Oxidation processes on conducting carbon additives for lithium-ion batteries
KAUST Grant NumberKUS-l1-001-12
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AbstractThe oxidation processes at the interface between different types of typical carbon additives for lithium-ion batteries and carbonates electrolyte above 5 V versus Li/Li+ were investigated. Depending on the nature and surface area of the carbon additive, the irreversible capacity during galvanostatic cycling between 2.75 and 5.25 V versus Li/Li+ could be as high as 700 mAh g-1 (of carbon). In the potential region below 5 V versus Li/Li+, high surface carbon additives also showed irreversible plateaus at about 4.1-4.2 and 4.6 V versus Li/Li+. These plateaus disappeared after thermal treatments at or above 150 °C in inert gas. The influence of the irreversible capacity of carbon additives on the overall performances of positive electrodes was discussed. © 2012 Springer Science+Business Media Dordrecht.
CitationLa Mantia F, Huggins RA, Cui Y (2012) Oxidation processes on conducting carbon additives for lithium-ion batteries. Journal of Applied Electrochemistry 43: 1–7. Available: http://dx.doi.org/10.1007/s10800-012-0499-9.
SponsorsThe study was partially supported by the Global Climate and Energy Project at Stanford and King Abdullah University of Science and Technology (KAUST) under the award No. KUS-l1-001-12. We thank Heather Deshazer and Dr. Jang Wook Choi for experimental assistance.