Poly (carbazole)-Coated Selenium@ Conical Carbon Nanofibers Hybrid for Lithium–Selenium Batteries with Enhanced Lifespan
A scalable protocol enabling selenium (Se) cathodes in Lithium (Li)-Se batteries to retain a
high reversible capacity with repeated cycling is demonstrated. A hybrid of Se powder with
conical carbon nanofibers (CCNFs) labeled as Se@ CCNFs-20, is prepared in a noninert
atmosphere at room temperature and is used as cathode in a Li–Se cell. Reversible capacity
of∼ 990 mAh gSe–1 is achieved at 0.1 current (C)-rate for the Li–Se@ CCNFs-20 cell,
which reduces to∼ 531 mAh gSe–1 after 100 cycles. CCNFs are composed of elongated …
high reversible capacity with repeated cycling is demonstrated. A hybrid of Se powder with
conical carbon nanofibers (CCNFs) labeled as Se@ CCNFs-20, is prepared in a noninert
atmosphere at room temperature and is used as cathode in a Li–Se cell. Reversible capacity
of∼ 990 mAh gSe–1 is achieved at 0.1 current (C)-rate for the Li–Se@ CCNFs-20 cell,
which reduces to∼ 531 mAh gSe–1 after 100 cycles. CCNFs are composed of elongated …