A new synthetic approach to cobalt oxides: Designed phase transformation for electrochemical water splitting

Jung, Haeun; Ma, Ahyeon; Abbas, Syed Asad; Kim, Ha Young; Choe, Hye Rin; Jo, So Yeong; Nam, Ki Min

doi:10.1016/j.cej.2020.127958

Cited by 24 publications

(9 citation statements)

References 44 publications

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“…The β-CoOOH phase has a trigonal structure with a P3-type oxygen atom packing, which shows typical catalytic properties owing to its chemical and structural stability. 35–37 The γ-CoOOH also has a trigonal structure ( R 3 m ); however, the γ-CoOOH phase involves mixed Co 3+ and Co 4+ oxidation states with intercalated cations. 38 Therefore, analyzing its chemical composition and structure in detail is difficult.…”

Section: Introductionmentioning

confidence: 99%

Chemical and electrochemical synthesis of cobalt hydroxides: selective phase transformation and application to distinct electrocatalytic reactions

Park

Kim

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Chemical and electrochemical synthesis of cobalt hydroxides: selective phase transformation and application to distinct electrocatalytic reactions

Park

Kim

et al. 2022

J. Mater. Chem. A

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“…The Ag‐NPs‐Amine showed better catalytic activity than the other electrodes. Tafel slopes describe the kinetics of a catalytic reaction 22 . It is believed that CO 2 is converted into the •CO 2 intermediate through a single electron transfer on the catalyst surface and that this initial electron transfer is the rate‐determining step in the electrochemical CO 2 reduction reaction 23 …”

Section: Resultsmentioning

confidence: 99%

Facile and large‐scale production of Ag nanoparticles for selective electrochemical CO₂ reduction reaction

Abbas

Seo

et al. 2021

Bulletin Korean Chem Soc

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Electrochemical CO2 reduction to carbon monoxide (CO) is immensely important for sustainable CO2 recycling. In this study, we established a facile synthetic method for large‐scale production of Ag nanoparticles, which can be used for the selective electrochemical reduction of CO2 to CO. Thermal decomposition and reduction of AgNO3 produced Ag nanoparticles on a gram‐scale in high yield (over 90%) with a homogeneous size distribution. The oleylamine‐capped Ag nanoparticles were quasi‐spherical with diameters of 9 ± 2 nm. Ag nanoparticles are capable of electrochemical CO2 reduction to CO with high activity and stability. The CO selectivity of the catalyst was in the vicinity of 90% over a wide potential range and reached 94.2% at −1.4 V vs. RHE. The Ag nanoparticles showed good stability over 24 h. Different surface functional groups, for example, thiol and citrate were investigated to understand their influence on the variation in CO selectivity.

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“…Numerous metal oxides including spinel phase cobalt oxides (CoO x ) have been investigated extensively because of their corrosion stability and better catalytic performance toward the electrochemical process in an alkaline electrolyte. 98 Tung et al reported single-crystal nanocubes of Co 3 O 4 along with a thin layer of CoO, which resulted in a composite of greater stability and excellent performance in the OER process. 72 The CoO surface layer is facile kinetically in reaching the active oxyhydroxide phase in metal active centers and behaves as active skin for the OER.…”

Section: Activation/modulating the Electronicmentioning

confidence: 99%

Roles of Metal Oxide Nanostructure-Based Substrates in Sustainable Electrochemical Water Splitting: Recent Development and Future Perspective

Tahir

Arshad

Haq

et al. 2023

ACS Appl. Nano Mater.

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Increasing energy demand to find everlasting and eco-friendly resources is now mainly dependent on green hydrogen production technology. Water electrolysis has been regarded as a clean route for green H 2 production with zero carbon emission, but different bottlenecks in the development of electrodes impeded its realization. Recently, transition metal oxides (TMO) have gained tremendous attention as suitable cathodes and anodes due to their sustainability under harsh conditions, high redox features, maximum supportive capability, easy modulation in valence states, and enhanced electrical conductivity. In this review, we have highlighted the role of transition metal oxides as active and supported sites for electrochemical water splitting. We have proposed different perspectives for the rational design of TMO-based electrode materials, i.e., electronic state modulation, modification of the surface structure to control the aerophobicity and hydrophilicity, acceleration of the charge and mass transport, and stability of the electrocatalyst in harsh environments. We have systemically discussed the insights into the relationship among catalytic activity, certain specified challenges, research directions, and perspectives of electrocatalysis of the OER and HER.

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A new synthetic approach to cobalt oxides: Designed phase transformation for electrochemical water splitting

Cited by 24 publications

References 44 publications

Chemical and electrochemical synthesis of cobalt hydroxides: selective phase transformation and application to distinct electrocatalytic reactions

Chemical and electrochemical synthesis of cobalt hydroxides: selective phase transformation and application to distinct electrocatalytic reactions

Facile and large‐scale production of Ag nanoparticles for selective electrochemical CO₂ reduction reaction

Roles of Metal Oxide Nanostructure-Based Substrates in Sustainable Electrochemical Water Splitting: Recent Development and Future Perspective

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A new synthetic approach to cobalt oxides: Designed phase transformation for electrochemical water splitting

Cited by 24 publications

References 44 publications

Chemical and electrochemical synthesis of cobalt hydroxides: selective phase transformation and application to distinct electrocatalytic reactions

Chemical and electrochemical synthesis of cobalt hydroxides: selective phase transformation and application to distinct electrocatalytic reactions

Facile and large‐scale production of Ag nanoparticles for selective electrochemical CO2 reduction reaction

Roles of Metal Oxide Nanostructure-Based Substrates in Sustainable Electrochemical Water Splitting: Recent Development and Future Perspective

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Facile and large‐scale production of Ag nanoparticles for selective electrochemical CO₂ reduction reaction