文献类型：期刊文献

英文题名：Nano-flower-like porous carbon derived from soybean straw for efficient N-S co-doped supercapacitors by coupling in-situ heteroatom doping with green activation method

作者：Jiao, Shenghui[1] Yao, Yutong[1] Zhang, Junliu[1] Zhang, Liqiong[1] Li, Changwei[1] Zhang, Huixin[1] Zhao, Xin[1,2,3] Chen, Honglei[1,2] Jiang, Jianchun[2,3]

第一作者：Jiao, Shenghui

通信作者：Zhao, X[1];Chen, HL[1];Jiang, JC[1]

机构：[1]Qilu Univ Technol, Shandong Acad Sci, State Key Lab Biobased Mat & Green Papermaking, Jinan 250353, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210042, Peoples R China

年份：2023

卷号：615

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20230313381995);Scopus(收录号：2-s2.0-85146099152);WOS:【SCI-EXPANDED(收录号:WOS:000995337800001)】；

基金：The work was supported by the National Natural Science Foundation of China (No. 32271801, 32271802) , Shandong Provincial Natural Science Foundation (No. ZR2022MC190) , the training-funding from Qilu University of Technology, Shandong Academy of Sciences (No. 2022PY020) and the QUTJBZ Program (No. 2022JBZ01-05)

语种：英文

外文关键词：Nanoflower carbon; Soybean straw; Liquefication; In-situ doping; Supercapacitor

摘要：The interlayer nanoflower porous carbon was prepared in this paper by coupling green and sustainable liquefied with in-situ doping using soybean straw as a biomass precursor. The pore structures of the obtained samples were reasonably controlled with non-toxic potassium citrate. The specific surface area of SSL-N/S-K-800 reaches 1756.74 m2 g(-1), and the microporosity is 75.38%. In the three-electrode system test, SSL-N/S-K-700 exhibits a specific capacitance of 220 F g(-1) at a current density of 0.5 A g(-1). Moreover, in the two-electrode system test, the SSL-N/S-K-700 assembled symmetric supercapacitor exhibits an energy density of 11.24 W h kg(-1) at a power density of 400 W kg(-1). Notably, excellent cycling stability (capacitance retention > 99.2%) is presented after 10,000 cycles. The superior electrochemical properties are attributed to the ion diffusion channels provided by the macropores and mesopores, and the abundant micropores can provide ion adsorption and desorption sites. Additionally, the synchronizing N S doping effectively enhances the pseudo-capacitance of the material. This work explores a green, efficient and sustainable approach for achieving high value-added utilization of waste biomass and enhancing the energy density of supercapacitors for electrochemical energy storage.