A geopolymer membrane for application in a structural mechanics and energy storage difunctional supercapacitor
A structural mechanics and energy storage difunctional supercapacitor based on a geopolymer membrane injected with a 0.5 M Na 2 SO 4 electrolyte and a pseudocapacitive electrode Mn 7 O 13 is designed and assembled. The geopolymer membrane is prepared as a structural electrolyte with metakaolin and a...
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Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2023-09, Vol.25 (36), p.24448-24458 |
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Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A structural mechanics and energy storage difunctional supercapacitor based on a geopolymer membrane injected with a 0.5 M Na
2
SO
4
electrolyte and a pseudocapacitive electrode Mn
7
O
13
is designed and assembled. The geopolymer membrane is prepared as a structural electrolyte with metakaolin and alkaline activator solution. The wide channels in the geopolymer matrix provide paths for ion movement. The Mn
7
O
13
electrode is prepared by different hydrothermal treatments at different temperatures and times, and assembled with activated carbon and a geopolymer with different moduli to form a difunctional supercapacitor. The results show that the electrode sample annealed at 300 °C for 45 min after hydrothermal treatment at 160 °C for 24 h exhibits the best comprehensive performance. The specific capacitance of the electrode is 175.5 F g
−1
(2392.6 F m
−2
) at 1 A g
−1
, and the specific capacitance of the difunctional structure supercapacitor assembled with a geopolymer with a modulus of 1.2 and cured for 28 days is 144.12 F g
−1
(1960.0F m
−2
) at 1 A g
−1
under 15 MPa.
A difunctional structural supercapacitor for civil engineering application is designed and assembled by using a geopolymer electrolyte and a pseudocapacitive Mn
7
O
13
electrode. |
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ISSN: | 1463-9076 1463-9084 |
DOI: | 10.1039/d3cp03017b |