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Title: S-Doped MoP Nanoporous Layer Toward High-Efficiency Hydrogen Evolution in pH-Universal Electrolyte

Journal Article · · ACS Catalysis
 [1];  [2];  [3]; ORCiD logo [4];  [1];  [5];  [4];  [6]; ORCiD logo [3]; ORCiD logo [5];  [4]; ORCiD logo [1]
  1. Univ. of Central Florida, Orlando, FL (United States)
  2. Indian Institute of Technology Indore, Madhya Pradesh (India); Florida A&M Univ. and Florida State Univ., Tallahassee, FL (United States)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Florida A&M Univ. and Florida State Univ., Tallahassee, FL (United States)
  5. Oregon State Univ., Corvallis, OR (United States)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)

In this study, we report a non-precious metal catalyst for high-efficiency hydrogen evolution reaction (HER). A self-organized S-doped MoP nanoporous layer (S-MoP NPL) is achieved through a facile electrochemical anodic treatment and a two-step chemical vapor deposition process, which can be directly used as a binder-free catalyst for HER in pH-universal electrolytes. S-MoP NPL exhibits excellent HER activity with a low overpotential of 86 mV at 10 mA cm-1 and low Tafel slope of 34 mV dec-1 in 0.5 M H2SO4 electrolyte. Moreover, S-MoP NPL also shows high HER performance in basic and neutral electrolytes. First principle based density functional theory (DFT) calculations were performed to support our experiment. The present DFT calculations show that the H2 formation (via Volmer-Heyrovsky mechanism) from the reaction of a metal (Mo) absorbed hydride with a solvated proton is favored over S-MoP than MoS2. Both experimental and computational studies demonstrate that the extraordinary HER activity and stability performance displayed by a MoP catalyst can be enhanced by S-doping, opening up a promising paradigm for the rational design of high-performance non-precious metal catalyst for hydrogen generation.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
University of Central Florida; Florida State University; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC05-76RL01830
OSTI ID:
1493917
Alternate ID(s):
OSTI ID: 1494911
Report Number(s):
PNNL-SA-139297; 149193
Journal Information:
ACS Catalysis, Vol. 9, Issue 1; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 131 works
Citation information provided by
Web of Science

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Cited By (9)

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Bimetallic metal–organic framework-derived MoFe-PC microspheres for electrocatalytic ammonia synthesis under ambient conditions journal January 2020
Cerium and nitrogen doped CoP nanorod arrays for hydrogen evolution in all pH conditions journal January 2019
Regulating the Electronic Structure of CoP Nanosheets by O Incorporation for High‐Efficiency Electrochemical Overall Water Splitting journal December 2019
Dual tuning of nickel sulfide nanoflake array electrocatalyst through nitrogen doping and carbon coating for efficient and stable water splitting journal January 2019
N-doped Mo2C nanoblock for efficient hydrogen evolution reaction journal May 2019
Stable Fe 2 P 2 S 6 Nanocrystal Catalyst for High‐Efficiency Water Electrolysis journal November 2019
Hierarchically Porous W‐Doped CoP Nanoflake Arrays as Highly Efficient and Stable Electrocatalyst for pH‐Universal Hydrogen Evolution journal June 2019
Ultrasmall MoP encapsulated in nitrogen-doped carbon hybrid frameworks for highly efficient hydrogen evolution reaction in both acid and alkaline solutions journal January 2019