文献类型：期刊文献

英文题名：Atomically dispersed palladium supported on nitrogen-doped mesoporous carbon for drastic electrocatalytic hydrogen evolution

作者：Wei, Hehe[1,2,3];Su, Zixiang[1,2];Deng, Bohan[3];Wu, Hui[3];Li, Hui[1,2];Zhang, Longtao[1,2];Ge, Binghui[4];Li, Jing[5,6];Gong, Xueqing[1,2]

机构：[1]East China Univ Sci & Technol, Ctr Computat Chem, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Inst Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China;[4]Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Anhui, Peoples R China;[5]Chaohu Univ, Engn Technol Ctr, Dept Educ Anhui Prov, Chaohu 238024, Anhui, Peoples R China;[6]Chaohu Univ, Coll Chem & Mat Engn, Chaohu 238024, Anhui, Peoples R China

年份：2022

卷号：47

期号：93

起止页码：39319

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20224313000850);WOS:【SCI-EXPANDED(收录号:WOS:000883827500002)】；

语种：英文

外文关键词：Atomically dispersed Pd; Electrocatalysis; Hydrogen evolution; Mass activity

摘要：The electrocatalysis of water to hydrogen is expected to play an essential and significant role in the development of future electrochemical energy conversion and storage tech-nologies, together with the exploration of green energy. However, the high cost of noble metal catalysts remains a key challenge and it still requires further investigations to fabricate high mass activity and stable electrocatalysts. Herein, we report a facile and economical approach to achieve atomically dispersed palladium on the nitrogen-doped mesoporous carbon matrix (Pd1/NMC) as the electrocatalyst for hydrogen evolution, which exhibits an overpotential of 37 and 118 mV at the current density of 10 and 100 mA cm-2, respectively, superior to the commercial platinum/carbon (Pt/C) and palla-dium/carbon (Pd/C) catalysts. Moreover, the mass activity of the Pd1/NMC catalyst sur-passes that of Pt/C and Pd/C at 100 mV versus RHE in HER. Systematic characterizations demonstrate that the Pd atoms are atomically dispersed on the surface of NMC and sta-bilized by active nitrogen sites, inducing the isolated Pd atoms to form a favorable bivalent oxidation state. This method provides an atomic-level insights into preparing superior single-atom catalysts for energy-related applications and devices. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.