一种烷基锂改性层状双金属氢氧化物催化剂的制备方法和应用
By modifying layered bimetallic hydroxides (LDHs) with alkyl lithium to control their hydrogen-oxygen ratio and metal ion valence state, an amorphous structure is formed, which solves the problems of precious metal scarcity and insufficient active sites, and realizes a highly efficient and stable OER catalyst suitable for the energy field.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI UNIV
- Filing Date
- 2023-02-21
- Publication Date
- 2026-07-17
AI Technical Summary
The scarcity and high cost of precious metals in existing water electrolysis oxygen evolution electrocatalysts limit their large-scale application. Furthermore, the active sites of traditional layered bimetallic hydroxides (LDHs) are not sufficiently exposed, resulting in low OER activity and cumbersome preparation processes, making it difficult to meet practical needs.
The method of modifying layered bimetallic hydroxide (LDH) with alkyl lithium involves mixing LDH with n-butyllithium solution, centrifuging with n-hexane and ethanol, and freeze-drying to adjust the hydrogen-oxygen ratio and metal ion valence state, thereby forming an amorphous structure and improving OER activity.
A highly efficient, stable, and low-cost OER catalyst was prepared, which has better performance than ruthenium oxide catalysts, has a long lifespan, is suitable for the energy field, uses widely distributed raw materials, and has a simple and scalable preparation method.
Smart Images
Figure CN116334649B_ABST