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Controlled Functionalization of Carbonaceous Fibers for Asymmetric Solid‐State Micro‐Supercapacitors with High Volumetric Energy Density
Author(s) -
Yu Dingshan,
Goh Kunli,
Zhang Qiang,
Wei Li,
Wang Hong,
Jiang Wenchao,
Chen Yuan
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201403061
Subject(s) - materials science , supercapacitor , graphene , nanotechnology , energy density , surface modification , electrode , lithium (medication) , oxide , flexibility (engineering) , carbon nanotube , capacitance , chemical engineering , engineering physics , medicine , chemistry , statistics , mathematics , endocrinology , engineering , metallurgy
A 1.8 V asymmetric solid‐state flexible micro‐supercapacitor is designed with one MnO 2 ‐coated reduced graphene oxide/single‐walled carbon nanotube (rGO/SWCNT) composite fiber as positive electrode and one nitrogen‐doped rGO/SWCNT fiber as negative electrode, which demonstrates ultrahigh volumetric energy density, comparable to some thin‐film lithium batteries, along with high power density, long cycle life, and good flexibility.