Overview
A research team has developed a highly durable platinum-nickel (PtNi) hydrogen evolution catalyst. This catalyst demonstrated operational stability over 3,000 hours, a characteristic attributed to its ability to suppress nickel (Ni) leaching. Nickel leaching is a primary factor contributing to performance degradation in catalysts utilized in anion exchange membrane water electrolysis (AEMWE).
Research Context
The development addresses a challenge in the field of anion exchange membrane water electrolysis (AEMWE), specifically the performance degradation of catalysts. A significant cause of this degradation has been identified as nickel (Ni) leaching from the catalyst material.
Approach
The research team engineered a platinum-nickel (PtNi) hydrogen evolution catalyst. The methodology employed involved promoting atomic ordering within the catalyst structure. This structural modification was specifically designed to mitigate the issue of nickel (Ni) leaching.
Findings
The developed platinum-nickel (PtNi) hydrogen evolution catalyst exhibited an operational lifespan of 3,000 hours. This extended durability is directly linked to the suppression of nickel (Ni) leaching. The mechanism for this suppression is atomic ordering within the catalyst material. The findings were published in the journal Carbon Energy.