Symmetrizing cathode-anode response to speed up charging of nanoporous supercapacitors

作     者：Tangming Mo Liang Zeng Zhenxiang Wang Svyatoslav Kondrat Guang Feng Tangming Mo;Liang Zeng;Zhenxiang Wang;Svyatoslav Kondrat;Guang Feng

作者机构：State Key Laboratory of Coal CombustionSchool of Energy and Power EngineeringHuazhong University of Science and Technology(HUST)Wuhan430074China Nano Interface Centre for EnergySchool of Energy and Power EngineeringHuazhong University of Science and Technology430074China Institute of Physical ChemistryPolish Academy of SciencesKasprzaka 44/52Warsaw01-224Poland Max-Planck-Institut FuÈr Intelligente SystemeStuttgartD-70569Germany IV.Institut FuÈr Theoretische PhysikUniversit 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2022年第7卷第1期

页      面：95-104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：funding support from the National Natural Science Foundation of China(51876072) the Hubei Provincial Natural Science Foundation of China(2019CFA002,2020CFA093) supported by the Program for HUST Academic Frontier Youth Team 

主　　题：Nanoporous carbon Charging dynamics Charge storage mechanism Overfilling Overcharging 

摘      要：Asymmetric behaviors of capacitance and charging dynamics in the cathode and anode are general for nanoporous *** this behavior is essential for the optimal design of ***,we perform constant-potential molecular dynamics simulations to reveal asymmetric features of porous supercapacitors and their effects on capacitance and charging *** simulations show that,counterintuitively,charging dynamics can be fast in pores providing slow ion diffusion and vice *** electrodes with singlesize pores,multi-pore electrodes show overcharging and accelerated co-ion desorption,which can be attributed to the subtle interplay between the dynamics and charging *** find that capacitance and charging dynamics correlate with how the ions respond to an applied cell voltage in the cathode and *** demonstrate that symmetrizing this response can help boost power density,which may find practical applications in supercapacitor optimization.