title: Coaxial Ni(x)Co(2x)(OH)(6x)/TiN nanotube arrays as supercapacitor electrodes.
abstract: NixCo2x(OH)6x, as a precursor of intensively studied NiCo2O4, has been directly deposited into self-standing titanium nitride nanotube array (TiN NTA) grid monolithic supports to form a coaxial nanostructured electrode for supercapacitors. With TiN NTA substrates providing a large surface area, fast electron transport, and enhanced structure stability, this NixCo2x(OH)6x/TiN electrode exhibits superior pseudocapacitive performance with a high specific capacitance of 2543 F g(-1) at 5 mV s(-1), remarkable rate performance of 660 F g(-1) even at 500 mV s(-1), and promising cycle performance (about 6.25% capacitance loss for 5000 cycles). Interestingly, the NixCo2x(OH)6x/TiN NTA electrode outperforms the NiCo2O4/TiN NTA electrode, indicating that this self-standing NixCo2x(OH)6x/TiN NTA monolith is a promising candidate for high-performance supercapacitor applications.
authors: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, People's Republic of China.
authors: Chaoqun
authors: C
authors: Shang
authors: Shanmu
authors: S
authors: Dong
authors: Shan
authors: S
authors: Wang
authors: Dongdong
authors: D
authors: Xiao
authors: Pengxian
authors: P
authors: Han
authors: Xiaogang
authors: X
authors: Wang
authors: Lin
authors: L
authors: Gu
authors: Guanglei
authors: G
authors: Cui
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D025802:Electric Capacitance; D004566:Electrodes; D036103:Nanotechnology / Q000295:instrumentation*; D043942:Nanotubes / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D003035:Cobalt; C041500:titanium nitride; D009532:Nickel; D014025:Titanium