In-situ construction of Li-Mg/LiF conductive layer to achieve an intimate lithium-garnet interface for all-solid-state Li metal battery

Molten Salt Driven Conversion Reaction Enabling Lithiophilic and Air‐Stable Garnet Surface for Solid‐State Lithium Batteries

“…A great number of interfacial layers including metals (Au, [32] Ag, [33] Sn, [34] Sb, [35] etc. ), alloys, [36,37] compounds (fluorides, [38,39] nitrides, [40,41] oxides, [42] etc. ), and polymers [43,44] have been proved feasible to make intimate Li/LLZO interfacial contacts through regulating the wettability of garnet or taking reactions with Li-metal.…”

Built-in superionic conductive phases enabling dendrite-free, long lifespan and high specific capacity composite lithium for stable solid-state lithium batteries

“…8d), much higher than those of the reported values in literature reports (Table S2, ESI†). 18,48–52 As discussed above, the excellent electrochemical performance was mainly benefited from the superior interfacial wettability of LNO10 towards LLZTO and good ionic conductive properties of Li 3 N and LiN x O y species, which can well regulate Li + stripping/plating behaviors, accelerate bulk and interfacial charge transfer and suppress Li dendrite formation.…”

“…To solve the above problems, one effective approach is to modify the LLZTO surface with lithiophilic layers, such as CoO, 16 Ga, 17 MgF 2 , 18 Li 3 PO 4 19,20 etc. , so as to adjust the wettability between the Li anode and LLZTO, and further improve the interfacial contact.…”

“…12 The poor and loose contact and huge ASR (500-3000 O cm 2 ) at the anode side interface will lead to rapid growth of lithium dendrites and even short circuit of the batteries, which has become one of the main culprits in the practical applications of SSLMBs. [12][13][14][15] To solve the above problems, one effective approach is to modify the LLZTO surface with lithiophilic layers, such as CoO, 16 Ga, 17 MgF 2 , 18 Li 3 PO 4 19,20 etc., so as to adjust the wettability between the Li anode and LLZTO, and further improve the interfacial contact. Recently, some reports indicated that the integration of functional components into molten Li to synthesize CLA was also highly effective to improve the wettability, such as graphite, 21 BN, 22 AlF 3 23 or Si 3 N 4 24 and so on.…”

Solid‐State Li Ion Batteries with Oxide Solid Electrolytes: Progress and Perspective

“…[ 97 ] Jiang et al constructed a 700 nm‐thick MgF 2 sol film on the LLZTO pellet by a spin coating method, then upon the conversion reaction with molten Li, an all‐inorganic mixed conductive layer of Li‐Mg alloy/LiF (LMF) is obtained without adding any binder or filmogen, as shown in Figure 5 a, which demonstrated high resistance and low migration rate. [ 98 ] The LiF and Li‐Mg alloy with low interface energy helps to further enhance the chemical contact between Li and LLZTO. The assembled Li|LMF@LLZTO|LiFePO 4 solid‐state cell maintained a high Coulombic efficiency (99%) and promising capacity retention rate (98.3% and 75.9% at 0.1 and 0.3 C, respectively) after 100 cycles.…”