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http://dx.doi.org/10.4313/JKEM.2007.20.5.421

Thermal Stability of Delithiated LiCoO2-organic Electrolyte for Lithium-Ion Rechargeable Batteries  

Kim, Dong-Hun (한국전기연구원 전지연구그룹)
Lee, Young-Ho (한국전기연구원 전지연구그룹)
Shin, Hye-Min (한국전기연구원 전지연구그룹)
Chung, Young-Dong (한국전기연구원 전지연구그룹)
Doh, Chil-Hoon (한국전기연구원 전지연구그룹)
Jin, Bong-Soo (한국전기연구원 전지연구그룹)
Kim, Hyun-Soo (한국전기연구원 전지연구그룹)
Moon, Seong-In (한국전기연구원 전지연구그룹)
Oh, Dae-Hui (부경대학교 공업화학과)
Kim, Ki-Won (경남대학교 IT용 에너지 저장 및 변환센터)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.5, 2007 , pp. 421-424 More about this Journal
Abstract
Thermal behavior of $Li_{1-x}CoO_2$ has been investigated employing DSC (Differential Scanning calorimetry) and TGA (Thermogravimetry Analyzer), and the crystal parameters were calculated from XRD (X-ray diffraction).for the commercial rectangular pouch cell(1000 mAh).The cathode materials coated over aluminium foil current collector is made up of a blend consisting of active material $LiCoO_2$(size $20\;{\mu}m$, 94 wt%), conducting material super p black (SPB, 3 wt%) and binder polyvinylidene fluoride (PVDF, 3 wt%). The anode is a mix consisting of carbon (92 wt%) and PVDF(8 wt%) coated over copper foil. The cells for the experiments were first preconditioned by cycling three times and stabilized at OCV=3.0, 3.5, 4.2, 4.35 and 4.5 V. The stabilized cathode material was used for thermal and crystal parameter investigations.
Keywords
$LiCoO_2$; Thermal stability; DSC; XRD pattern;
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