Potassium Ion Storage: Direct Structure–Performance Comparison of All‐Carbon Potassium and Sodium Ion Capacitors (Adv. Sci. 12/2019)

A hard carbon ion insertion anode gives much higher overpotential with K(+) vs Na(+). This significantly lowers the energy–power of symmetric hybrid potassium ion capacitors (KICs) vs sodium ion capacitors (NICs). However, high surface area, ion adsorption carbon works well with both K and Na, openi...

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Detalles Bibliográficos
Autores principales: Xu, Ziqiang, Wu, Mengqiang, Chen, Zhi, Chen, Cheng, Yang, Jian, Feng, Tingting, Paek, Eunsu, Mitlin, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6662070/
http://dx.doi.org/10.1002/advs.201970075
Descripción
Sumario:A hard carbon ion insertion anode gives much higher overpotential with K(+) vs Na(+). This significantly lowers the energy–power of symmetric hybrid potassium ion capacitors (KICs) vs sodium ion capacitors (NICs). However, high surface area, ion adsorption carbon works well with both K and Na, opening the possibility for high performance symmetric KICs. In article number 1802272, Mengqiang Wu, David Mitlin, and co‐workers provide a direct performance comparison of potassium ion capacitors versus the better‐known sodium ion capacitors. [Image: see text]

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