Enhanced Hydrogen Evolution Reaction Performance of NiCoP by Filling Oxygen Vacancies by Phosphorus in Thin-Coating CeO.

Clicks: 316
ID: 54229
2019
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #118 of 899 articles by views in ACS applied materials & interfaces

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 899 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
A series of NiCoP-based electrocatalysts, which were wrapped by CeO whose oxygen vacancies (V) are partially filled with phosphorus atoms (named as NiCoP/PFVo-CeO, where refers to the consumption of NaHPO·HO), have been fabricated to improve the electrocatalytic reactivity of NiCoP toward hydrogen evolution in alkaline solution. In the novel catalysts, the P atoms fill the oxygen vacancies, elevate the chemical valence state of Ni and Co, and increase the hydride acceptors, which reinforcing the promoting effect of CeO in the hydrogen evolution reaction (HER). Moreover, the negatively charged P atoms capture the positively charged protons more easily, benefiting the Volmer step during HER. Furthermore, the synergistic effect between oxygen vacancies and the filled P atoms accelerates the migration rate of electrons/ions and increases the electrochemical active area. All of the above are advantageous to the hydrogen evolution of NiCoP/PFVo-CeO in alkaline electrolyte. As a result, the overpotential as low as 33.6 mV is achieved for NiCoP/PFVo-CeO in alkaline media to drive a current density of 10 mA cm. The reactivity is superior to that of Pt/C at a large current density along with a Tafel slope of 61.24 mV dec and long-term durability, which giving a new technology for efficient transition-metal catalyst candidates toward HER in alkaline solution.
Reference Key
wang2019enhancedacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wang, Xixi;Sun, Chen;He, Fang;Liu, Enzuo;He, Chunnian;Shi, Chunsheng;Li, Jiajun;Sha, Junwei;Ji, Shuaihua;Ma, Liying;Zhao, Naiqin;
Journal ACS applied materials & interfaces
Year 2019
DOI
10.1021/acsami.9b07975
URL
Keywords
hydrogen evolution reaction oxygen vacancies ceo nicop p-filling

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.