文献类型：期刊文献

英文题名：Supermicroporous carbons with nitrogen and defect co-doped as high-efficient oxygen reduction catalysts in both alkaline and acidic medium

作者：Liu, Fujian[1];He, Bing[1]

机构：[1]Shaoxing Univ, Dept Chem, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China

年份：2020

卷号：362

外文期刊名：ELECTROCHIMICA ACTA

收录：SCI-EXPANDED(收录号：WOS:000582869700074)、、EI(收录号：20204209354431)、Scopus(收录号：2-s2.0-85092476128)、WOS

基金：We acknowledge the financial support from the National Natural Science Foundation of China (grant no. 22005192, 21573150, 21978052) and the Natural Science Foundation of Zhejiang Province (LQ18E030001).

语种：英文

外文关键词：Nitrogen-doped porous carbons; Structural defects; Supermicroporosity; Metal-free electrocatalyst; Oxygen reduction reaction

外文摘要：A nitrogen and defect co-doped carbonaceous electrocatalyst with uniform supermicroporous architecture toward oxygen reduction reaction (ORR) was successfully synthesized by using zinc gluconate as an intramolecular defect formation agent. The resultant novel electrocatalysts possess two kinds of active sites (nitrogen and defects) and facilitate the catalytic species to approach the three phase interfaces, which accelerate the breaking of oxygen bonds and effectively prevent the active sites from protonation. Owing to the synergistic effects of nitrogen-doping and topological defects, the supermicroporous structure enriched metal-free catalyst exhibits a superior ORR activity with a half-wave potential up to 0.89 V (vs. RHE) in 0.1 M KOH and 0.77 V (vs. RHE) in 0.1 M HClO4, which has tremendous application potentials in metal-air batteries and proton exchange membrane fuel cells. (C) 2020 Elsevier Ltd. All rights reserved.