文献类型：期刊文献

英文题名：Recovered Carbon from Coal Gasification Fine Slag as Electrocatalyst for Oxygen Reduction Reaction and Zinc-Air Battery

作者：Guo, Qinghua[1];Huang, Yuchen[1];Gong, Yan[1];Zhuang, Xiaodong[2];Richter, Andreas[3];Yu, Guangsuo[1,4]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai Key Lab Elect Insulat & Thermal Ageing, State Key Lab Met Matrix Composites,Mesoentropy M, Shanghai 200240, Peoples R China;[3]Tech Univ Bergakad Freiberg, Inst Energy Proc Engn & Chem Engn, Fuchsmuhlenweg 9, D-09599 Freiberg, Germany;[4]Ningxia Univ, State Key Lab High Efficiency Coal Utilizat & Gre, Yinchuan 750021, Ningxia, Peoples R China

年份：2021

卷号：9

期号：4

外文期刊名：ENERGY TECHNOLOGY

收录：;EI(收录号：20210809950977);WOS:【SCI-EXPANDED(收录号:WOS:000618961000001)】；

基金：This work was supported by the National Key R&D Program of China (2017YFB0602404) and National Natural Science Foundation of China (21761132034). X.Z. is thankful for the financial support from the NSFC Excellent Young Scientists Fund (51722304), NSFC (21720102002, 51973114, 51811530013), Shanghai Pujiang Talent Program (18PJ1406100), and SMSTC (19JC412600).

语种：英文

外文关键词：coal gasification; fine slag; oxygen reduction reaction; zinc– air batteries

摘要：The coal gasification industry produces a large amount of coarse and fine slag. Such slag, which is composed mainly of carbon residues and inorganic species, e.g., silicon, calcium, magnesium, and aluminum, becomes a tough problem because of the environmental concerns and high reusage cost. Benefiting from the carbon-rich feature, such cheap byproducts of the coal gasification industry can be used as precursors to prepare porous carbons for energy conversion and storage. Herein, new porous carbons are prepared by treating carbon-rich fine slag by direct acid etching and ammonia activation. The oxygen reduction reaction performance of as-developed porous carbons as electrocatalysts is evaluated in alkaline media. Then, such porous carbons are further utilized as air cathodes for a zinc-air battery and reach a power density of 88 mW cm(-2) at the current density of 154.9 mA cm(-2). All these results indicate that fine slag, a byproduct of the coal gasification industry, has a great potential to be reused as a high-value electrocatalyst and electrode for energy conversion and storage.