文献类型：期刊文献

英文题名：Electronic optimization and modification of efficient Ir clusters embedded onto Ni-Mo-P for electrocatalytic oxygen evolution reaction

作者：Wei, Hehe[1,2];Li, Jing[3];Du, Peng[4];Zhang, Longtao[1,2];Su, Zixiang[1,2];Li, Hui[1,2];Lei, Ming[4];Gong, Xueqing[1,2];Huang, Kai[4]

机构：[1]East China Univ Sci & Technol, Ctr Comp 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]Chaohu Univ, Coll Chem & Mat Engn, Engn Technol Ctr, Dept Educ Anhui Prov, Chaohu 238024, Anhui, Peoples R China;[4]Beijing Univ Posts & Telecommun, Sch Sci, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

年份：2023

卷号：6

期号：1

外文期刊名：ADVANCED COMPOSITES AND HYBRID MATERIALS

收录：;EI(收录号：20230313385006);WOS:【SCI-EXPANDED(收录号:WOS:000912035800002)】；

基金：This study was supported by the National Natural Science Foundations of China (Grants 22102057 and 22203030), Shanghai Sailing Program (21YF1409400), and Key Projects of Natural Science Research in universities of Anhui Province (KJ2020A0675).

语种：英文

外文关键词：Ultrathin Ir clusters; Ni-Mo-P; Electrocatalytic water oxidation; Electronic structure; Nanosheets

摘要：The implementation of low-cost and efficient electrocatalysts for water oxidation is crucial for the development of industrial water electrolysis; however, they often suffer from inferior activity or poor stability. Herein, we demonstrated 0.7-nm iridium clusters embedded onto Ni-Mo-P (Ir-NMP) that exhibited an ultralow overpotential of 290 mV vs reversible hydrogen electrode (RHE) to reach the current density of 50 mA cm(-2) in 1 M KOH, together with low Tafel slope of 63.9 mV dec(-1), high mass activity of 2604 A g(Ir)(-1), and excellent catalytic stability with almost complete retention of activity within more than 30 h. According to characterizations and analyses, the interlaced crystalline and amorphous structure of Ni - Mo - P made homogeneous embedment of ultrathin Ir clusters onto NMP substrate, and the introduction of Ir clusters enabled the optimization of electronic structure for Ni and Mo species in NMP, which were available to the highly efficient and durable Ir-NMP electrocatalyst for OER.