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Real-time imaging o...
Real-time imaging of Na+ reversible intercalation in "Janus" graphene stacks for battery applications
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- Sun, Jinhua, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sadd, Matthew, 1994 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Edenborg, Philip, 1993 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Grönbeck, Henrik, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Thiesen, Peter H. (author)
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- Xia, Zhenyuan, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Quintano, Vanesa (author)
- Consiglio Nazionale delle Ricerche (CNR),National Research Council of Italy (CNR)
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- Qiu, Ren, 1993 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Matic, Aleksandar, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Palermo, Vincenzo, 1972 (author)
- Consiglio Nazionale delle Ricerche (CNR),National Research Council of Italy (CNR),Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2021
- 2021
- English.
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In: Science advances. - : American Association for the Advancement of Science (AAAS). - 2375-2548. ; 7:22
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https://research.cha... (primary) (free)
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https://www.science....
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https://doi.org/10.1...
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Abstract
Subject headings
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- Sodium, in contrast to other metals, cannot intercalate in graphite, hindering the use of this cheap, abundant element in rechargeable batteries. Here, we report a nanometric graphite-like anode for Na+ storage, formed by stacked graphene sheets functionalized only on one side, termed Janus graphene. The asymmetric functionalization allows reversible intercalation of Na+, as monitored by operando Raman spectroelectrochemistry and visualized by imaging ellipsometry. Our Janus graphene has uniform pore size, controllable functionalization density, and few edges; it can store Na+ differently from graphite and stacked graphene. Density functional theory calculations demonstrate that Na+ preferably rests close to -NH2 group forming synergic ionic bonds to graphene, making the interaction process energetically favorable. The estimated sodium storage up to C6.9Na is comparable to graphite for standard lithium ion batteries. Given such encouraging Na+ reversible intercalation behavior, our approach provides a way to design carbon-based materials for sodium ion batteries.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Sun, Jinhua, 198 ...
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Sadd, Matthew, 1 ...
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Edenborg, Philip ...
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Grönbeck, Henrik ...
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Thiesen, Peter H ...
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Xia, Zhenyuan, 1 ...
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Quintano, Vanesa
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Qiu, Ren, 1993
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Matic, Aleksanda ...
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Palermo, Vincenz ...
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- 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 Inorganic Chemis ...
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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 Chemical Science ...
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and Theoretical Chem ...
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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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Science advances
- By the university
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Chalmers University of Technology