Phase-dependent electrocatalytic activity of colloidally synthesized WP and α-WP<sub>2</sub> electrocatalysts for hydrogen evolution reaction

Nkabinde, Siyabonga S.; Mwonga, Patrick V.; Mpelane, Siyasanga; Ndala, Zakhele B.; Kolokoto, Tshwarela; Shumbula, Ndivhuwo P.; Nchoe, Obakeng B.; Maphanga, Rapela R.; Ozoemena, Kenneth I.; Mubiayi, Kalenga P.; Moloto, Nosipho

doi:10.1039/d1nj00927c

Cited by 11 publications

(3 citation statements)

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“…[28] Further theoretical analysis suggested that Ni 5 P 4 possesses a higher HER electrocatalytic performance than Ni 2 P, which could be attributed to the longer NiP bond length of Ni 4 P 5 compared with that of Ni 2 P, resulting in facilitated hydrogen adsorption (Figure 3h,i). In addition, the P-rich α-WP 2 catalysts also demonstrated higher hydrogen adsorption energy than the P-poor WP (Figure 3j), which can be ascribed to the accelerated capture of positively charged H + by the more negatively charged P. [29] Nevertheless, excessive P content also leads to some negative effects on the HER electrocatalytic activity. For instance, an in-depth analysis of the Co 2 P structure revealed that the continuous increase in P content leads to a gradual decrease in the atomic wave function overlap between M and P, which induces a strong P-H interaction, thus failing to achieve the expected HER electrocatalytic activity.…”

Section: Pivotal Effect Of Phosphorusmentioning

confidence: 97%

“…[ 28 ] Further theoretical analysis suggested that Ni 5 P 4 possesses a higher HER electrocatalytic performance than Ni 2 P, which could be attributed to the longer NiP bond length of Ni 4 P 5 compared with that of Ni 2 P, resulting in facilitated hydrogen adsorption (Figure 3h,i). In addition, the P‐rich α‐WP 2 catalysts also demonstrated higher hydrogen adsorption energy than the P‐poor WP (Figure 3j), which can be ascribed to the accelerated capture of positively charged H + by the more negatively charged P. [ 29 ]…”

Section: Her Electrocatalytic Activity Origin Of Tmpsmentioning

confidence: 99%

mentioning

confidence: 99%

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Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Liu

Yang

et al. 2022

Adv Funct Materials

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Developing efficient and inexpensive electrocatalysts for the hydrogen evolution reaction (HER) is critical to the commercial viability of electrochemical clean energy technologies. Transition metal phosphides (TMPs), with the merits of abundant reserves, unique structure, tunable composition, and high electronic conductivity, are recognized as attractive HER catalytic materials. Nevertheless, the HER electrocatalytic activity of TMPs is still limited by various thorough issues and inherent performance bottlenecks. In this review, these issues are carefully sorted, and the corresponding reasonable explanations and solutions are elucidated on the basis of the HER catalytic activity origins of TMPs. Subsequently, highly targeted multiscale strategies to improve the HER performance of TMPs are comprehensively presented. Additionally, critical scientific issues for constructing high‐efficiency TMP‐based electrocatalysts are proposed. Finally, the HER reaction process, catalytic mechanism research, TMP‐based catalyst construction, and their application expansion are mentioned as challenges and future directions for this research field. Expectedly, this review offers professional and targeted guidelines for the rational design and practical application of TMP‐based HER catalysts.

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Section: Pivotal Effect Of Phosphorusmentioning

confidence: 97%

Section: Her Electrocatalytic Activity Origin Of Tmpsmentioning

confidence: 99%

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Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Liu

Yang

et al. 2022

Adv Funct Materials

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Fabrication of triangular Cu3P nanorods on Cu nanosheets as electrocatalyst for boosted electrocatalytic water splitting

Dang

Xie

2022

J. Cent. South Univ.

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Tungsten pnictides for water electrolysis: advances and perspectives

Kang,

Tan,

Han

et al. 2024

Tungsten

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Hydrogen fuel is recognized as a promising energy carrier for the sustainable development of global energy system and the green hydrogen production via water electrolysis attracts great interest. The development of cost-effective electrocatalysts for water electrolysis is important for enhancing green hydrogen production efficiency. Recently, tungsten pnictides (phosphides and nitrides) have emerged as promising catalysts for water electrolysis, and efficient tungsten pnictide-based catalysts with different nanostructures, compositions, and surface chemical properties have been developed. In this review, recent progress in the design of tungsten pnictide-based electrocatalysts for water electrolysis is comprehensively analyzed. The synthesis of tungsten pnictide-based electrocatalysts are discussed briefly. Then, current achievements in developing efficient tungsten pnictide electrocatalysts for water electrolysis are detailed, and four key catalyst design strategies (i.e., nanostructure control, heteroatom doping, defect engineering, and heterostructure design) are outlined. The physicochemical properties-catalytic performance relationship of tungsten pnictide-based electrocatalysts is also discussed. At last, perspectives in this field are put forward for guiding further research on the design and application of high-performance tungsten pnictide-based electrocatalysts.

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Phase-dependent electrocatalytic activity of colloidally synthesized WP and α-WP₂ electrocatalysts for hydrogen evolution reaction

Abstract: Transition metal phosphides (TMPs) have emerged as efficient non-noble electrocatalysts for hydrogen evolution reaction (HER). However, the effect of their crystal phase on the electrocatalytic activity is rarely reported due...

Cited by 11 publications

References 53 publications

Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Fabrication of triangular Cu3P nanorods on Cu nanosheets as electrocatalyst for boosted electrocatalytic water splitting

Tungsten pnictides for water electrolysis: advances and perspectives

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Phase-dependent electrocatalytic activity of colloidally synthesized WP and α-WP2 electrocatalysts for hydrogen evolution reaction

Abstract: Transition metal phosphides (TMPs) have emerged as efficient non-noble electrocatalysts for hydrogen evolution reaction (HER). However, the effect of their crystal phase on the electrocatalytic activity is rarely reported due...

Cited by 11 publications

References 53 publications

Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Rational Design of Transition Metal Phosphide‐Based Electrocatalysts for Hydrogen Evolution

Fabrication of triangular Cu3P nanorods on Cu nanosheets as electrocatalyst for boosted electrocatalytic water splitting

Tungsten pnictides for water electrolysis: advances and perspectives

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Product

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Phase-dependent electrocatalytic activity of colloidally synthesized WP and α-WP₂ electrocatalysts for hydrogen evolution reaction