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Versatile electroch...
Versatile electrochemical manufacturing of mixed metal sulfide/N-doped rGO composites as bifunctional catalysts for high power rechargeable Zn–air batteries
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- Sanchez, Jaime S. (author)
- Instituto IMDEA Energía,IMDEA Energy Institute
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- Xia, Zhenyuan, 1983 (author)
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR),Chalmers tekniska högskola,Chalmers University of Technology
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- Mirehbar, Keyvan (author)
- Instituto IMDEA Energía,IMDEA Energy Institute
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- Sasidharan, Sankar, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Aravindh, S. Assa (author)
- Oulun Yliopisto,University of Oulu
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- Liscio, A. (author)
- Consiglo Nazionale Delle Richerche
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- Sun, Jinhua, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Christian, Meganne (author)
- Consiglo Nazionale Delle Richerche
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- Palma, Jesus (author)
- Instituto IMDEA Energía,IMDEA Energy Institute
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- Palermo, Vincenzo, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
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- Marcilla, Rebeca (author)
- Instituto IMDEA Energía,IMDEA Energy Institute
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Journal of Materials Chemistry A. - 2050-7488 .- 2050-7496. ; 12:20, s. 11945-11959
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Abstract
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- The development of rechargeable zinc–air batteries requires air cathodes capable of performing both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with high performance and an extended operational lifespan. Here, we present a cost-effective and versatile electrochemical method for the direct assembly of such electrocatalysts, consisting of nitrogen-doped reduced graphene oxide (NrGO) and mixed transition metal sulfides (NiCoMnSx or NCMS). To this end, we use a small electric bias to electro-deposit both NrGO and NCMS directly on conductive graphene foam, resulting in a perfect porous network and two interpenetrated paths for the easy transport of electrons and ions. The NCMS/ NrGO composite shows one of the highest limiting currents reported so far for a non-noble metal catalyst. Additionally, it exhibits outstanding bifunctional performance for the ORR/OER, superior to both mixed transition metal compounds and noble metals from previous reports. Thus, it serves as a highly efficient air cathode for practical zinc–air batteries featuring high power densities (124 mW cm−2) and long catalyst durability (1560 cycles, around 260 h). We attribute the excellent performance to the synergistic effect between hetero-structured metallic sites and nitrogen dopants. Our approach can be used for preparing efficient zinc–air cathodes on conductive 3D carbon substrates with arbitrary shapes and good performance.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Sanchez, Jaime S ...
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Xia, Zhenyuan, 1 ...
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Mirehbar, Keyvan
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Sasidharan, Sank ...
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Aravindh, S. Ass ...
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Liscio, A.
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show more...
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Sun, Jinhua, 198 ...
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Christian, Megan ...
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Palma, Jesus
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Palermo, Vincenz ...
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Marcilla, Rebeca
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Journal of Mater ...
- By the university
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Chalmers University of Technology