Synergistic electronic and morphological modulation on ternary Co1−xV xP nanoneedle arrays for hydrogen evolution reaction with large current density 具有协同电子结构和形貌调控功能的三元 Co1−xV xP纳米针阵列在大电流下的析氢性能研究

Yang，Mingyang1,2,3; Shang，Chaoqun4; Li，Feifei2; Liu，Chen3; Wang，Zhenyu1; Gu，Shuai1; Liu，Di2; Cao，Lujie1,2; Zhang，Junjun1; Lu，Zhouguang1; Pan，Hui2,5

2020

10.1007/s40843-020-1495-x

Science China-Materials   影响因子和分区

2095-8226

2199-4501

It is a great challenge to prepare non-noble metal electrocatalysts toward hydrogen evolution reaction (HER) with large current density. Synergistic electronic and morphological structures of the catalyst have been considered as an effective method to improve the catalytic performance, due to the enhanced intrinsic activity and enlarged accessible active sites. Herein, we present novel ternary CoVP nano-needle arrays with modulated electronic and morphological structures as an electrocatalyst for highly efficient HER in alkaline solution. The NF@CoVP catalyst shows a remarkable catalytic ability with low overpotentials of 46 and 226 mV at current densities of 10 and 400 mA cm, respectively, as well as a small Tafel slope and superior stability. Combining the experimental and computational study, the excellent catalytic performance was attributed to the improved physical and chemical properties (conductivity and surface activity), large active surface area, and fast reaction kinetics. Furthermore, the assembled Co-V based electrolyzer (NF@CoV-HNNs(+)||NF@CoVP(−)) delivers small full-cell voltages of 1.58, 1.75, and 1.92 V at 10, 100, and 300 mA cm, respectively. Our findings provide a systematic understanding on the V-incorporation strategy to promote highly efficient ternary electrocatalysts via synergistic control of morphology and electronic structures.

hydrogen evolution reaction modulated morphology and electronic structures overall water splitting ternary Co1−xVxP

SCI ; EI

中文

第一 ; 通讯

National Natural Science Foundation of China[21671096][21603094][21905180] ; Natural Science Foundation of Guangdong Province[2018B030322001][2018A030310225] ; Shenzhen Peacock Plan[KQTD2016022620054656] ; Shenzhen Key Laboratory Project[ZDSYS201603311013489] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20190809115413414] ; Science and Technology Development Fund from Macau SAR[FDCT-0102/2019/A2][FDCT-0035/2019/AGJ][FDCT-0154/2019/A3] ; University of Macau[MYRG2017-00027-FST][MYRG2018-00003-IAPME]

Materials Science

Materials Science, Multidisciplinary

WOS:000585996400002

SCIENCE PRESS

20204509449338

Cobalt compounds ; Hydrogen ; Catalyst activity ; Hydrogen evolution reaction ; Cobalt alloys ; Precious metals ; Electrocatalysts ; Slope stability ; Alkalinity ; Electrolysis ; Reaction kinetics ; Morphology

Roads and Streets:406.2 ; Precious Metals:547.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemistry, General:801.1 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

2-s2.0-85094871904

Scopus

1.Department of Materials Science and Engineering,Shenzhen Key Laboratory of Hydrogen Energy,Southern University of Science and Technology,Shenzhen,518055,China
2.Institute of Applied Physics and Materials Engineering,University of Macau,Macao
3.Shenzhen Key Laboratory of Polymer Science and Technology,College of Materials Science and Engineering,Shenzhen University,Shenzhen,518060,China
4.International Academy of Optoelectronics at Zhaoqing,South China Normal University,Zhaoqing,526060,China
5.Department of Physics and Chemistry,Faculty of Science and Technology,University of Macau,Macao

Yang，Mingyang,Shang，Chaoqun,Li，Feifei,等. Synergistic electronic and morphological modulation on ternary Co1−xV xP nanoneedle arrays for hydrogen evolution reaction with large current density 具有协同电子结构和形貌调控功能的三元 Co1−xV xP纳米针阵列在大电流下的析氢性能研究[J]. Science China-Materials,2020,64:880-891.

Yang，Mingyang.,Shang，Chaoqun.,Li，Feifei.,Liu，Chen.,Wang，Zhenyu.,...&Pan，Hui.(2020).Synergistic electronic and morphological modulation on ternary Co1−xV xP nanoneedle arrays for hydrogen evolution reaction with large current density 具有协同电子结构和形貌调控功能的三元 Co1−xV xP纳米针阵列在大电流下的析氢性能研究.Science China-Materials,64,880-891.

Yang，Mingyang,et al."Synergistic electronic and morphological modulation on ternary Co1−xV xP nanoneedle arrays for hydrogen evolution reaction with large current density 具有协同电子结构和形貌调控功能的三元 Co1−xV xP纳米针阵列在大电流下的析氢性能研究".Science China-Materials 64(2020):880-891.