Renewable wood-derived hierarchical porous,N-doped carbon sheet as a robust self-supporting cathodic electrode for zinc-air batteries

作     者：Xiaohua Deng Zhu Jiang Yingying Chen Dai Dang Quanbing Liu Xiaoyang Wang Xu Yang Xiaohua Deng;Zhu Jiang;Yingying Chen;Dai Dang;Quanbing Liu;Xiaoyang Wang;Xu Yang

作者机构：School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China Department of Chemical Systems EngineeringGraduate School of EngineeringNagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2023年第34卷第1期

页      面：133-138页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0703[理学-化学] 

基　　金：the financial support from the National Natural Science Foundation of China(No.21905055) the start-up funding of Guangdong University of Technology(Nos.220413207 and 220418129) support from Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province。 

主　　题：Carbon sheet Hierarchical porous structure Metal-free Zinc-air batteries Long-life stability 

摘      要：Heteroatom doped porous carbon materials have emerged as essential cathode material for metal-air battery systems in the context of soaring demands for clean energy conversion and storage.Herein,a three-dimensional nitrogen-doped carbon self-supported electrode(TNCSE)is fabricated through thermal treatment and acid activation of raw wood.The resulting TNCSE retains the hierarchical porous architecture of parent raw lumber and holds substantial defect sites and doped N sites in the carbon skeleton.Assembled as a cathode in the rechargeable zinc-air battery,the TNCSE exhibits a superior peak power density of 134.02 m W/cm^(2)and an energy density of 835.92 m Ah/g,significantly exceeding the ones reference commercial 20%Pt/C does.More strikingly,a limited performance decay of 1.47%after an ultra long-period(500 h)cycle is also achieved on the TNCSE.This work could offer a green and cost-save approach for rationally converting biomass into a robust self-supporting cathode material for a rechargeable zinc-air battery.