Achieving highly efficient pH-universal hydrogen evolution by superhydrophilic amorphous/crystalline Rh(OH)3/NiTe coaxial nanorod array electrode

Sun, Huachuan; Li, Linfeng; Humayun, Muhammad; Zhang, Huaming; Bo, Yanan; Ao, Xiang; Xu, Xuefei; Chen, Kun; Ostrikov, Kostya Ken; Huo, Kaifu; Zhang, Wenjun; Wang, Chundong; Xiong, Yujie

doi:10.1016/j.apcatb.2022.121088

Cited by 84 publications

(64 citation statements)

References 52 publications

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“…This phenomenon can be attributed to that the amorphous NiFe LDH can further improve the aerophobicity and thus result in fast departure of the evolving gas bubbles from the electrode surface. [51][52][53] In a word, the Mo-NiS x @NiFe LDH/NF with a 3D stepped "hollow core-shell" hierarchical structure retains the advantages of its nanostructure, produces a synergistic effect and endows the composite with superhydrophilicity and superoxophobicity as well.…”

Section: Synthesis and Structure Characterizationmentioning

confidence: 99%

Hollow Mo-doped NiS_x nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Guo

Zhang

et al. 2022

J. Mater. Chem. A

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Section: Synthesis and Structure Characterizationmentioning

confidence: 99%

Hollow Mo-doped NiS_x nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Guo

Zhang

et al. 2022

J. Mater. Chem. A

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“…Note that the chemical states of the catalyst are consistent with the crystalline structure analysis with XRD, indicating that the Pd 4 S-Ni 3 S 2 catalyst is successfully synthesized on the NF surface. Compared with the pure Ni 3 S 2 , the Ni 2p and S 2p peaks of Pd 4 S-Ni 3 S 2 exhibit the positive shifts of 1.3 and 0.9 eV, respectively, and the phenomenon further indicates that the strong electronic interaction occurs on the heterointerface between Pd 4 S and Ni 3 S 2 , which is very positive for increasing electrocatalytic activity of Pd 4 S-Ni 3 S 2 /HPNF …”

Section: Resultsmentioning

confidence: 90%

Heterostructured Palladium–Nickel Sulfide on Plasma-Activated Nickel Foil for Robust Hydrogen Evolution

Liu

Chen

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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Transition-metal sulfides are among the effective electrocatalyst candidates for H 2 evolution (HER); however, they still cannot compete with Pt-based electrodes for renewable energy applications. To overcome this issue, grid-matched palladium−nickel sulfides (Pd 4 S/Ni 3 S 2 ) are successfully engineered on the holey surface of nickel foil (HNF), which is first treated with a non-thermal plasma (HPNF) generated by a dielectric barrier discharge. The synthesized heterogeneous Pd 4 S-Ni 3 S 2 /HPNF catalyst results in the electron redistribution on the phase interfaces, enhancing the desorption ability of H* species. Consequently, Pd 4 S-Ni 3 S 2 /HPNF presents a high HER activity, and the overpotentials for generating 10 (j 10 ) and 500 (j 500 ) mA/cm 2 are about 44 and 247 mV. Meanwhile, the catalyst retains good electrocatalytic stability over 50 h at j 100 . In addition, the H 2 amount of Pd 4 S-Ni 3 S 2 /HPNF driven by the current j 10 can reach 11.25 mmol/h, which is competitive with other presently available high-performance electrocatalysts. The theory and in situ Raman spectroscopy results indicate that Pd 4 S and the heterointerfaces between the Pd 4 S and Ni 3 S 2 phases are the main active catalytic sites for H 2 evolution and that the Pd weakens the S−H ads bonds, enhancing the reactive kinetics of the Volmer and Heyrovsky steps. This work provides a new and green approach for engineering highly active and stable electrocatalysts for clean hydrogen production.

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“…These observations validate the fact that the amorphous Ru(OH) 3 layer has been effectively grown on the crystalline Ni 0.85 Se nanorods. Note that such a kind of inverse analysis method can be referred to in our very recent work, as reported elsewhere …”

Section: Resultsmentioning

confidence: 99%

“…As such, we interpret that the advanced HER activity of our as-prepared amorphous/crystalline a/c-RuO 2 /Ni 0.85 Se catalyst could be ascribed to both the interfacial synergy effect and the amorphous feature of the RuO 2 shells, in which Ni 0.85 Se nanorods serve as a conductive substrate allowing fast electron transfer, while the amorphous a-RuO 2 layers enhance the adsorption capability of the reaction intermediates. 23,54,55 To understand the HER kinetics, the Tafel slope was plotted. Figure 3c shows that the Tafel slopes of the sample Ni 0.85 Se, a/c-Ru(OH) 3 /Ni 0.85 Se, a/c-RuO 2 / Ni 0.85 Se, and the reference Pt/C are predicted to be 143, 127, 62, and 38 mV dec −1 , respectively.…”

Section: ■ Introductionmentioning

confidence: 99%

Engineering Amorphous/Crystalline Rod-like Core–Shell Electrocatalysts for Overall Water Splitting

Sun

et al. 2022

ACS Appl. Mater. Interfaces

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The design of bifunctional electrocatalysts for hydrogen and oxygen evolution reactions delivering excellent catalytic activity and stability is highly desirable, yet challenged. Herein, we report an amorphous RuO2-encapsulated crystalline Ni0.85Se nanorod structure (termed as a/c-RuO2/Ni0.85Se) for enhanced HER and OER activities. The as-prepared a/c-RuO2/Ni0.85Se nanorods not only demonstrate splendid HER activity (58 mV@10 mA cm–2 vs RHE), OER activity (233 mV@10 mA cm–2 vs RHE), and electrolyzer activity (1.488 V@10 mA cm–2 vs RHE for overall water splitting) but also exhibit long-term stability with negligible performance decay after 50 h continuous test for overall water splitting. In addition, the variation of the d-band center (from the perspective of bonding and antibonding states) is unveiled theoretically by density functional theory calculations upon amorphous RuO2 layers coupling to clarify the increased hydrogen species adsorption for HER activity enhancement. This work represents a new pathway for the fabrication of bifunctional electrocatalysts toward green hydrogen generation.

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Achieving highly efficient pH-universal hydrogen evolution by superhydrophilic amorphous/crystalline Rh(OH)3/NiTe coaxial nanorod array electrode

Cited by 84 publications

References 52 publications

Hollow Mo-doped NiS_x nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Hollow Mo-doped NiS_x nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Heterostructured Palladium–Nickel Sulfide on Plasma-Activated Nickel Foil for Robust Hydrogen Evolution

Engineering Amorphous/Crystalline Rod-like Core–Shell Electrocatalysts for Overall Water Splitting

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Achieving highly efficient pH-universal hydrogen evolution by superhydrophilic amorphous/crystalline Rh(OH)3/NiTe coaxial nanorod array electrode

Cited by 84 publications

References 52 publications

Hollow Mo-doped NiSx nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Hollow Mo-doped NiSx nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Heterostructured Palladium–Nickel Sulfide on Plasma-Activated Nickel Foil for Robust Hydrogen Evolution

Engineering Amorphous/Crystalline Rod-like Core–Shell Electrocatalysts for Overall Water Splitting

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Hollow Mo-doped NiS_x nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting

Hollow Mo-doped NiS_x nanoarrays decorated with NiFe layered double-hydroxides for efficient and stable overall water splitting