Co-doped Ni3S2 hierarchical nanoarrays derived from zeolitic imidazolate frameworks as bifunctional electrocatalysts for highly enhanced overall-water-splitting activity

Song, Shiwei; Wang, Yanhui; Li, Wei; Tian, Pengfei; Zhou, Shuyu; Gao, Hongwei; Tian, Xueqing; Zang, Jianbing

doi:10.1016/j.jallcom.2020.154299

Cited by 30 publications

(11 citation statements)

References 57 publications

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“…Liu et al prepared Ni(OH) 2 in Ni‐foam by corrosion and showed 863 mF cm −2 , stability up to 77.3% for 3000 cycles 25 . Similar Ni 3 S 2 synthesis studies have been reported using Ni‐foam as a conductive matrix 19,26‐29 or a sacrificial template of Ni(OH) 2 on Ni‐foam 30‐32 . These studies included precursor composition and hydrothermal conditions' effect on material growth.…”

Section: Introductionmentioning

confidence: 78%

“…25 Similar Ni 3 S 2 synthesis studies have been reported using Ni-foam as a conductive matrix 19,[26][27][28][29] or a sacrificial template of Ni(OH) 2 on Nifoam. [30][31][32] These studies included precursor composition and hydrothermal conditions' effect on material growth. However, fewer studies on hydrothermal sulfidation of NiO as a sacrificial template have been reported.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical studies of Ni(OH) ₂ , NiO, and Ni ₃ S ₂ nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Maile

Ghani

Shinde

et al. 2022

Intl J of Energy Research

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Summary Self‐supported, porous, and binder‐free hexagonal nanosheets of Ni(OH)2 [HS‐Ni(OH)2], hexagonal nanosheets of NiO [HS‐NiO], and hexagonal‐nanosheet/nanoporous‐grain like Ni3S2 [HSNG‐Ni3S2] were successfully grown on 3D Ni‐foam at different stages of hydrothermal synthesis using Ni‐foam as a precursor source for the cost‐effective fabrication of positive electrode for hybrid supercapacitor (SC) application. Comparative analysis revealed that the HSNG‐Ni3S2 exhibited a maximum areal capacitance of 1286 mF cm−2 at 0.5 mA cm−2, far more than the 217 mF cm−2 of HS‐NiO and 129 mF cm−2 of HS‐Ni(OH)2, with remarkable capacitance retention of 97% for 5000 charge‐discharge cycles. The porous binder‐free electrode design, improved interfacial conductivity, and easy ionic diffusion are responsible for the remarkable performance of HSNG‐Ni3S2. Furthermore, the aqueous alkaline hybrid SC assembled by HSNG‐Ni3S2 as a positive electrode with activated carbon as a negative electrode delivered a maximum areal capacitance of 225.4 mF cm−2 at 1 mA cm−2 with remarkable stability up to 92.2% for 5000 charge‐discharge cycles. This study presents insightful electrochemical properties of binder‐free designed Ni‐based Ni(OH)2, NiO, and Ni3S2 electrodes for low‐cost and environmental‐friendly energy storage systems.

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Electrochemical studies of Ni(OH) ₂ , NiO, and Ni ₃ S ₂ nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Maile

Ghani

Shinde

et al. 2022

Intl J of Energy Research

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“…Electrochemical Transformation Strategy. Electrochemical conversion is a structure inheritance strategy to selectively remove the organic ligands from the presynthesized MOF arrays by cyclic voltammetry (CV) treatment in alkaline 66 The Ni(OH) 2 nanosheets (Figure 9b) possess unsaturated coordination on their surface, as well as high permeability, which was conducive to the uniform growth of ZIF-67 nanocrystals (Figure 9c). In the mild sulfidation process, Ni 3 S 2 was generated due to the substitution of OH − by S 2− , and Co 2+ ions were gradually released from the decomposition of ZIF-67 by S 2− ions.…”

Section: Design and Synthesis Of Mof-based Nanoarraysmentioning

confidence: 99%

“…So far, the reported solvothermal or hydrothermal strategies for constructing MOF-derived nanoarrays are the sulfidation of MOF nanoarrays with thioacetamide (TAA) or thiourea at a lower temperature (120–200 °C). As shown in Figure a, Song et al obtained the Co-doped Ni 3 S 2 derived from ZIF-67-Ni(OH) 2 /NF hybrid by facile hydrothermal sulfidation method . The Ni(OH) 2 nanosheets (Figure b) possess unsaturated coordination on their surface, as well as high permeability, which was conducive to the uniform growth of ZIF-67 nanocrystals (Figure c).…”

Section: Design and Synthesis Of Mof-based Nanoarraysmentioning

confidence: 99%

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Self-Supporting Metal-Organic Framework-Based Nanoarrays for Electrocatalysis

Xiao

et al. 2022

ACS Nano

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The replacement of powdery catalysts with self-supporting alternatives for catalyzing various electrochemical reactions is extremely important for the large-scale commercial application of renewable energy storage and conversion technologies. Metal-organic framework (MOF)-based nanoarrays possess tunable compositions, well-defined structure, abundant active sites, effective mass and electron transport, etc., which enable them to exhibit superior electrocatalytic performance in multiple electrochemical reactions. This review presents the latest research progress in developing MOF-based nanoarrays for electrocatalysis. We first highlight the structural features and electrocatalytic advantages of MOF-based nanoarrays, followed by a detailed summary of the design and synthesis strategies of MOF-based nanoarrays, and then describe the recent progress of their application in various electrocatalytic reactions. Finally, the challenges and perspectives are discussed, where further exploration into MOF-based nanoarrays will facilitate the development of electrochemical energy conversion technologies.

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Regulating the Local Spin State and Band Structure in Ni₃S₂ Nanosheet for Improved Oxygen Evolution Activity

Wang

Shen

Lin

et al. 2022

Adv Funct Materials

118

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The separate modulation of the adsorption of *O and *OOH is challenging in oxygen evolution reaction (OER), which results in a large overpotential and slow kinetics. To balance the adsorption of the two active species, here, a way to regulate the local spin state and band structure simultaneously in Ni3S2 nanosheets is reported. The adequate doping of W heteroatoms causes the electron depletion from the Ni active site, which modulates the spin state of eg electrons, weakening the adsorption of *O. Additionally, the introduction of S vacancies contributes to the upshift of the d band center, which strengthens the adsorption of *OOH. In this manner, the adsorption of Ni3S2 for the active intermediates is optimized, resulting in a considerably improved overpotential of 246 mV at 100 mA cm−2 and a Tafel slope of 66 mV dec−1. This work provides insights into the exploration of OER catalysts through synergistic modulation of the spin state and the band structure.

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Co-doped Ni3S2 hierarchical nanoarrays derived from zeolitic imidazolate frameworks as bifunctional electrocatalysts for highly enhanced overall-water-splitting activity

Cited by 30 publications

References 57 publications

Electrochemical studies of Ni(OH) ₂ , NiO, and Ni ₃ S ₂ nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Electrochemical studies of Ni(OH) ₂ , NiO, and Ni ₃ S ₂ nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Self-Supporting Metal-Organic Framework-Based Nanoarrays for Electrocatalysis

Regulating the Local Spin State and Band Structure in Ni₃S₂ Nanosheet for Improved Oxygen Evolution Activity

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Co-doped Ni3S2 hierarchical nanoarrays derived from zeolitic imidazolate frameworks as bifunctional electrocatalysts for highly enhanced overall-water-splitting activity

Cited by 30 publications

References 57 publications

Electrochemical studies of Ni(OH) 2 , NiO, and Ni 3 S 2 nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Electrochemical studies of Ni(OH) 2 , NiO, and Ni 3 S 2 nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Self-Supporting Metal-Organic Framework-Based Nanoarrays for Electrocatalysis

Regulating the Local Spin State and Band Structure in Ni3S2 Nanosheet for Improved Oxygen Evolution Activity

Contact Info

Product

Resources

About

Electrochemical studies of Ni(OH) ₂ , NiO, and Ni ₃ S ₂ nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Electrochemical studies of Ni(OH) ₂ , NiO, and Ni ₃ S ₂ nanostructures on Ni‐foam toward binder‐free positive electrode for hybrid supercapacitor application

Regulating the Local Spin State and Band Structure in Ni₃S₂ Nanosheet for Improved Oxygen Evolution Activity