Chinese Journal of Chemical Engineering ›› 2021, Vol. 32 ›› Issue (4): 335-340.doi: 10.1016/j.cjche.2020.09.031

• Energy, Resources and Environmental Technology • Previous Articles     Next Articles

Effect of operating parameters on the performance of thermally regenerative ammonia-based battery for low-temperature waste heat recovery

Yu Shi, Liang Zhang, Jun Li, Qian Fu, Xun Zhu, Qiang Liao, Yongsheng Zhang   

  1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing 400030, China;Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China
  • Received:2019-12-02 Revised:2020-09-09 Online:2021-04-28 Published:2021-06-19
  • Contact: Liang Zhang
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 51976018), the National Natural Science Foundation for Young Scientists of China (No. 51606022), Natural Science Foundation of Chongqing, China (No. cstc2017jcyjAX0203), Scientific Research Foundation for Returned Overseas Chinese Scholars of Chongqing, China (No. cx2017020), the Fundamental Research Funds for the Central Universities (No. 106112016CDJXY145504) and Research Funds of Key Laboratory of Low-grade Energy Utilization Technologies and Systems (No. LLEUTS-2018005).

Abstract: This study investigated the important factors that affect the operating parameters of thermally regenerative ammonia-based batteries (TRABs), including the metal electrode type, membrane type, electrode surface area, electrode distance, electrolyte concentration, and ammonia concentration. The experimental results showed that the maximum power density of TRABs with a Cu electrode was 40.0 W·m-2, which was considerably higher than that with Ni (0.34 W·m-2) and Co (0.14 W·m-2) electrodes. TRABs with an anion exchange membrane had a 28.6% higher maximum power density than those with a cation exchange membrane. An increased electrode surface resulted in an increased maximum power but a decreased maximum power density. Within a certain range, TRAB performance was enhanced with decreased electrode distance and increased electrolyte concentration. An increased ammonia concentration resulted in enhanced ammonia transfer and improved the TRAB performance.

Key words: Electrochemistry, Thermally regenerative ammonia-based, battery, Recovery, Renewable energy