文献类型：期刊文献

英文题名：Graphene-Like 2D Porous Carbon Nanosheets Derived from Cornstalk Pith for Energy Storage Materials

作者：Gao, Kezheng[1] Niu, Qingyuan[1] Tang, Qiheng[2] Guo, Yaqing[1] Wang, Lizhen[1]

第一作者：Gao, Kezheng

通信作者：Niu, QQ[1];Wang, LZ[1]

机构：[1]Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, State Lab Surface & Interface Sci & Technol, Zhengzhou 450002, Henan, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu, Beijing 100091, Peoples R China

年份：2018

卷号：47

期号：1

起止页码：337-346

外文期刊名：JOURNAL OF ELECTRONIC MATERIALS

收录：;EI(收录号：20173704149797);Scopus(收录号：2-s2.0-85029009564);WOS:【SCI-EXPANDED(收录号:WOS:000418580800039)】；

基金：Financial support was kindly supplied by grants from National Natural Science Foundation of China (Nos. 21501154 and 21601162), Important Research Project at the University of Henan Province (16A430031), the Project of Henan Province Science and Technology Department (152102210352), Doctoral Research Foundation of Zhengzhou University of Light Industry (2014BSJJ059 and 2014BSJJ060), and Foundation of Zhengzhou University of Light Industry (2015XJJZ030 and 2015XJJY004).

语种：英文

外文关键词：Cornstalk pith; cornstalk skin; self-template; self-catalyst; supercapacitor

摘要：Biomass materials from different organisms or different parts (even different periods) of the same organism have different microscopic morphologies, hierarchical pore structures and even elemental compositions. Therefore, carbon materials inheriting the unique hierarchical microstructure of different biomass materials may exhibit significantly different electrochemical properties. Cornstalk pith and cornstalk skin (dried by freeze-drying) exhibit significantly different microstructures due to their different biological functions. The cornstalk skin-based carbon (S-carbon) exhibits a thick planar morphology, and the Barrett-Emmett-Teller (BET) surface area is only about 332.07 m(2) g(-1). However, cornstalk pith-based carbon (P-carbon) exhibits a graphene-like 2D porous nanosheet structure with a rough, wrinkled morphology, and the BET surface area is about 805.17 m(2) g(-1). In addition, a P-carbon supercapacitor exhibits much higher specific capacitance and much better rate capability than an S-carbon supercapacitor in 6 M potassium hydroxide (KOH) electrolyte.