory of Electrochemical Energy Storage TechnologiesCollege of Material Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 211106China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2023年第6卷第1期

页      面：384-391页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：This work was supported by the National Natural Science Foundation of China(U1802256,21773118) Leading Edge Technology of Jiangsu Province(BK20202008) Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX21_0204) Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) 

主　　题：capacitors low-grade heat redox-active effect thermal chargeability 

摘      要：Thermal energy is abundantly available in our daily life and industrial production,and especially,low-grade heat is often regarded as a *** and utilizing this ignored energy by low-cost and simple technologies may become a smart countermeasure to relieve the energy ***,a unique device has been demonstrated to achieve high value-added conversion of low-grade heat by introducing redox-active organic alizarin(AZ)onto N-doped hollow carbon nanofibers(N–HCNF)***-prepared N–HCNF/AZ can deliver a high specific capacitance of 514.3 F g^(-1)(at 1 A g^(-1))and an outstanding rate capability of 60.3%even at 50 A g^(-1).Meanwhile,the assembled symmetric proton capacitor can deliver a high energy density of 28.0 Wh kg^(-1) at 350.0 W kg^(-1) and a maximum power density of 35.0 kW kg^(-1) at 17.0 Wh kg^(-1).Significantly,the thermally chargeable proton capacitors can attain a surprisingly high Seebeck coefficient of 15.3 mV K^(-1) and a power factor of 6.02µW g^(-1).Taking advantage of such high performance,a satisfying open-circuit voltage of 481.0 mV with a temperature difference of 54 K is *** research provides new insights into construction of high value-added energy systems requiring high electrochemical performances.