铁基催化剂具有原料丰富、成本低廉、无毒等特性，成为了贵金属催化剂的最佳替代品。如何通过合理的材料设计和结构调控实现其高效稳定的水裂解催化反应，是目前研究面临的关键问题。本项目以铁硼间隙化合物为研究对象，利用其结构组成和成键形式的多样性，实现其表面结构与晶体结构的优化调控，开发高效稳定的非贵金属水裂解催化剂。内容包括：（1）探索铁硼间隙化合物超薄纳米片的构筑方法。拟利用盐晶体作为模板基底与目标产物的晶格匹配，驱动晶面的各向异性生长，实现超薄纳米片结构的构建。（2）探索铁硼间隙化合物晶体结构的调控策略。利用熔融盐作为固相反应溶剂，加速反应物质的扩散速度，实现不同晶体结构的精准调控。（3）系统的研究催化材料表面结构与吸附中间体之间的相互作用，识别铁硼间隙化合物的表面催化活性位，揭示其表面结构、晶体结构与催化性能的内在联系，推动铁基催化剂在电催化领域的应用与发展。

Iron-based catalysts have become the best alternatives to precious metal catalysts due to their rich raw materials, low cost and non-toxic properties. Achieving efficient and stable water splitting catalytic reactions through reasonable material design and structural regulation is the key issue for iron-based catalysts. Herein, we take the iron-boron interstitial compound as the research object, by utilizing the diversity of its structural composition and bonding forms to realize the optimal control of surface structure and crystal structure, and develop an efficient and stable non-precious metal water splitting catalyst. Main contents include: (1) Exploring the construction method of iron-boron interstitial compounds with ultrathin nanosheets. We plan to facilitate the anisotropic growth of the crystal plane and achieve the construction of ultrathin nanosheet structures, using salt crystals as template substrates to match the lattice of the target products. (2) Exploring the strategies for regulating the crystal structure of iron-boron interstitial compounds. The molten salt is used as a solid-phase reaction solvent to accelerate the diffusion rate of the reaction substance and achieve precise control of different crystal structures. (3) We plan to systematically study the interaction between the surface structure of catalytic materials and the adsorption intermediates, identify the surface catalytic active sites of iron-boron interstitial compounds, and reveal the catalytic reaction mechanism. Our work can be anticipated to inject new impetus into the development of iron-based catalysts in the field of electrocatalysis.