Novel design and synthesis of multi-anionic Co(OH)Se with ZIF-67 derived porous carbon matrix as a bifunctional electrocatalyst for rechargeable Zn-air batteries

Kim, Ju Hyeong; Kim, Min; Hong, Jeong Hoo; Lee, Jung-Kul; Kang, Yun Chan

doi:10.1016/j.cej.2023.143359

Cited by 10 publications

(1 citation statement)

References 42 publications

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“…Considering the significant bifunctional activity of Fe 3 Co-NC@900, a lab-made zinc–air battery (ZAB) was assembled to illustrate its real-world implementation, with the performance compared to that of the Pt/C + Ir/C combination. 68–71 Specifically, a ZAB was assembled by combining an Fe 3 Co-NC@900 cathode with a Zn plate anode in a 6 M KOH electrolyte mixed with 0.02 M Zn(OAc) 2 (Fig. 7a).…”

Section: Resultsmentioning

confidence: 99%

Densely accessible Fe/Co–N_x dual-atom site coupled core–shell Co₃Fe₇@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Srinivas,

Yu,

Chen

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

Densely accessible Fe/Co–N_x dual-atom site coupled core–shell Co₃Fe₇@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Srinivas,

Yu,

Chen

et al. 2024

J. Mater. Chem. A

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Innovative Air Cathode with Ni‐Doped Cobalt Sulfide in Highly Ordered Macroporous Carbon Matrix for Rechargeable Zn–Air Battery

Son,

Min,

Cheong

et al. 2024

Advanced Science

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To realize the practical application of rechargeable Zn–Air batteries (ZABs), it is imperative to develop a non‐noble metal‐based electrocatalyst with high electrochemical performance for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Herein, Ni‐doped Co9S8 nanoparticles dispersed on an inverse opal‐structured N, S co‐doped carbon matrix (IO─NixCo9‐xS8@NSC) as a bifunctional electrocatalyst is presented. The unique 3D porous structure, arranged in an inverse opal pattern, provides a large active surface area. Also, the conductive carbon substrate ensures the homogeneous dispersion of NixCo9‐xS8 nanocrystals, preventing aggregation and increasing the exposure of active sites. The introduction of heteroatom dopants into the Co9S8 structure generates defect sites and enhances surface polarity, thereby improving electrocatalytic performance in alkaline solutions. Consequently, the IO─NixCo9‐xS8@NSC shows excellent bifunctional activity with a high half‐wave potential of 0.926 V for ORR and a low overpotential of 289 mV at 10 mA cm−2 for OER. Moreover, the rechargeable ZAB assembled with prepared electrocatalyst exhibits a higher specific capacity (768 mAh gZn−1), peak power density (180.2 mW cm−2), and outstanding stability (over 160 h) compared to precious metal‐based electrocatalyst.

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Novel Ru‐O₃Se₄ Single Atoms Regulate the Charge Redistribution at Ni₃Se₂/FeSe₂ Interface for Improved Overall Water Splitting in Alkaline Media

Guo,

Liu,

Zhang

et al. 2024

Advanced Energy Materials

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Developing low‐cost, highly active, and stable bifunctional catalysts is of great significance for electrochemical water splitting. Herein, novel Ru‐O3Se4 single atoms doped Ni3Se2/FeSe2 interface catalyst is fabricated by a two‐step method for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Notably, Ru‐Ni3Se2/FeSe2 nanosheets exhibit excellent HER (43 mV@10 mA cm−2) and OER (283 mV@100 mA cm−2) activities in alkaline solution. In particular, the mass activity of Ru‐Ni3Se2/FeSe2 catalyst is 3593.61 mA mg Ru−1 at 200 mV for HER and 7073.80 mA mgRu−1 at 400 mV for OER, which is 25.91 and 367.28 times of commercial Pt/C and RuO2, respectively. In situ spectroscopy techniques confirm Ru‐O3Se4 single atoms facilitate the adsorption of intermediates H* and OOH* during HER and OER processes, respectively. Further density functional theory calculations reveal introducing Ru‐O3Se4 single atoms causes the transfer of electrons from Ru to Ni and Fe atoms, leading to a redistribution of charge at the Ni3Se2/FeSe2 interface, thus reducing the energy barriers of rate‐determining step to −0.37 and 1.92 eV for HER and OER, respectively. This work emphasizes the significant role of single atoms at the interface for overall water splitting.

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Novel design and synthesis of multi-anionic Co(OH)Se with ZIF-67 derived porous carbon matrix as a bifunctional electrocatalyst for rechargeable Zn-air batteries

Cited by 10 publications

References 42 publications

Densely accessible Fe/Co–N_x dual-atom site coupled core–shell Co₃Fe₇@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Densely accessible Fe/Co–N_x dual-atom site coupled core–shell Co₃Fe₇@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Innovative Air Cathode with Ni‐Doped Cobalt Sulfide in Highly Ordered Macroporous Carbon Matrix for Rechargeable Zn–Air Battery

Novel Ru‐O₃Se₄ Single Atoms Regulate the Charge Redistribution at Ni₃Se₂/FeSe₂ Interface for Improved Overall Water Splitting in Alkaline Media

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Novel design and synthesis of multi-anionic Co(OH)Se with ZIF-67 derived porous carbon matrix as a bifunctional electrocatalyst for rechargeable Zn-air batteries

Cited by 10 publications

References 42 publications

Densely accessible Fe/Co–Nx dual-atom site coupled core–shell Co3Fe7@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Densely accessible Fe/Co–Nx dual-atom site coupled core–shell Co3Fe7@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Innovative Air Cathode with Ni‐Doped Cobalt Sulfide in Highly Ordered Macroporous Carbon Matrix for Rechargeable Zn–Air Battery

Novel Ru‐O3Se4 Single Atoms Regulate the Charge Redistribution at Ni3Se2/FeSe2 Interface for Improved Overall Water Splitting in Alkaline Media

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Densely accessible Fe/Co–N_x dual-atom site coupled core–shell Co₃Fe₇@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Densely accessible Fe/Co–N_x dual-atom site coupled core–shell Co₃Fe₇@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries

Novel Ru‐O₃Se₄ Single Atoms Regulate the Charge Redistribution at Ni₃Se₂/FeSe₂ Interface for Improved Overall Water Splitting in Alkaline Media