文献类型：期刊文献

英文题名：Temperature-directed growth of highly pyridinic nitrogen doped, graphitized, ultra-hollow carbon frameworks as an efficient electrocatalyst for the oxygen reduction reaction

作者：He, Bing[1];Liu, Fujian[1];Yan, Shouke[2]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Huancheng West Rd 508, Shaoxing 312000, Peoples R China;[2]Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

年份：2017

卷号：5

期号：34

起止页码：18064

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：SCI-EXPANDED(收录号：WOS:000408592900037)、、EI(收录号：20173604126293)、Scopus(收录号：2-s2.0-85028709098)、WOS

基金：We acknowledge the financial support from the National Natural Science Foundation of China (21573150, 21203122, 11575117), the Natural Science Foundation of Zhejiang Province (LY15B030002) and Science and Technology Planning Project of Shaoxing City (2015B70004). We sincerely thank professor Liming Dai of Case Western Reserve University for his valuable discussion on this work.

语种：英文

外文关键词：Carbon - Carbonization - Doping (additives) - Electrocatalysts - Electrolytic reduction - Graphitization - Nitrogen - Oxygen

外文摘要：We report here the successful synthesis of highly pyridinic nitrogen doped, graphitized, ultra-hollow carbon frameworks (N-HCF-Ts, where T stands for the carbonization temperature) via a template-free temperature-directed growth route, using dicyandiamide and glucose as precursors. N-HCF-Ts have ultra high pyridinic nitrogen contents (up to 14.9 wt%), abundant meso-macropores, large specific surface areas (897-1434 m(2) g(-1)), and ultra large pore volumes (4.47-8.47 cm(3) g(-1)). The structural characteristics of the ultra high pyridinic nitrogen sites, abundant meso-macropores, and graphitized and ultra-hollow frameworks make N-HCF-Ts highly efficient and stable electrocatalysts for the oxygen reduction reaction. The most positive reduction potential was evident for N-HCF-900 at 0.83 V (vs. the RHE), which is even comparable to that of commercial (20 wt%) Pt/C and much better than those of most of the various nitrogen doped carbon-based metal-free electrocatalysts.