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Enhance the capacitance of TiO2 nanotube arrays by a facile cathodic reduction process

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Abstract

TiO2 nanotube arrays have been treated with a facile cathodic reduction process to introduce oxygen vacancies. The capacitance of the treated sample is 13 times larger than the pristine TiO2 nanotube arrays. This work demonstrates a feasible and simple method to improve the electrochemical activity and conductivity of TiO2 for the use of supercapacitors.

© 2013 Optical Society of America

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