Nickel oxide encapsulated nitrogen-rich carbon hollow spheres with multiporosity for high-performance pseudocapacitors having extremely robust cycle life

Nickel oxide encapsulated nitrogen-rich carbon hollow spheres with multiporosity for high-performance pseudocapacitors having extremely robust cycle life

We report nickel oxide encapsulated nitrogen-rich carbon hollow spheres with multiporosity, where micropores increase the number of active sites to store redox ions and mesopores enhance the ionic diffusivity of encapsulated nickel oxide, which lead to high capacitance and robust cycle life. Moreove...

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Veröffentlicht in:Energy & environmental science 2015-01, Vol.8 (1), p.188-194
Hauptverfasser: Kim, Se Yun, Jeong, Hyung Mo, Kwon, Jun Ho, Ock, Il Woo, Suh, Won Hyuk, Stucky, Galen D, Kang, Jeung Ku
Format: Artikel
Sprache:eng
Schlagworte:
Capacitance
Capacitors
Carbon
Density
Diffusivity
Encapsulation
Nickel oxides
Stores
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Zusammenfassung:We report nickel oxide encapsulated nitrogen-rich carbon hollow spheres with multiporosity, where micropores increase the number of active sites to store redox ions and mesopores enhance the ionic diffusivity of encapsulated nickel oxide, which lead to high capacitance and robust cycle life. Moreover, a high-performance full capacitor showing excellent energy and power densities is realized.
ISSN:1754-5692
1754-5706
DOI:10.1039/c4ee02897j