Cited by 148Electrocatalysts for Energy ConversionAdvanced Photocatalysis TechniquesCO2 Reduction Techniques and Catalysts

Cobalt Phosphides Nanocrystals Encapsulated by P‐Doped Carbon and Married with P‐Doped Graphene for Overall Water Splitting

Yang, Jing, Guo, Donghua, Zhao, Shulin, Lin, Yue, Yang, Rui, Xu, Dongdong, Shi, Naien, Zhang, Xiaoshu +4 more·2019·Small

Abstract

As one class of important functional materials, transition metal phosphides (TMPs) nanostructures show promising applications in catalysis and energy storage fields. Although great progress has been achieved, phase-controlled synthesis of cobalt phosphides nanocrystals or related nanohybrids remains a challenge, and their use in overall water splitting (OWS) is not systematically studied. Herein, three kinds of cobalt phosphides nanocrystals encapsulated by P-doped carbon (PC) and married with P-doped graphene (PG) nanohybrids, including CoP@PC/PG, CoP-Co 2 P@PC/PG, and Co 2 P@PC/PG, are obtained through controllable thermal conversion of presynthesized supramolecular gels that contain cobalt salt, phytic acid, and graphene oxides at proper temperature under Ar/H 2 atmosphere. Among them, the mixed-phase CoP-Co 2 P@PC/PG nanohybrids manifest high electrocatalytic activity toward both hydrogen and oxygen evolution in alkaline media. Remarkably, using them as bifunctional catalysts, the fabricated CoP-Co 2 P@PC/PG||CoP-Co 2 P@PC/PG electrolyzer only needs a cell voltage of 1.567 V for driving OWS to reach the current density at 10 mA cm -2 , superior to their pure-phase counterparts and recently reported bifunctional catalysts based devices. Also, such a CoP-Co 2 P@PC/PG||CoP-Co 2 P@PC/PG device exhibits outstanding stability for OWS. This work may shed some light on optimizing TMPs nanostructures based on phase engineering, and promote their applications in OWS or other renewa…

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Crossref · 10.1002/smll.201804546

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Authors
Yang, J., Guo, D., Zhao, S., Lin, Y., Yang, R., Xu, D., Shi, N., Zhang, X., Lu, L., Lan, Y., Bao, J., & Han, M.
Affiliations
  • Nanjing Normal University (CN)
  • University of Science and Technology of China (CN)
  • Nanjing University of Posts and Telecommunications (CN)
Corresponding author
  • Lin, Yue
  • Han, Min
Venue
Small
Publisher
Wiley
Published
2019-01-28
Volume
15
Issue
10
Pages
e1804546-e1804546
ISSN
  • 1613-6810 (ISSN-L)
  • 1613-6829
OpenAlex
W2913471286
Cited by
148
References
60
Citations by year
2026: 3 · 2025: 13 · 2024: 19 · 2023: 24 · 2022: 19 · 2021: 32 · 2020: 27 · 2019: 11
FWCI
4.73
Type
journal article
Language
en
Open access
closed
Locations
  • Small (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (21671106, 11874334, 21533012, 21471082, 21501095)
  • Natural Science Foundation of Anhui Province
  • State Key Laboratory of Coordination Chemistry
  • National Laboratory of Solid State Microstructures, Nanjing University
  • Nanjing University
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
Keywords
cobalt phosphide, transition metal phosphides, p-doped graphene, hybrid nanostructures, overall water splitting, bifunctional electrocatalysts, hydrogen evolution reaction, oxygen evolution reaction, phase engineering, supramolecular gels, phytic acid, graphene oxide, thermal conversion, electrolyzer, alkaline water electrolysis

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