All nanocarbon Li-Ion capacitor with high energy and high power density
An energy storage device reaching energy densities of 102 Wh/Kg at power densities of 10 W/Kg would mean the possibility of charging such a device in 36 s. The nanocarbon device presented here is closer to that feat than any previously reported system. N-doped Carbon Nanopipes were used as anode and...
| Autores: | , |
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| Formato: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Recursos: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:220650 |
| Acesso em linha: | https://ddd.uab.cat/record/220650 https://dx.doi.org/urn:doi:10.1016/j.mtener.2018.03.005 |
| Access Level: | acceso abierto |
| Palavra-chave: | All nanocarbon Li-ion capacitor High energy density |
| Resumo: | An energy storage device reaching energy densities of 102 Wh/Kg at power densities of 10 W/Kg would mean the possibility of charging such a device in 36 s. The nanocarbon device presented here is closer to that feat than any previously reported system. N-doped Carbon Nanopipes were used as anode and Partially Reduced Graphene Oxide as cathode, with LiPF EC/PC electrolyte. This system yields simultaneously high energy and power densities (262 at 450 W/kg and 78 Wh/kg at 9000 W/kg) which are energy/power combinations considerably higher than those of present Li-ion batteries. Our cell exhibits excellent cycle stability (∼91% capacity retention after 4000 cycles "0.01-4 V"). These breakthrough results are based on the kinetic balancing of the nanocarbon electrodes, which can deliver excellent high energy density at high rates and low costs. |
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