A hybrid of MnO2 nanowires and MWCNTs as cathode of excellent rate capability for supercapacitors

W. Tang, Y. Y. Hou, X. J. Wang, Y. Bai, Y. S. Zhu, H. Sun, Y. B. Yue, Y. P. Wu, K. Zhu, R. Holze

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

108 Цитирования (Scopus)


A hybrid of MnO2-nanowires and MWCNTs to be used as cathode in a supercapacitor with good electrochemical performance was prepared by a facile hydrothermal method. In this hybrid the α-MnO2 nanowires are well entangled with MWCNTs. The MWCNTs provide a network for fast electron transport whereas MnO2 nanowires show a fast redox response. Since gain/loss of both electrons and ions can be realized very rapidly at the same time, the hybrid has an excellent rate capability and delivers an energy density of 17.8 Wh kg-1 at 400 W kg-1, which is maintained almost constant even at 3340 W kg-1 in 0.5 M Li2SO4 aqueous electrolyte. The cycling behavior is very good even in the presence of oxygen. The data present great promise for the hybrid as a practical cathode material for aqueous supercapacitor.

Язык оригиналаанглийский
Страницы (с-по)330-333
Число страниц4
ЖурналJournal of Power Sources
СостояниеОпубликовано - 1 янв 2012

Предметные области Scopus

  • Возобновляемые источники энергии и окружающая среда
  • Энергетическая технология
  • Физическая и теоретическая химия
  • Электротехника и электроника


Подробные сведения о темах исследования «A hybrid of MnO<sub>2</sub> nanowires and MWCNTs as cathode of excellent rate capability for supercapacitors». Вместе они формируют уникальный семантический отпечаток (fingerprint).