Thermally oxidized porous NiO as an efficient oxygen evolution reaction (OER) electrocatalyst for electrochemical water splitting application

Babar, Pravin; Lokhande, A.C.; Gang, Myeng Gil; Pawar, B.S.; Pawar, S.M.; Kim, Jihun

doi:10.1016/j.jiec.2017.11.037

Cited by 166 publications

(65 citation statements)

References 25 publications

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“…Hence, there is an apparent urgency for exploring highly efficient non-noble metal electrocatalysts with rapid ORR/OER kinetics and superior overall performance. Transition metals such as MnO 2 [15], Co 3 O 4 [16], and NiO [17] are considered as substitutes for noble metal-based electrocatalysts and have been in the spotlight as oxygen electrocatalysts for both the OER and ORR. For example, Zhuang and co-workers reported that the OER activity of transition metal oxides followed the order: NiO x > CoO x > FeO x > MnO x , suggesting that NiO x is an excellent candidate as an electrocatalyst [18].…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Oxygen Electrocatalyst of Mesoporous Ni/NiO Nanosheets for Flexible Rechargeable Zn–Air Batteries

et al. 2020

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HIGHLIGHTS • An oxygen electrocatalyst consisting of Ni nanoparticles interpenetrated in porous NiO nanosheets was successfully synthesized. • The liquid Zn-air battery reveals a large open-circuit potential of 1.47 V, the maximum power density at 225 mW cm −2 , and excellent device stability of over 120 h. • The flexible solid-like rechargeable Zn-air battery shows excellent stability (no evident weakening after 240 cycles) and bendability.

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Section: Introductionmentioning

confidence: 99%

Bifunctional Oxygen Electrocatalyst of Mesoporous Ni/NiO Nanosheets for Flexible Rechargeable Zn–Air Batteries

et al. 2020

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“…NiO has typical peaks for Ni 2+ in NiO: 855.3 eV for Ni 2+ 2p3/2 [ 24 , 25 ]. The composite of Ni/NiO contributes to their good catalytic performances for OER and ORR by the low charge transfer resistance of NiO [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation of Nickel Nanoparticles by Direct Current Arc Discharge Method and Their Catalytic Application in Hybrid Na-Air Battery

Qiu

Liang

et al. 2018

Nanomaterials

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Nickel nanoparticles were prepared by the arc discharge method. Argon and argon/hydrogen mixtures were used as plasma gas; the evaporation of anode material chiefly resulted in the formation of different arc-anode attachments at different hydrogen concentrations. The concentration of hydrogen was fixed at 0, 30, and 50 vol% in argon arc, corresponding to diffuse, multiple, and constricted arc-anode attachments, respectively, which were observed by using a high-speed camera. The images of the cathode and anode jets were observed with a suitable band-pass filter. The relationship between the area change of the cathode/anode jet and the synchronous voltage/current waveform was studied. By investigating diverse arc-anode attachments, the effect of hydrogen concentration on the features of nickel nanoparticles were investigated, finding that 50 vol% H2 concentration has high productivity, fine crystallinity, and appropriate size distribution. The synthesized nickel nanoparticles were then used as catalysts in a hybrid sodium–air battery. Compared with commercial a silver nanoparticle catalyst and carbon black, nickel nanoparticles have better electrocatalytic performance. The promising electrocatalytic activity of nickel nanoparticles can be ascribed to their good crystallinity, effective activation sites, and Ni/NiO composite structures. Nickel nanoparticles prepared by the direct current (DC) arc discharge method have the potential to be applied as catalysts on a large scale.

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“…Nickel oxides are good candidates for the OER [62][63][64][65] because these catalysts are resistant to corrosion in alkaline media. In addition, enhancements in the performance of these catalysts can be made by changing their particle size, surface area and microstructure, which motivated researchers to discover new methods to enhance electrocatalytic OER activities as well.…”

Section: Nickel Oxidesmentioning

confidence: 99%

“…Based on this, Zhang et al [63] assembled Fe-doped NiO x catalysts from ultrathin nanosheets containing trivalent (Ni 3+ ) active centres. Here, XPS analysis confirmed the presence of Ni 3+ active sites and the incorporation of Fe and Ni was found to result in an increase in oxygen vacancies.…”

Section: Nickel Oxidesmentioning

confidence: 99%

Recent Progresses in Electrocatalysts for Water Electrolysis

Khan

Zhao

Zou

et al. 2018

Electrochem. Energ. Rev.

335

178

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The study of hydrogen evolution reaction and oxygen evolution reaction electrocatalysts for water electrolysis is a developing field in which noble metal-based materials are commonly used. However, the associated high cost and low abundance of noble metals limit their practical application. Non-noble metal catalysts, aside from being inexpensive, highly abundant and environmental friendly, can possess high electrical conductivity, good structural tunability and comparable electrocatalytic performances to state-of-the-art noble metals, particularly in alkaline media, making them desirable candidates to reduce or replace noble metals as promising electrocatalysts for water electrolysis. This article will review and provide an overview of the fundamental knowledge related to water electrolysis with a focus on the development and progress of non-noble metal-based electrocatalysts in alkaline, polymer exchange membrane and solid oxide electrolysis. A critical analysis of the various catalysts currently available is also provided with discussions on current challenges and future perspectives. In addition, to facilitate future research and development, several possible research directions to overcome these challenges are provided in this article.

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Thermally oxidized porous NiO as an efficient oxygen evolution reaction (OER) electrocatalyst for electrochemical water splitting application

Cited by 166 publications

References 25 publications

Bifunctional Oxygen Electrocatalyst of Mesoporous Ni/NiO Nanosheets for Flexible Rechargeable Zn–Air Batteries

Bifunctional Oxygen Electrocatalyst of Mesoporous Ni/NiO Nanosheets for Flexible Rechargeable Zn–Air Batteries

Preparation of Nickel Nanoparticles by Direct Current Arc Discharge Method and Their Catalytic Application in Hybrid Na-Air Battery

Recent Progresses in Electrocatalysts for Water Electrolysis

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