Work

Effect of Voltage on Platinum Dissolution

Year: 2006

Type: article

Abstract: One of the processes responsible for performance degradation of a polymer electrolyte fuel cell (PEFC) is the loss of the electrochemically active surface area of the platinum-based electrocatalysts, due in part to platinum dissolution. The long-term dissolution behavior of polycrystalline platinum and high-surface-area carbon-supported platinum particles was studied under potentiostatic conditions relevant to PEFC cathode conditions. The equilibrium concentration of dissolved Pt was found to increase monotonically from 0.65 to (vs SHE) and decrease at potentials . Dissolution rates measured at were comparable for the two types of electrodes (1.4 and ).

Source: Electrochemical and Solid-State Letters

DOI: 10.1149/1.2180536

Authors: Xiaoping Wang, Romesh Kumar, Deborah J. Myers

Institution: Argonne National Laboratory

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: U.S. Department of Energy, Argonne National Laboratory