Covalent Triazine Framework Nanosheets: Synthesis and Energy Conversion and Storage†

Comprehensive Summary Covalent triazine framework nanosheets (CTF NSs), an emerging class of two‐dimensional nanomaterials, have received great attention due to their abundant active sites, permanent porosity, molecular structural diversity, superior chemical/thermal stability, and short charge diffusion path, enabling technological breakthroughs in a myriad of applications. The forefront developments and applications of CTF NSs as photocatalysts and electrochemical electrodes have conferred superior performance and made great impact in the field of energy and advanced catalysis. This forward‐looking review aims to summarize the research trends, synthesis, properties of CTF NSs and their CTF counterpart, and highlight their progress in applications with respect to energy storage and conversion devices. Finally, the current challenges and future perspectives for CTF NSs are also presented.