2021
DOI: 10.1002/smll.202007557
|View full text |Cite
|
Sign up to set email alerts
|

Multi‐Phase Heterostructure of CoNiP/CoxP for Enhanced Hydrogen Evolution Under Alkaline and Seawater Conditions by Promoting H2O Dissociation

Abstract: Hydrogen evolution reaction (HER) is a key step for electrochemical energy conversion and storage. Developing well defined nanostructures as noble‐metal‐free electrocatalysts for HER is promising for the application of hydrogen technology. Herein, it is reported that 3D porous hierarchical CoNiP/CoxP multi‐phase heterostructure on Ni foam via an electrodeposition method followed by phosphorization exhibits ultra‐highly catalytic activity for HER. The optimized CoNiP/CoxP multi‐phase heterostructure achieves an… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

1
68
0

Year Published

2021
2021
2023
2023

Publication Types

Select...
7
1

Relationship

2
6

Authors

Journals

citations
Cited by 115 publications
(69 citation statements)
references
References 75 publications
(50 reference statements)
1
68
0
Order By: Relevance
“…As for the rate‐determining step of HER, the Tafel slopes of Volmer reaction, Heyrovsky reaction, and Tafel reaction are 120, 40, and 30 mV dec −1 , respectively. [ 59 ] As illustrated in Figure 6 a, the Tafel slope of MoS 2 @Ni(Mn)VO X is perceptibly smaller than that of NF, MoS 2 @NF, NiVO X , MoS 2 @NiVO X , and Ni(Mn)VO X . The small Tafel slope implies that the current density raises rapidly with the increase in overpotential, which indicates that the material has the fast conversion efficiency in HER.…”
Section: Resultsmentioning
confidence: 99%
“…As for the rate‐determining step of HER, the Tafel slopes of Volmer reaction, Heyrovsky reaction, and Tafel reaction are 120, 40, and 30 mV dec −1 , respectively. [ 59 ] As illustrated in Figure 6 a, the Tafel slope of MoS 2 @Ni(Mn)VO X is perceptibly smaller than that of NF, MoS 2 @NF, NiVO X , MoS 2 @NiVO X , and Ni(Mn)VO X . The small Tafel slope implies that the current density raises rapidly with the increase in overpotential, which indicates that the material has the fast conversion efficiency in HER.…”
Section: Resultsmentioning
confidence: 99%
“…According to the D-band theory, shifting away from the Fermi level (down-shifting of the D-band center) mainly contributes to higher occupation of the anti-bonding states of catalysts, hence a weaker adsorption. 7 As shown in Fig. 4h, the increased valence band maximum indicates that ΔG of electrocatalysts after transition metal doping becomes smaller, thus bene ting for the desorption of intermediate and hydrogen.…”
Section: Ni 2p and N 1s Indicate The Electrons Transfer From Ni To N Which Leads To The Conversion Of Ni + To Ni 2+ Onmentioning
confidence: 85%
“…5,6 Hydrogen evolution reaction (HER) provides a promising path to generate high-purity hydrogen toward energy and environmental sustainability. 7 Currently, one of the challenging issues in HER is to explore earth-abundant, long-term available, corrosion resistant, and e cient electrocatalysts for the practical application of hydrogen-energy technology. 8 Commercial noble metals (such as Pt and Ru) are the most remarkable HER electrocatalysts due to their unique electronic properties, low Gibbs free energy for desorption and adsorption of hydrogen and low energy barrier for splitting water molecules.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Researchers have devoted great effort to design effective electrocatalysts for promoting the active sites and Volmer step reaction in alkali water splitting using H + (proton) on the surface of the catalyst. 8,[34][35][36][37] For example, Zhang and co-workers presented the in situ surface reconstruction of a TiO 2 @CoCH composite which accelerates the HER kinetics by activating the surface and boosting the electrochemical performance in alkali media. 34 Liu et al established a multiphase CoNiP/Co x P heterostructure with unique kinetics helpful to enhance the water dissociation at the heterointerface and boost the hydrogen production.…”
Section: Introductionmentioning
confidence: 99%