Highly-lithiophilic Ag@PDA-GO film to Suppress Dendrite Formation on Cu Substrate in Anode-free Lithium Metal Batteries

From Lithium‐Metal toward Anode‐Free Solid‐State Batteries: Current Developments, Issues, and Challenges

“…[80] Since then, multiple studies have exploited the beneficial influence of Ag. [94][95][96] In fact, the lithiophilicity of Ag nanoparticles was confirmed independently of the electrolyte composition, hence suggesting the application in AFSSB. Similarly, transferring further successful CC modification approaches such as carbon-based wetting agents (e.g., g-C 3 N 4 , [97] Graphene [77] ) or 3D structures (e.g., Au-modified carbon fibers, [98] graphene cages [99] ) from liquid electrolyte batteries to AFSSB is regarded to be highly promising.…”

Challenges, Strategies, and Prospects of the Anode‐Free Lithium Metal Batteries

“…In addition, Wondimkun et al also reported the lipophilicity properties of the hybrid electrode (Cu|Ag@PDA‐GO) by the two‐step spin‐coated methods (Figure 6g). [ 78 ] The functional material was designed on the current collector surface to reduce the Li nucleation barrier, which enables higher 55.7% capacity retention after 60 cycles within the FEC in the carbonate‐based electrolyte at 0.5 mA cm −2 (Figure 6h,i). Lithiophilic silver nanoparticles with polydopamine (Ag@PDA) were crucial as nucleation seeds to facilitate the uniformity of the initial lithium nucleation by forming an alloy LiAg phase, which could maximize the utilization of the limited lithium inventory for plating and stripping.…”

Dendrite‐Suppressing Polymer Materials for Safe Rechargeable Metal Battery Applications: From the Electro‐Chemo‐Mechanical Viewpoint of Macromolecular Design

“…[ 35 ] As dendrites are grown on the anode surface, parasitic SEI damage is inevitably accompanied by the morphological change of metallic deposits, thereby substantially reducing Coulombic efficiency. Thus, building an artificial SEI layer on the metal anodes [ 37 ] or current collectors [ 38 ] has been emphasized as a smart strategy to restrain dendrite growth and further prevent catastrophic side reactions at the SEI/electrolyte interface. Such artificial SEI layers accommodate the morphological changes of anode surface and assist regular redeposition of metal underneath the SEI layers, thus effectively protecting fresh metal surface to the electrolyte.…”

“…Modulating the interface of current collectors with polymeric artificial SEI layers has also been proposed as an effective strategy for dendrite suppression. [ 38 ] Weng et al. have demonstrated that an ultrathin (<100 nm) ionomer membrane consisting of Li‐exchanged sulfonated polyether ether ketone (SPEEK‐Li) embedded with polyhedral oligosilsesquioxane (POSS) on a copper current collector can achieve stable Li plating‐stripping cycles in a carbonate‐based electrolyte (see Figure 3b).…”

“…have demonstrated that an ultrathin (<100 nm) ionomer membrane consisting of Li‐exchanged sulfonated polyether ether ketone (SPEEK‐Li) embedded with polyhedral oligosilsesquioxane (POSS) on a copper current collector can achieve stable Li plating‐stripping cycles in a carbonate‐based electrolyte (see Figure 3b). [ 38b ] The SPEEK exchanged by Li + exhibits high ionic conductivity and mechanical stability, while the case‐like POSS serves as a reinforcing filler. Li‐ions diffuse across the SPEEK‐Li/POSS cation‐selective membrane to form uniform and dense Li deposits.…”