文献类型：期刊文献

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

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

第一作者：Zhu, Haotian

通信作者：Wang, A[1];Sun, K[1];Wang, A[2];Sun, K[2];Wang, A[3];Sun, K[3];Wang, A[4];Sun, K[4]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[4]SFA, Key & Open Lab Forest Chem Engn, Nanjing 210042, Peoples R China;[5]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China;[6]Southeast Univ, Sch Energy & Environm, Nanjing 210096, Peoples R China

年份：2023

卷号：5

期号：1

外文期刊名：BIOCHAR

收录：;Scopus(收录号：2-s2.0-85165683591);WOS:【SCI-EXPANDED(收录号:WOS:001035765500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (51976234), Forestry technology projects of Zhejiang Province (2023SY04), the 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

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

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.