A Renewable Sedimentary Slurry Battery: Preliminary Study in Zinc Electrodes
Yue Liu,
Qiyang Hu,
Jing Zhong,
Zhixing Wang,
Huajun Guo,
Guochun Yan,
Xinhai Li,
Wenjie Peng,
Jiexi Wang
Affiliations
Yue Liu
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China
Qiyang Hu
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China
Jing Zhong
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China
Zhixing Wang
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China
Huajun Guo
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China
Guochun Yan
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China
Xinhai Li
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China
Wenjie Peng
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China
Jiexi Wang
School of Metallurgy and Environment, Central South University, Changsha, 410083, P.R. China; Engineering Research Center of the Ministry of Education for Advanced Battery Materials, Central South University, Changsha 410083, PR China; State Key Laboratory for Power Metallurgy, Central South University, Changsha 410083, PR China; Corresponding author
Summary: Low-cost, scalable energy storage is the key to continuing growth of renewable energy technologies. Here a battery with sedimentary slurry electrode (SSE) is proposed. Through the conversion of discrete particles between sedimentary and suspending types, it not only inherits the advantages of semi-solid flow cell but also exhibits high energy density and stable conductive network. Given an example, the zinc SSE (ZSSE) delivers a large discharge capacity of 479.2 mAh g−1 at 10 mA cm−2. More importantly, by renewal of the slurry per 20 cycles, it can run for 112 and 75 cycles before falling below 80% of designed capacity under 10 mA cm−2 (20% DODZn) and 25 mA cm−2 (25% DODZn), respectively. The lost capacity after cycles is able to recover after slurry renewal and the end-of-life SSE can be easily reused by re-formation. The concept of SSE brands a new way for electrochemical energy storage.
