文献类型：期刊文献

中文题名：Construction of the hierarchical porous biochar with an ultrahigh specific surface area for application in high-performance lithium-ion capacitor cathode

作者：Haotian Zhu[1,2,3,4,5] Jiayuan Li[1,2,3,4,5] Dichao Wu[1,2,3,4,5] Gaoyue Zhang[6] YunJuan Sun[1,2,3,4,5] Ao Wang[1,2,3,4] Kang Sun[1,2,3,4]

第一作者：Haotian Zhu

机构：[1]Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing 210042,China;[2]Key Laboratory of Biomass Energy and Material,Nanjing 210042,Jiangsu,China;[3]National Engineering Laboratory for Biomass Chemical Utilization,Nanjing 210042,China;[4]Key and Open Laboratory on Forest Chemical Engineering,SFA,Nanjing 210042,China;[5]Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China;[6]School of Energy and Environment,Southeast University,Nanjing 210096,China

年份：2023

卷号：5

期号：1

起止页码：803-814

中文期刊名：Biochar

外文期刊名：生物炭（英文）

收录：Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：National Natural Science Foundation of China(51976234);Forestry technology projects of Zhejiang Province(2023SY04);Foundation of Jiangsu Key Lab of Biomass Energy and Material(JSBEM-S-202101);National Nonprofit Institute Research Grant of Chinese Academy of Forestry(CAFYBB2020ZF001).

语种：英文

中文关键词：Ultrahigh specific surface area;Hierarchical porous biochar;Multistage activation;Lithium-ion capacitor;Cathode materials

分类号：TQ127.11;TM53

摘要：Biochar with a highly accessible specific surface area can display a higher performance when it is used as the cathode of lithium-ion capacitors.Facing the complex composition and diversity of biomass precursors,there is a lack of a universally applicable method to construct hierarchical porous biochar controllably.In this work,a multi-stage activation strategy combining the feature of different activation methods is proposed for this target.To confirm the porous characteristic in prepared samples,N_(2) adsorption-desorption and transmission electron microscope were used.As the optimal sample,BC-P3K4S had the highest specific surface area of 3583.3 m^(2) g^(?1).Evaluated as the electrode for a lithium-ion capacitor,BC-P3K4S displayed a capacity of 139.1 mAh g^(?1) at 0.1 A g^(?1).After coupling it with pre-lithiated hard carbon,the full device exhibited a high energy density of 129.3 W h kg^(?1) at 153 W kg^(?1).The work outlined herein offers some insights into the preparation of hierarchical porous biochar from complex biomass by multistep activation method.