Zhu Weijie, Zhang Xiaoyi, Yao Fen, Huang Runping, Chen Yue, Chen Chaolong, Fei Jiawei, Chen Yunqing, Wang Zhoucheng, Liang Hanfeng
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
Key Laboratory of Preparation and Applications of Environmentally Friendly Material of the Ministry of Education, College of Chemistry, Jilin Normal University, Changchun, 130103, China.
Angew Chem Int Ed Engl. 2023 May 2;62(19):e202300390. doi: 10.1002/anie.202300390. Epub 2023 Mar 31.
The traditional technologies for industrial and agricultural effluent treatment are often energy-intensive. Herein, we suggest an electrochemical redox strategy for spontaneous and simultaneous decontamination of wastewater and generation of both fuels and electricity at low cost. Using hydrazine and nitrate effluents as a demonstration, we propose a hydrazine-nitrate flow battery (HNFB) that can efficiently purify the wastewater and meanwhile generate both ammonia fuel and electricity with the assistance of our developed bimetallic RuCo precatalyst. Specifically, the battery delivers a peak power density of 12 mW cm and continuously operates for 20 h with an ammonia yield rate of ca. 0.38 mmol h cm under 100 mA cm . The generated electricity can further drive a hydrazine electrolyzer to produce hydrogen fuel. Our work provides an alternative pathway to purify wastewater and generate high value-added fuels at low cost.
传统的工农业废水处理技术往往能耗巨大。在此，我们提出一种电化学氧化还原策略，可实现废水的自发同步净化，并以低成本生产燃料和电力。以肼和硝酸盐废水为例，我们提出了一种肼 - 硝酸盐液流电池（HNFB），在我们开发的双金属RuCo预催化剂的辅助下，该电池能够有效净化废水，同时生成氨燃料和电力。具体而言，该电池的峰值功率密度为12 mW cm ，在100 mA cm 下连续运行20小时，氨产率约为0.38 mmol h cm 。所产生的电力可进一步驱动肼电解槽生产氢燃料。我们的工作为低成本净化废水和生产高附加值燃料提供了一条替代途径。
