Kinetics Tuning the Electrochemistry of Lithium Dendrites Formation in Lithium Batteries through Electrolytes
- Beijing Inst. of Technology (China). School of Materials Science & Engineering
- Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division; The Ohio State Univ., Columbus, OH (United States). Dept. of Chemistry and Biochemistry
- Beijing Inst. of Technology (China). School of Materials Science & Engineering; The National High Technology Development Center of Green Materials, Beijing (China)
- Chinese Academy of Sciences (CAS), Beijing (China). Beijing Key Lab. of Ionic Liquids Clean Process. Key Lab. of Green Process and Engineering. State Key Lab. of Multiphase Complex Systems. Inst. of Process Engineering
- Beijing Inst. of Technology (China). School of Materials Science & Engineering; The National High Technology Development Center of Green Materials, Beijing (China); Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
- Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
Lithium batteries are one of the most advance energy storage devices in the world and have attracted extensive research interests. However, lithium dendrite growth was a safety issue which handicapped the application of pure lithium metal in the negative electrode. In this paper, two solvents, propylene carbonate (PC) and 2-methyl-tetrahydrofuran (2MeTHF), and four Li+ salts, LiPF6, LiAsF6, LiBF4 and LiClO4 were investigated in terms of their effects on the kinetics of lithium dendrite formation in eight electrolyte solutions. The kinetic parameters of charge transfer step (exchange current density, j0, transfer coefficient, α) of Li+/Li redox system, the mass transfer parameters of Li+ (transfer number of Li+, tLi+, diffusion coefficient of Li+, DLi+), and the conductivity (κ) of each electrolyte were studied separately. The results demonstrate that the solvents play a critical role in the measured j0, tLi+, DLi+, and κ of the electrolyte, while the choice of Li+ salts only slightly affect the measured parameters. Finally, the understanding of the kinetics will gain insight into the mechanism of lithium dendrite formation and provide guidelines to the future application of lithium metal.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Beijing Institute of Technology (China); Chinese Academy of Sciences (CAS), Beijing (China)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Natural Science Foundation of China (NSFC); National Basic Research Program of China
- Contributing Organization:
- The National High Technology Development Center of Green Materials, Beijing (China); The Ohio State Univ., Columbus, OH (United States)
- Grant/Contract Number:
- AC02-06CH11357; 51404230; 21473011; 51402018; 2014CB932300; 2015CB251100
- OSTI ID:
- 1368563
- Journal Information:
- ACS Applied Materials and Interfaces, Vol. 9, Issue 8; ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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