Journal
NANO LETTERS
Volume 13, Issue 9, Pages 4158-4163Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl401776d
Keywords
Solid electrolyte interphase; SEI formation; irreversible capacity; prelithiation
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Funding
- U.S. Government
- Intelligence Community Postdoctoral Research Fellowship Program through Office of the Director of National Intelligence
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Stabilized lithium metal powder (SLMP) has been applied during battery assembly to effectively prelithiate high capacity (1500-2500 mAh/g) silicon-carbon nanotube (Si-CNT) anodes, eliminating the 20-40% first cycle irreversible capacity loss. Pressure-activation of SLMP is shown to enhance prelithiation and enable capacity matching between Si-CNT anodes and lithium nickel cobalt aluminum oxide (NCA) cathodes in full batteries with minimal added mass. The prelithiation approach enables high energy density NCA/Si-CNT batteries achieving > 1000 cycles at 20% depth-. of-discharge.
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