A cobalt-nickel boride nanosheet electrocatalytic material and a preparation method thereof
By growing cobalt-nickel boride nanosheets in situ at low temperature on a nickel foam substrate, the problem of difficult control of catalyst morphology and structure in existing technologies has been solved, achieving highly efficient bifunctional electrocatalytic performance and stability, simplifying the production process and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA JILIANG UNIV
- Filing Date
- 2026-06-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for preparing bifunctional catalysts using materials such as nickel-boron and cobalt-boron are difficult to precisely control the microstructure and structure of the catalysts, resulting in insufficient exposure of active sites and low mass transfer efficiency. In particular, the release of bubbles is not smooth at high current densities, which limits the reaction kinetics.
A one-step reduction method was used to grow cobalt-nickel boride nanosheets in situ at low temperature on a nickel foam substrate. By controlling the dropping rate of sodium borohydride solution and the reaction temperature, a vertically aligned, ultrathin and uniformly distributed nanosheet structure was formed. Combined with the nickel foam substrate, a robust three-dimensional self-supporting structure was formed, which enhanced the electron transport channels and interfacial bonding.
The specific surface area of the catalyst was significantly increased, exposing more active sites and improving the efficiency of hydrogen evolution and oxygen evolution reactions. The material maintained structural integrity and activity stability during long-term electrocatalytic cycling, reducing production costs and energy consumption.
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Figure CN122406296A_ABST