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• W3045437930 endingPage "37026" @default.
• W3045437930 startingPage "37013" @default.
• W3045437930 abstract "Compared with other commercial cathode materials, the LiNi0.8Co0.1Mn0.1O2 cathode (NCM811) has high specific capacity and a relatively low cost. Nevertheless, the higher nickel content in NCM811 leads to an extremely unstable interface between the electrode and the electrolyte, resulting in inferior cyclic stability of the corresponding cell. Use of film-forming additives is regarded as the most feasible and economic approach to construct a stable interface on the NCM811 cathode. However, less effective electrolyte additives have been reported to date. Herein, we propose a valid film-forming electrolyte additive, 2,4,6-triphenyl boroxine (TPBX), for application in a high-voltage NCM811 cathode. Experimental and computational results reveal that the TPBX additive can be preferentially oxidized to generate a highly stable and conductive cathode electrolyte interface (CEI) layer on the NCM811 cathode, which efficiently suppresses the detrimental side reaction and improves the electrochemical performance eventually. In detail, the cyclic stability of the Li/NCM811 half-cell is enhanced from 57% (without additive) to 78% (with 5% TPBX) after 200 cycles at 1C between 3.0 and 4.35 V. At a high current rate of 15C, the TPBX-containing electrode delivers a capacity of about 135 mAh g–1, which is much higher than that of the electrode without the additive (80 mAh g–1). Interestingly, the TPBX is also reduced earlier than the ethylene carbonate (EC) solvent to form an ionically conductive solid electrolyte interface (SEI) film on the graphite anode. Due to the CEI layer on the cathode and the SEI film on the anode simultaneously formed by the TPBX additive, the cyclic performance of the graphite/LiNi0.8Co0.1Mn0.1O2 full cell is enhanced. Therefore, the incorporation of the TPBX additive into the electrolyte provides a convenient method for the commercial application of the high-energy-density NCM811 cathode in high-voltage lithium-ion batteries." @default.
• W3045437930 created "2020-07-29" @default.
• W3045437930 creator A5014036382 @default.
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• W3045437930 date "2020-07-23" @default.
• W3045437930 modified "2023-10-17" @default.
• W3045437930 title "Constructing a Low-Impedance Interface on a High-Voltage LiNi_0.8Co_0.1Mn_0.1O₂ Cathode with 2,4,6-Triphenyl Boroxine as a Film-Forming Electrolyte Additive for Li-Ion Batteries" @default.
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• W3045437930 doi "https://doi.org/10.1021/acsami.0c05623" @default.
• W3045437930 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32700895" @default.
• W3045437930 hasPublicationYear "2020" @default.
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