title: Self-Supporting GaN Nanowires/Graphite Paper: Novel High-Performance Flexible Supercapacitor Electrodes.
abstract: Flexible supercapacitors have attracted great interest as energy storage devices because of their promise in applications such as wearable and smart electronic devices. Herein, a novel flexible supercapacitor electrode based on gallium nitride nanowire (GaN NW)/graphite paper (GP) nanocomposites is reported. The outstanding electrical conductivities of the GaN NW (6.36 × 102S m-1) and GP (7.5 × 104S m-1) deliver a synergistically enhanced electrochemical performance that cannot be achieved by either of the components alone. The composite electrode exhibits excellent specific capacitance (237 mF cm-2at 0.1 mA cm-2) and outstanding cycling performance (98% capacitance retention after 10 000 cycles). The flexible symmetric supercapacitor also manifests high energy and power densities (0.30 mW h cm-3and 1000 mW cm-3). These findings demonstrate that the GaN/GP composite electrode has significant potential as a candidate for the flexible energy storage devices.
authors.affiliation: State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
authors.forename: Shouzhi
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
authors.forename: Changlong
authors.initials: C
authors.lastname: Sun
authors.affiliation: State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
authors.forename: Yongliang
authors.initials: Y
authors.lastname: Shao
authors.affiliation: State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
authors.forename: Yongzhong
authors.initials: Y
authors.lastname: Wu
authors.affiliation: State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: State Key Lab of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Hao
keywords: GaN nanowires; flexible electronics; graphite paper; power density; supercapacitors