A 3D composite lithium metal anode with pre-fabricated LiZn via reactive wetting

Abstract

Li@NFZO, a 3D composite anode, obtained by heat-treatment and reactive wetting reinforces the electrode/electrolyte interface stability and prolongs the full-cell cycling life under lean electrolyte conditions.

Suppressing void formation in all-solid-state batteries: the role of interfacial adhesion on alkali metal vacancy transport

“…83 In both liquid electrolyte and all-solid-state systems, the in-situ formation of a metallic secondary phases through decomposition of oxides against Li metal has been utilised to improve the work of adhesion. 84,85 The formation of thin, metallic interfacial layers, through decomposition or 'reactive wetting', that can conduct Li may therefore be an important strategy to reach the W ad 2 criterion. The use of metallic ≥ alloys in the liquid state, as recently demonstrated for a Li/LLZO system containing a thin liquid Na-K alloy layer, is another promising avenue to achieve both good adhesion and fast Li transport.…”

Recent Progress in Designing Stable Composite Lithium Anodes with Improved Wettability

“…Due to the confinement in channels, the Li was well entrapped in the framework without obvious volume variation (Figure 6b). These groundbreaking works were followed by enormous worldwide research, in which various current collectors, including carbonized eggplant, [ 94 ] carbon fibers, [ 95,96 ] 3D graphene, [ 97,98 ] copper foam, [ 99 ] and nickel foam, [ 59,100 ] were developed as efficient hosts. It is also believed that ZnO nanoarrays deposited on current collectors can generate capillary forces that promote wetting.…”

“…Li and co‐workers verified this by comparing two Ni foam substrates with or without prelithiated ZnO before wetting. [ 100 ] Later, Cui and co‐workers used in situ imaging to observe that Li 2 O films suppressed the Li wettability. [ 44 ]…”

Li-Ca Alloy Composite Anode with Ant-Nest-Like Lithiophilic Channels in Carbon Cloth Enabling High-Performance Li Metal Batteries

“…Similarly, Wang et al [50] constructed ZnO nanofiber on carbon cloth (CC) and then improved the wettability of CC for infiltration of molten Li. Notably, the Li 2 O insulating layer is formed in situ during the process of Li infiltration, which may screen the Li wettability due to the high formation energy of the Li 2 O/Li interfaces and increase the interfacial impedance [51,52].…”