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TiN nanosheet arrays on Ti foils for high-performance supercapacitance.

ABSTRACT: A simple template-free method of preparing mesoporous TiN nanostructures directly on Ti foils is developed by combining hydrothermal, ion exchange and nitridation reactions. The as-prepared TiN nanosheet arrays on Ti foils can be directly used as an electrode without any subsequent processing, and are found to be a good capacitance material. The specific capacitance of the TiN nanosheets electrode measured at the current density of 0.5 A g^-1 reaches 81.63 F g^-1, and the capacitance retention is still 75% after 4000 cycles. The symmetric supercapacitor made up of two TiN nanosheet electrodes sandwiching a solid electrolyte (polyvinyl alcohol in KOH) shows a specific capacitance of 0.42 F cm^-3, and retains 77.6% of the capacitance even at the current density of 12.5 mA cm^-3.

SUBMITTER: Wang C

PROVIDER: S-EPMC9079738 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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TiN nanosheet arrays on Ti foils for high-performance supercapacitance.

Wang Cong C Zhou Peng P Wang Zeyan Z Liu Yuanyuan Y Wang Peng P Qin Xiaoyan X Zhang Xiaoyang X Dai Ying Y Dai Ying Y Whangbo Myung-Hwan MH Huang Baibiao B

RSC advances 20180404 23

A simple template-free method of preparing mesoporous TiN nanostructures directly on Ti foils is developed by combining hydrothermal, ion exchange and nitridation reactions. The as-prepared TiN nanosheet arrays on Ti foils can be directly used as an electrode without any subsequent processing, and are found to be a good capacitance material. The specific capacitance of the TiN nanosheets electrode measured at the current density of 0.5 A g-1 reaches 81.63 F g-1, and the cap ...[more]

PMID: 35541252

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