One-dimensional CO9S8-V3S4 heterojunctions as bifunctional electrocatalysts for highly efficient overall water splitting

Duan, Xue; Jiao, Yanqing; Yang, Ganceng; Yan, Haijing; Wu, Aiping; Guo, Dezheng; Wang, Yu; Tian, Chungui; Fu, Honggang

doi:10.1007/s40843-020-1541-9

Cited by 43 publications

(30 citation statements)

References 51 publications

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“…8) show the presence of Co, P and O elements both in CoP2/CC and V-CoP2/CC, apart from the emergence of V element in V-CoP2/CC. The O comes from the superficial oxidation of phosphides exposed in air 38 . As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Vanadium‐Incorporated CoP₂ with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Wang

Jiao

et al. 2022

Angewandte Chemie

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Proton exchange membrane water electrolyzer (PEMWE) in acidic media is a hopeful scenario for hydrogen production by using renewable energy sources, but the grand challenge lies in substituting active and stable noble-metal catalysts. Herein, a robust electrocatalyst of V-CoP2 porous nanowires arranged on carbon cloth is successfully fabricated via incorporating vanadium into CoP2 lattice. Structural characterizations and theoretical analysis indicate that lattice expansion of CoP2 caused by V incorporation results in the upshift of d-band center, which is conducive to hydrogen adsorption for boosting HER activity. Besides, V promotes surface reconstruction to generate a thicker Co3O4 layer that enhances acid-corrosion resistance and optimizes the adsorption of water and oxygen-containing species, thus improving OER activity and stability. Accordingly, it presents a superior acidic overall water splitting activity (1.47 V@10 mA cm -2 ) over Pt-C/CC||RuO2/CC, and remarkable stability. This work proposes a new route to design efficient electrocatalysts via lattice engineering for PEMWE.

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Section: Resultsmentioning

confidence: 99%

Vanadium‐Incorporated CoP₂ with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Wang

Jiao

et al. 2022

Angewandte Chemie

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“…It has been established that TMICs have superior electrocatalytic activities toward HER, OER, CO 2 RR, and small-molecule oxidation. [95][96][97] Due to their intrinsic defects, TMICs exhibit superior electrocatalytic activity. In case of transition metal nitrides (TMNs), the d-band centers and densities of states (DOS) of the d orbitals enable noble-metallike behavior [98][99][100] in electrocatalysis and ensure good adsorption of reactants at the surfaces of TMNs.…”

Section: Transition Metal Interstitial Compounds (Tmics)mentioning

confidence: 99%

Electronic Structure Modulation of Non‐Noble‐Metal‐Based Catalysts for Biomass Electrooxidation Reactions

et al. 2021

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Figure 1. Schematic illustration and the mechanism of the BEOR. a) Schematic illustration of producing value-added products by biomass oxidation electrocatalysis. b) Possible pathways and the energy profiles of HMF oxidation to FDCA on the NiOOH surface. a,b) Reproduced with permission. [54] Copyright 2021, Wiley-VCH. c) Proposed mechanism of the BA oxidation on the Co 3 O 4 NWs/Ti membrane electrode. Reproduced with permission. [55] Copyright 2017, American Chemical Society. d) Incorporation of 18 O in the base-free oxidation of HMF. Reproduced with permission. [56] Copyright 2014, Elsevier.

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“…To optimize the catalytic activity, two focus points are increasing the number of active sites and improving the intrinsic catalytic activity [7,8]. In this regard, constructing heterostructure interfaces is an effective strategy for realizing the simultaneous modulations of the aforementioned aspects [9][10][11]. Heterojunctions constructed by early (W, Mo, V, etc.)…”

Section: Introductionmentioning

confidence: 99%

Multi-touch cobalt phosphide-tungsten phosphide heterojunctions anchored on reduced graphene oxide boosting wide pH hydrogen evolution

et al. 2022

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Multi-interface engineering is deemed as an effective strategy to boost catalytic activity via electronic structure modulation. However, it is still a big challenge due to the phase-separation tendency. Herein, we designed CoP-WP heterojunctions with multi-touch interfaces using Co 8 W 18 , a definite structure polyoxometalate-based polynuclear cobalt molecular cluster, as a precursor. The CoP-WP heterojunctions anchored on reduced graphene oxide (CoP-WP/rGO) were obtained by growing Co 8 W 18 on GO followed by phosphorization. The intrinsic {Co-O-W} coordination modes in Co 8 W 18 are conducive to the formation of the multiple interfaces between CoP and WP. The abundant intimate interfaces in CoP-WP heterojunctions promote the electron transfer from WP to CoP, thus regulating the interfacial electronic structure and optimizing the hydrogen adsorption free energy (ΔG H* ), as verified by X-ray photoelectron spectroscopy analysis and theoretical calculations. Furthermore, the integration of rGO provides CoP-WP/rGO with a large surface area and high conductivity, aiding mass transport and charge transfer. CoP-WP/rGO exhibits remarkable hydrogen evolution reaction (HER) activity with low overpotentials of 96, 130, and 138 mV at 10 mA cm −2 in alkaline, acidic and neutral media, respectively, and has long-term durability. Our discovery provides an opportunity to design heterojunction materials with multi-coupled interfaces at low-cost and efficient HER catalysts.

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One-dimensional CO9S8-V3S4 heterojunctions as bifunctional electrocatalysts for highly efficient overall water splitting

Cited by 43 publications

References 51 publications

Vanadium‐Incorporated CoP₂ with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Vanadium‐Incorporated CoP₂ with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Electronic Structure Modulation of Non‐Noble‐Metal‐Based Catalysts for Biomass Electrooxidation Reactions

Multi-touch cobalt phosphide-tungsten phosphide heterojunctions anchored on reduced graphene oxide boosting wide pH hydrogen evolution

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One-dimensional CO9S8-V3S4 heterojunctions as bifunctional electrocatalysts for highly efficient overall water splitting

Cited by 43 publications

References 51 publications

Vanadium‐Incorporated CoP2 with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Vanadium‐Incorporated CoP2 with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Electronic Structure Modulation of Non‐Noble‐Metal‐Based Catalysts for Biomass Electrooxidation Reactions

Multi-touch cobalt phosphide-tungsten phosphide heterojunctions anchored on reduced graphene oxide boosting wide pH hydrogen evolution

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Vanadium‐Incorporated CoP₂ with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting

Vanadium‐Incorporated CoP₂ with Lattice Expansion for Highly Efficient Acidic Overall Water Splitting