Abstract
Lithium pre-doping of graphite anode is a key process to achieve high energy density lithium-ion capacitor. In this study, in situ synchrotron wide-angle X-ray scattering examinations directly revealed that the direct contact (DC) method, simply achieved through direct physical contact between graphite electrode and sacrificial lithium metal in electrolyte, provides much faster phase transformation from stage 1 to stage 1 than conventional electronic charger (EC) and external short circuit (ESC) methods at the same doping time level. The observations indicate that DC method achieves faster pre-lithiation rate of graphite electrode than EC and ESC processes.
Original language | English |
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Pages (from-to) | 68-73 |
Number of pages | 6 |
Journal | Journal of Power Sources |
Volume | 283 |
DOIs | |
State | Published - 1 Jun 2015 |
Keywords
- Graphite lithiation
- In situ synchrotron wide-angle
- Lithium ion capacitor
- X-ray scattering