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author：

Yuan, Ling (Yuan, Ling.) [1] | Liu, Song (Liu, Song.) [2] | Xu, Shichen (Xu, Shichen.) [3] | Yang, Xiaofei (Yang, Xiaofei.) [4] | Bian, Jialin (Bian, Jialin.) [5] | Lv, Cuncai (Lv, Cuncai.) [6] | Yu, Zhiyang (Yu, Zhiyang.) [7] | He, Tong (He, Tong.) [8] | Huang, Zhipeng (Huang, Zhipeng.) [9] | Boukhvalov, Danil W. (Boukhvalov, Danil W..) [10] | Cheng, Chuanwei (Cheng, Chuanwei.) [11] | Huang, Yanqiang (Huang, Yanqiang.) [12] | Zhang, Chi (Zhang, Chi.) [13]

Indexed by：

EI

Abstract：

The　sluggish　water　dissociation　(Volmer　step)　is　a　rate-limiting　step　slowing　down　alkaline　hydrogen　evolution　reaction　(HER),　and　therefore　hinders　the　efficient　industrial　production　of　clean　hydrogen　resource.　In　this　work,　we　report　that　the　Volmer　step　can　be　facilitated　by　in-situ　surface　reconstruction　on　a　composite　between　cobalt　carbonate　hydroxide　and　titanium　oxide　(TiO2@CoCH),　and　the　resultant　activated　structure　turns　to　be　a　highly　efficient　electrocatalyst　for　alkaline　HER.　Experimental　characterization　and　density　functional　theory　calculation　evidence　that　under　HER　potential　the　smooth　TiO2@CoCH　surface　is　roughened　and　Co　interstitial　defects　in　TiO2　are　formed,　which　are　energetically　favorable　for　Volmer　step.　The　activated　composite　exhibits　an　overpotential　of　99　±　6　mV　for　a　current　density　of　20　mA　cm−2　and　187　±　21　mV　for　100　mA　cm−2,　suggesting　that　TiO2@CoCH　is　one　of　promising　non-precious　metal　electrocatalysts　for　HER　in　alkaline　media.　©　2021　Elsevier　Ltd

Keyword：

Cobalt compounds Composite structures Density functional theory Electrocatalysts Energy resources Hydrogen evolution reaction Oxide minerals Surface reconstruction Titanium dioxide

Community：

  • [ 1 ] [Yuan, Ling]School of Chemical Science and Engineering, Tongji University, Shanghai; 200092, China
  • [ 2 ] [Liu, Song]CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian; 116023, China
  • [ 3 ] [Liu, Song]University of Chinese Academy of Sciences, Beijing; 100049, China
  • [ 4 ] [Xu, Shichen]School of Chemical Science and Engineering, Tongji University, Shanghai; 200092, China
  • [ 5 ] [Yang, Xiaofei]Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Science, Nanjing Forestry University, Nanjing; 210037, China
  • [ 6 ] [Bian, Jialin]Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physical Science and Engineering, Tongji University, Shanghai; 200092, China
  • [ 7 ] [Lv, Cuncai]Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province, Hebei Key Lab of Optic-Electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding; 071002, China
  • [ 8 ] [Yu, Zhiyang]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350002, China
  • [ 9 ] [He, Tong]School of Chemical Science and Engineering, Tongji University, Shanghai; 200092, China
  • [ 10 ] [Huang, Zhipeng]School of Chemical Science and Engineering, Tongji University, Shanghai; 200092, China
  • [ 11 ] [Boukhvalov, Danil W.]Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Science, Nanjing Forestry University, Nanjing; 210037, China
  • [ 12 ] [Boukhvalov, Danil W.]Institute of Physics and Technology, Ural Federal University, Mira Str. 19, Yekaterinburg; 620002, Russia
  • [ 13 ] [Cheng, Chuanwei]Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physical Science and Engineering, Tongji University, Shanghai; 200092, China
  • [ 14 ] [Huang, Yanqiang]CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian; 116023, China
  • [ 15 ] [Zhang, Chi]School of Chemical Science and Engineering, Tongji University, Shanghai; 200092, China

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Source ：

Nano Energy

ISSN： 2211-2855

Year： 2021

Volume： 82

1 9 . 0 6 9

JCR@2021

1 6 . 8 0 0

JCR@2023

ESI HC Threshold：142

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 63

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

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