Operando monitoring of dendrite formation in lithium metal batteries via ultrasensitive tilted fiber Bragg grating sensorsOACSTPCD
Lithium(Li)dendrite growth significantly deteriorates the performance and shortens the operation life of lithium metal batteries.Capturing the intricate dynamics of surface localized and rapid mass transport at the electrolyte–electrode interface of lithium metal is essential for the understanding of the dendrite growth process,and the evaluation of the solutions mitigating the dendrite growth issue.Here we demonstrate an approach based on an ultrasensitive tilted fiber Bragg grating(TFBG)sensor which is inserted close to the electrode surface in a working lithium metal battery,without disturbing its operation.Thanks to the superfine optical resonances of the TFBG,in situ and rapid monitoring of mass transport kinetics and lithium dendrite growth at the nanoscale interface of lithium anodes have been achieved.Reliable correlations between the performance of different natural/artificial solid electrolyte interphases(SEIs)and the time-resolved optical responses have been observed and quantified,enabling us to link the nanoscale ion and SEI behavior with the macroscopic battery performance.This new operando tool will provide additional capabilities for parametrization of the batteries’electrochemistry and help identify the optimal interphases of lithium metal batteries to enhance battery performance and its safety.
Xile Han;Hai Zhong;Kaiwei Li;Xiaobin Xue;Wen Wu;Nan Hu;Xihong Lu;Jiaqiang Huang;Gaozhi Xiao;Yaohua Mai;Tuan Guo;
Institute of Photonics Technology,Jinan University,Guangzhou 510632,ChinaInstitute of New Energy Technology,College of Information Science and Technology,Jinan University,Guangzhou 510632,ChinaInstitute of Photonics Technology,Jinan University,Guangzhou 510632,China Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun 130022,ChinaThe Key Lab of Low-Carbon Chemistry&Energy Conservation of Guangdong Province,School of Chemistry,Sun Yat-Sen University,Guangzhou 510275,ChinaSustainable Energy and Environment Thrust,The Hong Kong University of Science and Technology(Guangzhou),Nansha,Guangzhou,Guangdong 511400,ChinaAdvanced Electronics and Photonics Research Centre,National Research Council of Canada,Ottawa K1A OR6,Canada
动力与电气工程
batterylithiumelectrolyte
《Light(Science & Applications)》 2024 (001)
P.153-166 / 14
supported by the National Natural Science Foundation of China(Nos.62035006 and U2033204);the Guangdong Outstanding Scientific Innovation Foundation(No.2019TX05X383);the Program of Marine Economy Development Special Fund under Department of Natural Resources of Guangdong Province(No.GDNRC[2023]23);J.H.is indebted to National Natural Science Foundation of China(No.52207230);Guangzhou Municipal Science and Technology Project(Nos.2023A03J0003 and 2023A03J0103).
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