Constructing two-dimensional (2D) structures for transition-metal oxides (TMOs) can optimize their electronic structures and enable high specific surface areas, thereby offering routes to enhancing the performance of TMOs in energy storage and conversion. However, most 2D TMOs, e.g., Fe2O3, remain so far synthetically challenging due to their intrinsic non-layered structures. Herein, inspired by the mechanism of biomineralization, we report the synthesis of CuO/Fe2O3 hybrid ultrathin nanosheets by using polyvinylpyrrolidone-decorated CuO nanosheets as growth modifiers to modulate the hydrolysis process of Fe2+. The formulated “absorption-and-crystallization” two-step formation processes of such 2D hybrid structures accorded well with the biomineralization scheme in nature. Combining the in-situ transmission electron microscopy (TEM) study, theoretical calculation, and control experiments, we validated that the large density of 2D/2D interfaces enabled by this bio-inspired synthesis process can overcome the self-stacking phenomenon during lithium-ion battery cycling, leading to their high operation stability. This work emphasizes the bio-inspired synthesis of 2D TMOs as a promising pathway toward material design and performance optimization.
Publications
- Article type
- Year
- Co-author
Article type
Year
Research Article
Issue
Nano Research 2022, 15 (6): 5064-5071
Published: 08 April 2022
Downloads:71
Total 1