| Autor: |
Kim S; Department of Battery and Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea., Lee K; Department of Bio and Health Sciences, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea., Kim K; Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea., Lee SSS; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States., Fortner JD; Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States., An H; Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea., Son Y; Department of Battery and Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea.; Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea., Hwang H; Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea., Han Y; Resources Utilization Division, Korea Institute of Geoscience & Mineral Resources, Daejeon 34132, Republic of Korea., Myung Y; Advanced Energy Materials and Components R&D Group, Korea Institute of Industrial Technology, Busan 46744, Republic of Korea., Jung H; Department of Battery and Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea.; Department of Chemical Engineering, Changwon National University, Changwon, Gyeongsangnam-do 51140, Republic of Korea. |
| Abstrakt: |
The consumption of lithium-ion batteries (LIBs) has considerably increased over the past decade, leading to a rapid increase in the number of spent LIBs. Exposing spent LIBs to the environment can cause serious environmental harm; however, there is a lack of experimentally obtained information regarding the environmental impacts of abandoned cathode materials. Here, we report the interactions between Shewanella putrefaciens , a microorganism commonly found in diverse low-oxygen natural settings, and LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) under anaerobic conditions. We present compelling evidence that the anaerobic respiration of Shewanella putrefaciens triggers ∼59 and ∼78% dissolution of 0.2 g/L pristine and spent NCM622, respectively. We observed that Shewanella putrefaciens interacted with the pristine and the spent NCM622 under anaerobic conditions at a neutral pH and room temperature and induced the reduction of Ni, Co, and Mn, resulting in the subsequent dissolution of Li, Ni, Co, and Mn. Moreover, we found that secondary mineralization occurred on the surface of reacted NCM622. These findings not only shed light on the substantial impact of microbial respiration on the fate of discarded cathode materials in anaerobic environments but also reveal the potential for sustainable bioleaching of cathodes in spent LIBs. |
