哈柏法是目前主流的人工固氮技术，但面临着反应条件苛刻（高温、高压）、能耗巨大（占世界年能耗1-2%）、污染严重等问题。因而，发展可替代的常温、常压的可持续固氮体系成为研究热点。近年来，电催化合成氨技术凭借着灵活便捷、反应条件适宜等特性，受到广泛关注，但如何高效活化氮氮三键，解决析氢反应对合成氨效率的制约等难题，亟待解决。为此，项目首次提出单原子催化耦合低温等离子体活化的固氮体系：以空间三维材料为载体，基于配位环境的调控，构筑优化的金属单原子位点，提高单原子催化剂的稳定性和活性；利用原位检测技术和密度泛函理论揭示催化体系的构效关系；并进一步提出将射流低温等离子体与单原子催化剂相耦合，利用富含高活性粒子的等离子体体系解决析氢反应的制约问题，同时实现二次固氮。该设想可利用间歇性、地域性的可再生能源电力供给，所得研究结果最终可为实现高效、低能耗的分布式固氮提供理论指导和实验支持。

Although Harber-Bosch process is the mainstream artificial nitrogen fixation technology at present, it still encounters many problems such as harsh reaction conditions (high temperature and pressure), huge energy consumption (1~2% of the global annual energy consumption) and serious environmental pollution. Therefore, the development of sustainable nitrogen fixation technologies at mild conditions to substitute the conventional Harber-Bosch process gradually emerges as the research hotspot. With the merits of flexibility, convenience and appropriate reaction conditions, electrocatalytic synthesis of ammonia attracts widespread attentions. However, how to efficiently activate the Nitrogen-Nitrogen triple bond and solve the constraints of hydrogen evolution reaction on the efficiency of ammonia synthesis, etc. are urgent to be addressed. Hence, single atom catalysis coupling with low temperature plasma activation is innovatively proposed for nitrogen fixation. Based on the regulation of coordination environment, the sites of single metal atom are optimized on a three-dimensional substrate to improve the stability and activity of the catalysts. In-situ measurement technologies and density function theory calculation are used to reveal the structure-activity relationship of the catalytic system. Additionally, we further propose to couple low temperature jet plasma with single atom catalyst. The high reactive plasma environment can provide an effective solution to overcome the limits caused by hydrogen evolution reaction, while realize a secondary nitrogen fixation simultaneously.Eventually, the proposed conception can directly utilize intermittent and regional renewable energy power supply, while the obtained research results can effectively provide the theoretical guidance and experimental support for the distributed nitrogen fixation with high-efficiency and low energy consumption.