fabricated gel polymer electrolytes (GPEs), characterized with superior interfacial properties and large-scale processibility, represent a promising electrolyte system for high-performance lithium metal batteries (LMBs). Herein, we propose an fabricated high-voltage GPE featuring a localized high-concentration solvation structure (LHCE-GPE). This tailored special solvation structure within a polymer matrix promotes the formation of an electrochemically robust electrode-electrolyte interphase. Furthermore, employing LHCE-GPE, Li||LiNiCoMnO cells operating at 4.8 V demonstrate a high specific capacity of 248 mAh g, and 4.5 V Li||LiNiCoMnO cells achieve a remarkable cycling stability over 1000 cycles. Significantly, our LHCE-GPE allows for the operation of practical solid-state 18650 cylindrical LMBs at 4.7 V and industrial Li-ion batteries at 4.6 V, achieving high energy densities of 250 and 283 Wh kg, respectively (excluding packaging), while also demonstrating robust safety during rigorous nail-penetration tests. Our LHCE-GPE design presents a practical and powerful strategy for realizing solid-state LMBs with high energy density and high safety.
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| http://dx.doi.org/10.1093/nsr/nwaf016 | DOI Listing |
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