文献类型：期刊文献

英文题名：Nitrogen and oxygen dual-doped activated carbon as electrode material for high performance supercapacitors prepared by direct carbonization of amaranthus

作者：Wang, Ao[1,2] Sun, Kang[1,2] Li, Jihui[1] Xu, Wei[1] Jiang, Jianchun[1,2]

第一作者：王傲

通信作者：Jiang, JC[1]

机构：[1]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Key & Open Lab Forest Chem Engn,SFA, Inst Chem Ind Forest Prod,Key Lab Biomass Energy, 16,Suojin 5th Village, Nanjing 210042, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry New Technol, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2019

卷号：231

起止页码：311-321

外文期刊名：MATERIALS CHEMISTRY AND PHYSICS

收录：;EI(收录号：20191806852527);Scopus(收录号：2-s2.0-85064808463);WOS:【SCI-EXPANDED(收录号:WOS:000491428200039)】；

基金：This work was supported by the Foundation of Jiangsu Key Lab of Biomass Energy and Material (JSBEM-S-201804), Fundamental Research Funds of Research Institute of Forest New Technology (CAFYBB2017SY031).

语种：英文

外文关键词：Supercapacitor; Amaranthus; Direct carbonization; Nitric acid treatment; Capacitance

摘要：With supercapacitors application promotion, looking for simple, energy efficient and environment-friendly method for expandable production of carbon materials with uniform heteroatoms doping as high-performance electrode materials for supercapacitors becomes the keystone of current research. Here, we present a simple, not costly, low environmental pollution method for preparation of nitrogen and oxygen dual-doped activated carbons via one step direct carbonization of natural, renewable and abundant amaranthus followed by ultrasonic treatment with nitric acid. Most noteworthy is XC-700-50, which exhibits high conductivity, moderate surface area, reasonable pore size distribution and high O and N doping contents (12.05% and 5.31% respectively). Benefiting from these features, it displays high gravimetric capacitance (326 F g(-1) and 294 F g(-1) at 0.5 A g(-1) and 1 A g(-1), respectively), good rate capability, as well as excellent cycling stability (about 97.1% and 94.4% of capacitance retention after 10000 cycles at 2 A g(-1) and 10 A g(-1), respectively) in the high mass loading electrode (8 mg cm(-2)), making it a promising electrode material for supercapacitors.