Abstract
Li/Si coin cells were assembled using crystalline Si as a negative electrode material. The Si was electrochemically lithiated and delithiated to various states of charge. Differential scanning calorimetry studies at heating rates varying from 1°C/min to 20°C/min were performed and analyzed to yield activation energies for crystallization reactions occurring in lithiated Si with increasing temperatures. Activation energies requiring mainly the diffusion of Li atoms were near or below 150 kJ/mol while activation energies requiring the reworking of Si bonds were near or above 300 kJ/mol. Avoiding the formation of Li15Si4 did not significantly impact the DSC signals of delithiated a-LixSi samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
