Chemical Prelithiation of Negative Electrodes in Ambient Air for Advanced Lithium-Ion Batteries.
This study reports an ambient-air-tolerant approach for negative electrode prelithiation by using 1 M lithium-biphenyl (Li-Bp)/tetrahydrofuran (THF) solution as the prelithiation reagent. Key to this strategy are the relatively stable nature of 1 M Li-Bp/THF in ambient air and the unique electrochemical behavior of Bp in ether and carbonate solvents. With its low redox potential of 0.41 V vs Li/Li+, Li-Bp can prelithiate various active materials with high efficacy. The successful prelithiation of a phosphrous/carbon composite electrode and the notable improvement in its initial Coulombic efficiency (CE) demonstrates the practicality of this strategy.
['Wang|Gongwei|G|', 'Li|Feifei|F|', 'Liu|Dan|D|', 'Zheng|Dong|D|', 'Luo|Yang|Y|', 'Qu|Deyu|D|http://orcid.org/0000-0001-8514-2646', 'Ding|Tianyao|T|', 'Qu|Deyang|D|http://orcid.org/0000-0003-3413-6574']
prelithiation negative electrode ambient air lithium-ion batteries biphenyl