Simultaneous heterostructure engineering and Mn doping modulation of Ni_(2)P nanosheet arrays for enhanced electrocatalytic water splitting

作     者：Yuanzhi Luo Pan Wang Sisi Wu Gaixia Zhang Shuhui Sun Hariprasad Ranganathan Zhicong Shi 罗远志;王攀;吴思思;张改霞;孙书会;Hariprasad Ranganathan;施志聪

作者机构：Institute of BatteriesSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China The Key Laboratory of Fuel Cell Technology of Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641China énergie Matériaux Télécommunications Research CentreInstitut National de la Recherche Scientifique(INRS)VarennesQuébecJ3X 1S2Canada 

基　　金：supported by the Department of Science and Technology of Guangdong Province(2019A050510043) the Department of Science and Technology of Zhuhai City(ZH22017001200059PWC) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第7期

页      码：1814-1824页

摘      要：Efficient,low-cost,and stable electrocatalysts for water splitting are highly ***,three-dimensional(3D)Ni_(2)P nanosheet arrays were fabricated and simultaneously modulated by heterostructure engineering and Mn doping(Mn-doped Ni_(2)O_(3)/Ni_(2)P and Mn-doped Ni_(x)S_(y)/Ni_(2)P)via a facile hydrothermal reaction and subsequent phosphorization and *** to the Mn doping,synergistic effect in the heterostructures,and abundantly exposed active sites from the 3D-nanosheet arrays,Mn-doped Ni_(2)O_(3)/Ni_(2)P and Mn-doped Ni_(x)S_(y)/Ni_(2)P exhibit excellent properties for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),*** former achieves an excellent current density of-10 mA cm^(-2) at a low overpotential of 104 mV for HER,while the latter attains 100 mA cm^(-2) for OER at an ultralow overpotential of 290 mV and exhibits superior stability at 50 mA cm^(-2) for 160 ***,the Mndoped Ni_(2)O_(3)/Ni_(2)P//Mn-doped Ni_(x)S_(y)/Ni_(2)P couple show high overall-water-splitting activity with a cell voltage of 1.65 V at 10 mA cm^(-2) and outstanding durability at 50 mA cm^(-2) for 120 h in an alkaline *** work presents an effective strategy to design and synthesize low-cost and highly active non-noble metal electrocatalysts for overall water splitting through the simultaneous application of heterostructure engineering,foreign-metal-atom doping,and a 3Dnanoarray *** strategy brings a paradigm shift toward the mass production of low-cost non-noble metal electrocatalysts for renewable energy devices.

主 题 词：water splitting Ni_(2)P heterostructure Mn doping three-dimensional nanosheet arrays 

学科分类：081702[081702] 081705[081705] 07[理学] 070205[070205] 08[工学] 0817[工学-轻工类] 080501[080501] 080502[080502] 0805[工学-能源动力学] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s40843-021-1953-5

馆 藏 号：203109446...