DataVXACS Applied Energy MaterialsPaper
journal article·2022-03-28

IrOXSupported onto Niobium-Doped Titanium Dioxide as an Anode Reversal Tolerant Electrocatalyst for Proton Exchange Membrane Fuel Cells

Jianhua Liao, Yameng Wang, Ming Chen, Min Wang, Jiantao Fan, Hui Li, Haijiang Wang, Lin Zeng, Tianshou Zhao

ACS Applied Energy Materials· Volume 5· Issue 3
Publisher page
Source abstract

Abstract

The addition of an oxygen evolution electrocatalyst to an anode catalyst layer is demonstrated as a practical approach to address the voltage reversal of proton exchange membrane fuel cells (PEMFCs). In this work, IrOX nanoparticles uniformly deposited on niobium-doped TiO2 (IrOX/Nb0.1Ti0.9O2) by a sol–gel method are employed as reversal tolerant anodes (RTAs) for PEMFCs. The membrane electrode assembly (MEA) with this RTA possesses a reversal tolerance time of 29.1 min, which is the best result among all the as-prepared MEAs. Meanwhile, the decrease in the cell voltage of this MEA after reversal testing is only 61 mV at a current density of 1.2 A cm–2 with a degradation rate of 11.1%. The improved reversal tolerance is attributed, in part, to the uniformly distributed IrOX nanoparticles, boosting the oxygen evolution reaction and, in part, to avoid the carbon oxidation reaction by the application of a noncarbon support. This result can lay a fundamental basis for the application of RTA based on a noncarbon support to improve the anode reversal tolerance for PEMFCs.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055 Guangdong, China

Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology), Ministry of Education, Shenzhen 518055, China

Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055 Guangdong, China

Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou 511458, China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province · Hong Kong University of Science and Technology · Guangdong Innovative and Entrepreneurial Research Team Program · Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology · Shenzhen Fundamental Research Programs · Key Laboratory of Energy Conversion and Storage Technologies, Southern University of Science and Technology

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