文献类型：期刊文献

英文题名：High Power- and Energy-Density Supercapacitors through the Chlorine Respiration Mechanism

作者：Fan, Xiaotong[1];Huang, Kai[2];Chen, Long[1];You, Haipeng[1];Yao, Menglei[1];Jiang, Hao[1];Zhang, Ling[1];Lian, Cheng[2];Gao, Xiangwen[1,3];Li, Chunzhong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem Engn,Sch Mat Sci & Engn ,Key Lab Ultrafin, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Chem & Mol Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Univ Oxford, Dept Mat, Oxford OX1 3PH, England

年份：2023

卷号：62

期号：2

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20225013227241);WOS:【SCI-EXPANDED(收录号:WOS:000893523000001)】；

基金：This work was supported by the National Natural Science Foundation of China (22108075, 21838003, 21975074), the Fundamental Research Funds for the Central Universities (222201718002). Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutes of High Learning. The authors thank Prof. Zhuo Wang from University of Shanghai for Science and Technology for the ACD materials preparation.

语种：英文

外文关键词：Aqueous Electrolyte; Chlorine; Porous Carbon; Respiring Supercapacitor

摘要：Supercapacitor represents an important electrical energy storage technology with high-power performance and superior cyclability. However, currently commercialized supercapacitors still suffer limited energy densities. Here we report an unprecedentedly respiring supercapacitor with chlorine gas iteratively re-inspires in porous carbon materials, that improves the energy density by orders of magnitude. Both electrochemical results and theoretical calculations show that porous carbon with pore size around 3 nm delivers the best chlorine evolution and adsorption performance. The respiring supercapacitor with multi-wall carbon nanotube as the cathode and NaTi2(PO4)(3) as the anode can store specific energy of 33 Wh kg(-1) with negligible capacity loss over 30 000 cycles. The energy density can be further improved to 53 Wh kg(-1) by replacing NaTi2(PO4)(3) with zinc anode. Furthermore, thanks to the extraordinary reaction kinetics of chlorine gas, this respiring supercapacitor performs an extremely high-power density of 50 000 W kg(-1).