Scale-up processing of a safe quasi-solid-state lithium battery by cathode-supported solid electrolyte coating

Anin situformed copolymer electrolyte with high ionic conductivity and high lithium-ion transference number for dendrite-free solid-state lithium metal batteries

“…3f). 21,[57][58][59][60][61][62][63][64][65][66] The lithium plating/stripping behaviour of symmetric Li/Li cells with different PEs was studied to evaluate the interface stabilities between the Li metal anode and PEs. As shown in Fig.…”

Suppression of Dehydrofluorination Reactions of a Li0.33La0.557TiO3-Nanofiber-Dispersed Poly(vinylidene fluoride-co-hexafluoropropylene) Electrolyte for Quasi-Solid-State Lithium-Metal Batteries by a Fluorine-Rich Succinonitrile Interlayer

“…As a consequence, the CSE conductivity and CSE//Li interface connection deteriorate, decreasing SSLMB performance. Accordingly, several research groups have used an ester-based interlayer (EBI) to address these issues. ,, EBIs reduce the interfacial impedance to some extent but do not effectively suppress the dehydrofluorination side reactions. An EBI can be gradually consumed during battery cycling because the carbonate ester is easily and continuously decomposed by the Li metal electrode. , Moreover, since ester is usually volatile and flammable, EBIs could pose a safety risk for SSLMBs.…”

“…Accordingly, several research groups have used an esterbased interlayer (EBI) to address these issues. 45,50,51 EBIs reduce the interfacial impedance to some extent but do not effectively suppress the dehydrofluorination side reactions. An EBI can be gradually consumed during battery cycling because the carbonate ester is easily and continuously decomposed by the Li metal electrode.…”

Working Principles of Lithium Metal Anode in Pouch Cells

“…[ 7–9 ] However, the conversion chemistry and high reactivity of Li metal also bring great challenges to the design of robust LMBs with long lifespan and high safety. [ 10,11 ] Specifically, Li dendrite growth and infinite volume variation lead to unstable solid electrolyte interphase (SEI) on Li metal anodes, resulting in low Li utilization, capacity decline, and even safety risk, [ 12 ] severely hindering the practical applications of LMBs. [ 13–15 ]…”

“…[7][8][9] However, the conversion chemistry and high reactivity of Li metal also bring great challenges to the design of robust LMBs with long lifespan and high safety. [10,11] Specifically, Li dendrite growth and infinite volume variation lead to unstable solid electrolyte interphase (SEI) on Li metal anodes, resulting in low Li utilization, capacity decline, and even safety risk, [12] severely hindering the practical applications of LMBs. [13][14][15] Recently, extensive strategies have been exploited to control the dendrite growth of Li metal anodes, including engineering electrolytes and additives, [16] designing 3D host structures, [17][18][19] constructing artificial SEI, [20,21] applying solid-state electrolyte (SSE), [22][23][24] and adjusting operation conditions.…”