Phase controllable synthesis of Ni2+ post-modified CoP nanowire for enhanced oxygen evolution

Xiaotong Han, Chang Yu, Huawei Huang, Wei Guo, Changtai Zhao, Hongling Huang, Shaofeng Li, Zhibin Liu, Xinyi Tan, Zhanming Gao, Jinhe Yu, Jieshan Qiu

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Recently, tailor-made NiCo bimetallic phosphides hold a promising platform material in many fields such as catalysis and electrochemical energy storage and conversion. Typically, the traditional one-step phosphorization route offers limited phase control, with hexagonal phosphide phase structure (Ni2P type). Moreover, the phase component sensitively depends on the metal ratio to a great degree, posing great challenges to synthesize NiCo bimetallic phosphides with tuned composition and phase structure. Herein, we report a carbon encapsulated Ni2+ post-modified CoP nanowire (denoted as Ni[sbnd]CoP@C)with single orthorhombic CoP phase structure and tuned Ni doping content via a facile & novel in-situ isomorphous-substitution method. More importantly, no any phase separation occurs, also further achieving a high Ni doping content (57 at%)that is less realized previously. As an example application, the as-made Ni[sbnd]CoP@C nanowire exhibits excellent oxygen evolution reaction (OER)activity and stability, showing promising potential in the field of water splitting. The present novel strategy will pave the way for further phase controllable fabrication of bi/multi-metal-based materials in catalysis and energy storage & conversion fields.
Original languageEnglish (US)
Pages (from-to)136-143
Number of pages8
JournalNano Energy
Volume62
DOIs
StatePublished - Aug 1 2019
Externally publishedYes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Phase controllable synthesis of Ni2+ post-modified CoP nanowire for enhanced oxygen evolution'. Together they form a unique fingerprint.

Cite this