In situ synchrotron wide-angle X-ray scattering study on rapid lithiation of graphite anode via direct contact method for Li-ion capacitors

Title
In situ synchrotron wide-angle X-ray scattering study on rapid lithiation of graphite anode via direct contact method for Li-ion capacitors
Authors
박현철김민호Fan Xu정철수홍순만구종민
Keywords
Li ion capacitor; anode doping; graphite electrode; in situ synchrotron WAXS
Issue Date
2015-06
Publisher
Journal of power sources
Citation
VOL 283, 68-73
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 1ʹ 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
URI
http://pubs.kist.re.kr/handle/201004/49767
ISSN
03787753
Appears in Collections:
KIST Publication > Article
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