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We present titanium nitride (TiN) coated carbon nanotube (CNT) forest electrodes by means of atomic layer deposition (ALD) to store charges in the electrochemical supercapacitors for the first time. The specific achievements as compared with the state-of-art supercapacitor electrodes include: (1) 400 times higher capacitance than a flat-shape electrode; (2) conformal and uniform coating of TiN; and...
This paper presents a novel method to achieve large area contact integration for copper(II) oxide (CuO) nanowire array-based hydrogen gas sensors, which provides a simple solution to the ongoing challenge of harvesting nanostructured materials for gas sensing applications. The method presented herein offers six distinct advantages over previous nanostructured gas sensing technologies: (1) convenient...
Mechanically bendable energy storage devices have been demonstrated based on a lift-off and liquid densification process to construct carbon nanotube (CNT) forests with built-in bottom metal electrodes on top of a flexible substrate. The flexible CNT structure has been fabricated and tested as a supercapacitor electrode with the following salient features: (1) excellent transfer of charge from the...
We report a transfer process for CNT films with intrinsic bottom metal contacts to construct mechanically bendable, densely aligned carbon nanotube (CNT) forests for energy storage devices. The flexible electrode created and investigated as a supercapacitor has the following salient features: (1) excellent transfer of charge from the aligned CNTs to the substrate, (2) simple fabrication, and (3) easy...
This work is based on developing an amorphous silicon-coated, vertically aligned carbon nanotube (CNT) forest for energy storage applications. The architecture of the electrode has three valuable features: (1) enhanced charge transfer via aligned CNTs to the substrate, (2) excellent charge storage capability via amorphous silicon, and (3) the preservation of high surface area and porosity with enhanced...
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