Coaxial Ni&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Co&lt;sub&gt;2&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;(OH)&lt;sub&gt;6&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;/TiN Nanotube Arrays as Supercapacitor Electrodes

Chaoqun Shang (1306749); Shanmu Dong (1306752); Shan Wang (120085); Dongdong Xiao (627185); Pengxian Han (1943776); Xiaogang Wang (250803); Lin Gu (1306755); Guanglei Cui (1306764)

JOURNAL ARTICLE

Coaxial NixCo2x(OH)6x/TiN Nanotube Arrays as Supercapacitor Electrodes

Chaoqun Shang (1306749)Shanmu Dong (1306752)Shan Wang (120085)Dongdong Xiao (627185)Pengxian Han (1943776)Xiaogang Wang (250803)Lin Gu (1306755)Guanglei Cui (1306764)

Year: 2016 Journal: OPAL (Open@LaTrobe) (La Trobe University) Publisher: La Trobe University

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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.

Keywords:

Electrode Capacitance Supercapacitor Titanium nitride Coaxial Nitride

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Supercapacitor Materials and Fabrication

Physical Sciences → Materials Science → Electronic, Optical and Magnetic Materials

Electrodeposition and Electroless Coatings

Physical Sciences → Engineering → Electrical and Electronic Engineering

Nanoporous metals and alloys

Physical Sciences → Materials Science → Materials Chemistry

Coaxial Ni<sub><i>x</i></sub>Co<sub>2<i>x</i></sub>(OH)<sub>6<i>x</i></sub>/TiN Nanotube Arrays as Supercapacitor Electrodes

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