title: Atomically isolated nickel species anchored on graphitized carbon for efficient hydrogen evolution electrocatalysis.
abstract: Hydrogen production through electrochemical process is at the heart of key renewable energy technologies including water splitting and hydrogen fuel cells. Despite tremendous efforts, exploring cheap, efficient and durable electrocatalysts for hydrogen evolution still remains as a great challenge. Here we synthesize a nickel-carbon-based catalyst, from carbonization of metal-organic frameworks, to replace currently best-known platinum-based materials for electrocatalytic hydrogen evolution. This nickel-carbon-based catalyst can be activated to obtain isolated nickel atoms on the graphitic carbon support when applying electrochemical potential, exhibiting highly efficient hydrogen evolution performance with high exchange current density of 1.2 mA cm(-2) and impressive durability. This work may enable new opportunities for designing and tuning properties of electrocatalysts at atomic scale for large-scale water electrolysis.
authors: School of Natural Sciences, Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, QLD 4111, Australia.|State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
authors: Lili
authors: L
authors: Fan
authors: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors: Peng Fei
authors: PF
authors: Liu
authors: School of Natural Sciences, Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, QLD 4111, Australia.
authors: Xuecheng
authors: X
authors: Yan
authors: Institute of Physics, Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors: Lin
authors: L
authors: Gu
authors: Institute of Physics, Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors: Zhen Zhong
authors: ZZ
authors: Yang
authors: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors: Hua Gui
authors: HG
authors: Yang
authors: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
authors: Shilun
authors: S
authors: Qiu
authors: School of Natural Sciences, Queensland Micro- and Nanotechnology Centre, Griffith University, Brisbane, QLD 4111, Australia.
authors: Xiangdong
authors: X
authors: Yao