文献类型：期刊文献

英文题名：Catalytically Active Carbon From Cattail Fibers for Electrochemical Reduction Reaction

作者：Liu, Yanyan[1,2,3] Hu, Meifang[3] Xu, Wei[1,2] Wu, Xianli[3] Jiang, Jianchun[1,2]

第一作者：Liu, Yanyan

通信作者：Liu, YY[1];Jiang, JC[1];Liu, YY[2];Jiang, JC[2];Liu, YY[3]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing, Jiangsu, Peoples R China;[3]Zhengzhou Univ, Coll Chem, Zhengzhou, Henan, Peoples R China

年份：2019

卷号：7

外文期刊名：FRONTIERS IN CHEMISTRY

收录：;Scopus(收录号：2-s2.0-85076709011);WOS:【SCI-EXPANDED(收录号:WOS:000500771000001)】；

基金：Financial supports from the National Key R&D Program of China (no. 2017YFD0601006), the Jiangsu Province Key Laboratory of Biomass Energy and Materials (no. JSBEM-S-201906), and the Special Project of Guangdong Province to Introduce Innovation and Entrepreneurship Team (no. 2016ZT06N467) are acknowledged.

语种：英文

外文关键词：nitrogen-doped carbon; hierarchical pores; biomass pyrolysis; hydrogen evolution reaction (HER); oxygen reduction reaction (ORR); catalytic active carbon

摘要：Catalytically active carbons derived from plant biomass are conducive to the construction of renewable energy source system and utilization of sustainable resources. In this article, natural cattail fibers are used to fabricate porous nitrogen-doped carbon via direct chemical activation and heteroatom modification treatments. The graphene-like sheets from biomass pyrolysis are assembled into three-dimensional carbon frameworks. The chemical activation of KHCO3 generated unique porous structure and N-containing molecules pyrolysis modification provided nitrogen doping atoms. High surface area up to 2,345 m(2)center dot g(-1) with simultaneous hierarchical pores (from micro to meso and macro) with abundant edge defects are achieved for these carbon materials. These materials have a very large external surface area up to 1,773 m(2)center dot g(-1). The above strategy exhibits a significant synergistic effect on the improvement of catalytic properties toward hydrogen evolution reaction and oxygen reduction reaction. The small over potentials and Tafel slopes of these catalytically active carbons demonstrate excellent potential applications in renewable energy conversion and storage systems. This research established a new link among environmental improvement, biomass conversion and renewable energy utilization.