Work

Electrochemical Activity of a Blue Anatase TiO2Nanotube Array for the Oxygen Evolution Reaction in Alkaline Water Electrolysis

Year: 2016

Type: article

Abstract: An anatase TiO 2 nanotube array (NTA) was fabricated by anodization and successive heat treatments.When the anatase TiO 2 NTA was cathodically polarized, its color changed to blue, and it could be used as an electrochemically active anode for an oxygen evolution reaction (OER) in alkaline water electrolysis.The structure of the blue anatase TiO 2 NTA was controlled by the anodization conditions and its catalytic activity increased with an increase of the surface area.The activity of the blue anatase TiO 2 NTA gradually reduced with the continued OER because of the partial oxidation of Ti 3+ to Ti 4+ .However, an intermittent cathodic regeneration process could significantly slow its reduction rate.The blue anatase TiO 2 NTA could be an alternative anode for alkaline water electrolysis.

Source: Journal of Electrochemical Science and Technology

DOI: 10.5229/jecst.2016.7.1.76

Authors: Junhyeok Han, Hyejin Choi, Gibaek Lee, Yongsug Tak, Jeyong Yoon

Institutions: Inha University, Seoul National University

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Clean water and sanitation

Open Access status: hybrid

Funder: Korea Institute of Energy Technology Evaluation and Planning