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Creators/Authors contains: "Yang, Xiao-Qing"

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  1. ; ; ; ; ; (, Journal of The Electrochemical Society)
    An investigation of alternative lithium salts, lithium tetrafluoroborate (LiBF 4 ), lithium difluoro(oxalato)borate (LiDFOB) and lithium hexafluorophosphate (LiPF 6 ), in novel ester-based (methyl acetate/fluoroethylene carbonate- MA/FEC or methyl propionate/fluoroethylene carbonate- MP/FEC) electrolyte formulations has been conducted in LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622)/graphite cells to improve low temperature cycling performance of lithium ion batteries at −20 °C. Improved low temperature performance was observed with all the lithium salts in MA/FEC electrolyte while comparable room temperature (25 °C) capacities were observed with LiPF 6 salt only. Detailed ex-situ analysis of surface films generated with LiBF 4 , LiDFOB and LiPF 6 in ester-based electrolytes reveals that the solid electrolyte interphase (SEI) is predominately composed of lithium salt decompaction products and addition of 10% FEC (by volume%) may not be sufficient at forming a protective SEI. 
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  2. ; ; ; ; ; ; (, Nano Energy)
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  3. ; ; ; ; ; (, Matter)
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  4. ; ; ; ; ; ; ; ; ; ; et al (, ACS Energy Letters)
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  5. ; ; ; ; ; ; ; ; ; ; et al (, Angewandte Chemie International Edition)
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  6. ; ; ; ; ; ; ; ; ; ; et al (, Advanced Energy Materials)
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  7. ; ; ; ; ; ; ; ; ; ; et al (, Advanced Functional Materials)
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