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Title: Highly Efficient Hydrogen Evolution from a Mesoporous Hybrid of Nickel Phosphide Nanoparticles Anchored on Cobalt Phosphosulfide/Phosphide Nanosheet Arrays

Journal Article · · Small
ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [4];  [4];  [3];  [4];  [4];  [5]
  1. Key Laboratory of Low‐Dimensional Quantum Structures and Quantum Control of Ministry of Education School of Physics and Electronics Hunan Normal University Changsha 410081 China, Department of Physics and TcSUH University of Houston Houston TX 77204 USA
  2. Department of Chemistry Rice University Houston TX 77005 USA
  3. College of Physical Science and Technology Central China Normal University Wuhan 430079 China
  4. Department of Physics and TcSUH University of Houston Houston TX 77204 USA
  5. Key Laboratory of Low‐Dimensional Quantum Structures and Quantum Control of Ministry of Education School of Physics and Electronics Hunan Normal University Changsha 410081 China
+ Show Author Affiliations

Abstract Facile design of low‐cost and high‐efficiency catalysts with earth‐abundant and cheap materials is desirable to replace platinum (Pt) for the hydrogen evolution reaction (HER) in water splitting, but the development of such HER catalysts with Pt‐like activity using simple strategies remains challenging. A mesoporous hybrid catalyst of nickel phosphides nanoparticles and cobalt phosphosulfide/phosphide (CoS|Ni|P) nanosheet arrays for HER is reported here, which is developed by a facile three‐step approach consisting of electrodeposition, thermal sulfurization, and phosphorization. This hybrid catalyst is highly robust and stable in acid for HER, and is distinguished by very low overpotentials of 41, 88, and 150 mV to achieve 10, 100, and 1000 mA cm −2 , respectively, as well as a small Tafel slope (45.2 mV dec −1 ), and a large exchange current density (964 µA cm −2 ). It is among the most efficient earth‐abundant catalysts reported thus far for HER. More importantly, this electrocatalyst has electrochemical durability over 20 h under a wide range of current densities (up to 1 A cm −2 ) in acidic conditions, as well as very high turnover frequencies of 0.40 and 1.26 H 2 s −1 at overpotentials of 75 and 100 mV, respectively, showing that it has great potential for practical applications in large‐scale water electrolysis.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐SC0010831
OSTI ID:
1490762
Journal Information:
Small, Journal Name: Small Vol. 15 Journal Issue: 6; ISSN 1613-6810
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 101 works
Citation information provided by
Web of Science

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