Phosphorus incorporation-induced adsorption behavior modulation for carbon cathodes enables ultrastable and high-energy aqueous Zn-ion hybrid capacitors  

作　　者：Lai Yu Xiaoyue He Rong Liu Guanglin Wan Xinyi Ma Anqiang Pan Liang Shi Genqiang Zhang 

机构地区：[1]Hefei National Research Center for Physical Sciences at the Microscale,CAS Key Laboratory of Material for Energy Conversion,Department of Material Science and Engineering,University of Science and Technology of China,Hefei 230026,China [2]School of Materials and Engineering,Xinjiang University,Urumqi 830046,China

出　　处：《Science China Chemistry》2025年第3期900-907,共8页中国科学(化学英文版)

基　　金：the financial support from the National Natural Science Foundation of China (Grant No.52072379);the Recruitment Program of Global Experts and the Fundamental Research Funds for the Central Universities (WK2060000016)。

摘　　要：The aqueous zinc ions hybrid capacitors(ZHCs)have great potential for future energy storage devices by their high safety and low cost merits,more importantly,it could combine the advantages of batteries and supercapacitors with high energy density and power output,respectively.However,the development of reliable cathodes is still a challenge with the unsatisfactory cycling stability and limited reaction kinetic,severely restricting its further commercial applications.Herein,we present phosphorus functionalized nitrogen-doped hierarchical porous carbon nanosheets(PN-HPCNS),where the P incorporation could effectively enhance the electronic transfer kinetics and ion adsorption capability to achieve superior zinc-ion storage properties.The asprepared PN-HPCNS cathode-based ZHC exhibits a high energy and power density(169.1 Wh kg^(-1)/68 W kg^(-1),15,840 W kg^(-1)/30.8 Wh kg^(-1))and long cycling lifespans more than 20,000 cycles with 92.0%capacity retention.Systematic characterizations coupled with kinetics studies indicate that phosphorus modification is crucial to superior zinc ion storage,enabling PN-HPCNS with favorable reaction kinetics,promoting ion adsorption by providing more active sites.Moreover,the theoretical calculation reveals that the phosphorus modification could enhance the adsorption ability,contributing to the superior ZHCs performance of PN-HPCNS.

关 键 词：CARBON zinc ion hybrid capacitors CATHODE NANOSHEET density function theory 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM53[电气工程—电器]