Self-supported vanadium-incorporated cobalt phosphide as a highly efficient bifunctional electrocatalyst for water splitting
- Authors
- Han, HyukSu; Yi, Feng; Choi, Seunggun; Kim, Jungin; Kwon, Jiseok; Park, Keemin; Song, Taeseup
- Issue Date
- Dec-2020
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- CoP nanosheets; Water splitting; Bifunctional electrocatalyst; Hydrogen evolution reaction (HER); Oxygen evolution reaction (OER)
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, v.846, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ALLOYS AND COMPOUNDS
- Volume
- 846
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/8182
- DOI
- 10.1016/j.jallcom.2020.156350
- ISSN
- 0925-8388
- Abstract
- The development of bifunctional electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) has recently attracted significant attention. Transition metal-based electrocatalysts have demonstrated a highly promising catalytic performance in electrochemical HER or OER. Moreover, their electrocatalytic performance can be further improved using a self-supported structure of the electrocatalyst, owing to strong physicochemical contact between the catalyst and current collector. In this context, we propose vanadium-incorporated cobalt phosphide (CoVP) self-supported catalysts on carbon cloth (CoVP@CC) as highly efficient bifunctional electrocatalysts for alkaline HER and OER. In CoVP@CC, V plays a crucial role in modulating the surface electronic structure of the self-supported CoP nanosheets, leading to excellent catalytic activity in both HER and OER. The self-supported CoVP@CC demonstrates a promising overall water-splitting performance, requiring only 1.61 V to afford a current density of 10 mA cm−2.
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