An ion‐percolating electrolyte membrane for ultrahigh efficient and dendrite‐free lithium metal batteries

Abstract

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 LiCoO2 with limited Li amount and LiNi0.8Mn0.1Co0.1O2. These estimable attributes demonstrate significant potential of utility value for the ion‐percolating electrolyte.image

Recent advances in membrane technologies applied in oil–water separation

“…It offers several advantages, including high separation efficiency, simple equipment, energy savings, room temperature operation, and no pollution [1][2][3][4]. The technology is widely used in various industrial fields, particularly in the areas of food, medicine, and biochemicals [5][6][7][8][9]. As shown in Fig.…”

Energy level regulation of anions via hydrogen bond effects to construct a stable solid electrolyte interface for a high-stability lithium metal anode

“…2,5,6 However, lithium metal is extremely susceptible to react with organic electrolytes due to its high activity, resulting in poor Coulombic efficiency (CE). 7,8 In addition, it is well known that the solvation molecules and anions in the solvation structures of Li + formed in electrolyte tend to be reduced firstly on the lithium electrode surface and form a fragile and inhomogeneous SEI, which is favorable for promoting side reactions and lithium dendrite growth during cycling. 9,10 Therefore, the structure of the Li + solvation sheath is crucial for improving the performance of LMBs.…”

Low‐Strain and High‐Energy KVPO4F Cathode with Multifunctional Stabilizer for Advanced Potassium‐Ion Batteries

“…Lithium-ion batteries (LIBs) have been successfully exploited and widely applied in various electronic devices, greatly facilitating all aspects of life. [1][2][3] Despite the significant development, LIBs also have a series of issues that cannot be ignored, mainly due to the scarcity of lithium resources. [4][5][6] In this scenario, sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are being developed intensively due to high abundance of sodium/potassium resources and similarity of the working mechanism to that of LIBs.…”