A sulfur self-doped multifunctional biochar catalyst for overall water splitting and a supercapacitor from Camellia japonica flowers

作     者：Chengkai Xia Subramani Surendran Seulgi Ji Dohun Kim Yujin Chae Jaekyum Kim Minyeong Je Mi-Kyung Han Woo-Seok Choe Chang Hyuck Choi Heechae Choi Jung Kyu Kim Uk Sim Chengkai Xia;Subramani Surendran;Seulgi Ji;Dohun Kim;Yujin Chae;Jaekyum Kim;Minyeong Je;Mi-Kyung Han;Woo-Seok Choe;Chang Hyuck Choi;Heechae Choi;Jung Kyu Kim;Uk Sim

作者机构：School of Chemistry EngineeringSungkyunkwan UniversitySuwonRepublic of Korea Hydrogen Energy Technology LaboratoryKorea Institute of Energy Technology(KENTECH)NajuRepublic of Korea Department of Materials Science&EngineeringChonnam National UniversityGwangjuRepublic of Korea Theoretical Materials&Chemistry GroupUniversity of CologneCologneGermany Research InstituteNEEL SciencesInc.NajuSouth Korea Department of ChemistryPohang University of Science and Technology(POSTECH)Gyeongsangbuk-doRepublic of Korea 

出 版 物：《Carbon Energy》 (碳能源（英文）)

年 卷 期：2022年第4卷第4期

页      面：491-505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：National Research Foundation of Korea,Grant/Award Numbers:2016M3D1A1021141,2020R1A2C2006077,2022R1A2C1012419,2021R1A4A1024129,2021R1A5A1030054 Ministry of Trade,Industry and Energy(MOTIE,Korea),Grant/Award Number:20213030040590 

主　　题：activated carbon biomass supercapacitor sustainable chemistry water splitting 

摘      要：A versatile use of a sulfur self-doped biochar derived from Camellia japonica(camellia)flowers is demonstrated as a multifunctional catalyst for overall water splitting and a *** native sulfur content in the camellia flower facilitates in situ self-doping of sulfur,which highly activates the camellia-driven biochar(SA-Came)as a multifunctional catalyst with the enhanced electron-transfer ability and long-term *** water splitting,an SA-Came-based electrode is highly stable and shows reaction activities in both hydrogen and oxygen evolution reactions,with overpotentials of 154 and 362 mV at 10 mA cm^(−2),*** supercapacitors,SA-Came achieves a specific capacitance of 125.42 F g^(−1)at 2 A g^(−1)and high cyclic stability in a three-electrode system in a 1 M KOH *** demonstrated a high energy density of 34.54 Wh kg^(−1)at a power density of 1600 W kg^(−1)as a symmetric hybrid supercapacitor device with a wide working potential range of 0-1.6 V.