title: Activated carbon derived from melaleuca barks for outstanding high-rate supercapacitors.
abstract: Activated carbon (AC) was prepared via carbonizing melaleuca bark in an argon atmosphere at 600 °C followed with KOH activation for high-rate supercapacitors. This AC electrode has a high capacitance of 233 F g(-1) at a scan rate of 2 mV s(-1) and an excellent rate capability of ∼80% when increasing the sweep rate from 2 to 500 mV s(-1). The symmetric supercapacitor assembled by the above electrode can deliver a high energy density of 4.2 Wh kg(-1) with a power density of 1500 W kg(-1) when operated in the voltage range of 0-1 V in 1 M H2SO4 aqueous electrolyte while maintaining great cycling stability (less than 5% capacitance loss after 10 000 cycles at sweep rate of 100 mV s(-1)). All the outstanding electrochemical performances make this AC electrode a promising candidate for potential energy storage application.
authors.forename: Qiu-Ping
authors.initials: QP
authors.lastname: Luo
authors.forename: Liang
authors.initials: L
authors.lastname: Huang
authors.forename: Xiang
authors.initials: X
authors.lastname: Gao
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Cheng
authors.forename: Bin
authors.initials: B
authors.lastname: Yao
authors.forename: Zhimi
authors.initials: Z
authors.lastname: Hu
authors.forename: Jun
authors.initials: J
authors.lastname: Wan
authors.forename: Xu
authors.initials: X
authors.lastname: Xiao
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
mesh_terms: D002244:Carbon / Q000737:chemistry; D025802:Electric Capacitance; D011211:Electric Power Supplies; D004563:Electrochemistry / Q000295:instrumentation*; D004566:Electrodes; D031650:Melaleuca
chemical_list: D002244:Carbon