The development of lithium(Li)metal batteries has been severely limited by the formation of lithium dendrites and the associated catastrophic failure and inferior Coulombic efficiency which caused by non-uniform or in...The development of lithium(Li)metal batteries has been severely limited by the formation of lithium dendrites and the associated catastrophic failure and inferior Coulombic efficiency which caused by non-uniform or insufficient Li^(+)supply across the electrode-electrolyte interface.Therefore,a rational strategy is to construct a robust electrolyte that can allow efficient and uniform Li^(+)transport to ensure sufficient Li^(+)supply and homogenize the Li plating/stripping.Herein,we report an ion-percolating electrolyte membrane that acts as a stable Li^(+)reservoir to ensure a near-single Li^(+)transference number(0.78)and homogenizes Li^(+)migration to eradicate dendrite growth,endowing Li//LFP cell with an ultrahigh average Coulombic efficiency(ca.99.97%)after cycling for nearly half of a year and superior cycling stability when pairing with LiCoO_(2) with limited Li amount and LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2).These estimable attributes demonstrate significant potential of utility value for the ion-percolating electrolyte.展开更多
基金National Natural Science Foundation of China,Grant/Award Number:51803054Basic Science Center Project of the National Key R&D Program of China,Grant/Award Number:2021YFB2400400+2 种基金Science and Technology Innovation Program of Hunan Province,Grant/Award Number:2023RC3154Natural Science Foundation of Hunan Province,Grant/Award Numbers:2019JJ50223,2020JJ3022Foundation from Education Department of Hunan Province,Grant/Award Number:19B270。
文摘The development of lithium(Li)metal batteries has been severely limited by the formation of lithium dendrites and the associated catastrophic failure and inferior Coulombic efficiency which caused by non-uniform or insufficient Li^(+)supply across the electrode-electrolyte interface.Therefore,a rational strategy is to construct a robust electrolyte that can allow efficient and uniform Li^(+)transport to ensure sufficient Li^(+)supply and homogenize the Li plating/stripping.Herein,we report an ion-percolating electrolyte membrane that acts as a stable Li^(+)reservoir to ensure a near-single Li^(+)transference number(0.78)and homogenizes Li^(+)migration to eradicate dendrite growth,endowing Li//LFP cell with an ultrahigh average Coulombic efficiency(ca.99.97%)after cycling for nearly half of a year and superior cycling stability when pairing with LiCoO_(2) with limited Li amount and LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2).These estimable attributes demonstrate significant potential of utility value for the ion-percolating electrolyte.
