Bioinspired Injection Therapy for Spent LiFePO_(4)Batteries:A Non-Invasive Strategy for Capacity Regeneration and Longevity EnhancementOA
The widespread deployment of lithium iron phosphate(LiFePO4,LFP)batteries has intensified the imperative to address the disposal challenges associated with retired LFP batteries,given their rapidly growing volumes.However,existing regeneration techniques remain constrained by their inherent complexity,high energy demands,and limited scalability,posing significant barriers to achieving efficient and economically viable solutions.Herein,inspired by medical injection therapy,a novel,non-invasive strategy for direct capacity rejuvenation is proposed by injecting recovery reagents into spent LFP batteries,circumventing the need for disassembly.This innovative approach leverages the I3-/I-redox couple to activate residual/dead lithium on the graphite anode and selectively re-engineer the solid electrolyte interphase(SEI),preserving its functional components while optimizing interfacial dynamics.The restored lithium from the anode serves as an intrinsic source to replenish lithium deficits and rectify Li-Fe antisite defects within the degraded LFP cathode.The resulting regenerated pouch cells demonstrate remarkable recovery of electrochemical capacity,accompanied by superior kinetics performance and significantly extended cycle life.This pioneering strategy not only delivers an energy-efficient and cost-effective pathway for LFP battery regeneration but also holds transformative potential to redefine sustainable practices in lithium-ion battery reuse,thereby advancing their practical applications and prolonging their service life.
Peng Wang;Jian Wang;Longwei Bai;Na Li;Chuancong Zhou;Mingyang Chen;Jialiang Zhang;Zhenyue Xing;Zaowen Zhao;Wei Zhang;Xiaodong Shi
Hebei Key Laboratory of Flexible Functional Materials,School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,People''s Republic of ChinaHebei Key Laboratory of Flexible Functional Materials,School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,People''s Republic of ChinaHebei Key Laboratory of Flexible Functional Materials,School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,People''s Republic of ChinaHebei Key Laboratory of Flexible Functional Materials,School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,People''s Republic of ChinaState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,People''s Republic of China College of Physics and Electronic Engineering,Nanyang Normal University,Nanyang 473061,People''s Republic of ChinaState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,People''s Republic of ChinaState Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,No.30 Xueyuan Road,Haidian District,Beijing 100083,People''s Republic of ChinaState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,People''s Republic of ChinaState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,People''s Republic of ChinaChristopher Ingold Laboratory,Department of Chemistry,University College London,London WC1H 0AJ,UKState Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation,School of Materials Science and Engineering,Hainan University,Haikou 570228,People''s Republic of China
信息技术与安全科学
Spent LFP batteriesDirect regenerationI3-/I-redox coupleDead lithiumLithium replenishment
《Nano-Micro Letters》 2026 (7)
P.644-662,19
the financial support from the National Key Research and Development Program of China(No.2022YFC2906000)the National Natural Science Foundation of China(52474325,52404316,22562010).
评论