Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 40, Pages 12441-12447Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta11163f
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Funding
- IT R&D program of MKE/KEIT [KI002176-2010-02]
- MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program [NIPA-2012-H0301-12-1009]
- Korea Evaluation Institute of Industrial Technology (KEIT) [KI002176] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Ion-conductive polyimide (PI)/electron-conductive carbon black (CB) composite nanocoating layers (referred to as PI/CB coating layers) are presented as a facile and scalable surface modification strategy for high-voltage lithium ion cathode materials (here, LiCoO2 (LCO) is chosen as a model system). The PI/CB coating layers exhibit a unique synergistic effect (i.e., boosted electronic conduction (from CB networks) in conjunction with suppression of unwanted interfacial side reactions between delithiated LCO and the liquid electrolyte (due to PI nanothin films)), which thus exerts a beneficial influence on the electrochemical performance and thermal stability of high-voltage cells.
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