1. Concurrent recycling chemistry for cathode/anode in spent graphite/LiFePO4 batteries: Designing a unique cation/anion-co-workable dual-ion battery
- Author
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Xian-Kun Hou, Chen-De Zhao, Wen-Hao Li, Xing-Long Wu, Bo Zhao, Yun-Feng Meng, Meng-Xuan Yu, Zhen-Yi Gu, and Hao-Jie Liang
- Subjects
Battery (electricity) ,business.industry ,Energy Engineering and Power Technology ,Environmental pollution ,02 engineering and technology ,Reuse ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,Cathode ,0104 chemical sciences ,Ion ,Anode ,law.invention ,Fuel Technology ,law ,Graphite ,0210 nano-technology ,Process engineering ,business ,Energy (miscellaneous) - Abstract
With the increasing popularity of new energy electric vehicles, the demand for lithium-ion batteries (LIBs) has been growing rapidly, which will produce a large number of spent LIBs. Therefore, recycling of spent LIBs has become an urgent task to be solved, otherwise it will inevitably lead to serious environmental pollution. Herein, a unique recycling strategy is proposed to achieve the concurrent reuse of cathode and anode in the spent graphite/LiFePO4 batteries. Along with such recycling process, a unique cathode composed of recycled LFP/graphite (RLFPG) with cation/anion-co-storage ability is designed for new-type dual-ion battery (DIB). As a result, the recycle-derived DIB of Li/RLFPG is established with good electrochemical performance, such as an initial discharge capacity of 117.4 mA h g−1 at 25 mA g−1 and 78% capacity retention after 1000 cycles at 100 mA g−1. The working mechanism of Li/RLFPG DIB is also revealed via in situ X-ray diffraction and electrode kinetics studies. This work not only presents a far-reaching significance for large-scale recycling of spent LIBs in the future, but also proposed a sustainable and economical method to design new-type secondary batteries as recycling of spent LIBs.
- Published
- 2022