不同Cu2+浓度下热再生氨电池产电及Cu2+去除特性

热再生氨电池（thermally regenerative ammonia-based battery，TRAB）在废弃资源回收方面展现出独特优势和良好应用前景。通过构建TRAB来处理含Cu²⁺废液并回收电能和铜资源，实验中研究了不同Cu²⁺浓度对电池产电性能和废液Cu²⁺去除效果的影响。研究结果表明，当阴极废液Cu²⁺浓度低于0.2 mol/L时，随着Cu²⁺浓度的增加，电池最大输出功率不断增加，电池输出电压和产电周期不断增加，促使批次获得电量和能量密度也不断增加。同时采用TRAB技术去除废液中铜离子具有较高的去除效率，而且去除率随着废液中铜离子浓度的增加而增加。后续研究采用TRAB结合电凝法的两步处理法有望进一步提高处理效果，具有较好的经济性和应用前景。

Effect of Cu2+ concentration in cathode on power generation and copper removal of thermally regenerative ammonia-based battery

The thermally regenerative ammonia-based battery (TRAB) exhibits unique advantages and good application prospects in the recycling of waste resources. By constructing TRAB to treat Cu²⁺-containing waste liquid and recovering electric energy and copper resources, the effects of different Cu²⁺ concentrations on battery power generation performance and Cu²⁺ removal of waste liquid were studied. The results showed that, with the increasing Cu²⁺ concentration less than 0.2 mol/L, the maximal power, the total charge, and the energy density and copper removal rate increased during the discharging. A very-low final concentration and a high removal rate of Cu²⁺ indicated that TRAB is feasible for the treatment of waste water containing Cu²⁺. The two-step treatment method using TRAB combined with electrocoagulation method in the follow-up study is expected to further improve the treatment effect, and has good economic and application prospects.