Lithium dendrite inhibition on post-charge anode surface: The kinetics role
2015 MRS Spring Meeting, California, Amerika Birleşik Devletleri, 6 - 10 Nisan 2015, cilt.1774, ss.31-39, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 1774
- Doi Numarası: 10.1557/opl.2015.745
- Basıldığı Şehir: California
- Basıldığı Ülke: Amerika Birleşik Devletleri
- Sayfa Sayıları: ss.31-39
- Anahtar Kelimeler: Activation Energy, Annealing., Kinetics, Lithium Dendrites
- Boğaziçi Üniversitesi Adresli: Hayır
Özet
We report experiments and molecular dynamics calculations on the kinetics of electrodeposited lithium dendrites relaxation as a function of temperature and time We found that the experimental average length of dendrite population decays via stretched exponential functions of time toward limiting values that depend inversely on temperature. The experimental activation energy derived from initial rates as Ea~ 6-7 kcal/mole, which is closely matched by MD calculations, based on the ReaxFF force field for metallic lithium. Simulations reveal that relaxation proceeds in several steps via increasingly larger activation barriers. Incomplete relaxation at lower temperatures is therefore interpreted a manifestation of cooperative atomic motions into discrete topologies that frustrate monotonie progress by 'caging'.