Abstract

The metal-organic frameworks (Zeolitic imidazolate framework-67, ZIF-67) were in-situ grown on the cellulose skeleton surfaces which are rich in hydroxyl groups, and combined with PEO-based electrolytes to form composite solid electrolytes (CSEs). The assembled Li/CSEs/Li exhibit an ultra-long cycle life (>2000 h, 50 °C; >2500 h, 30 °C) and excellent lithium-ion transference efficiency (tLi+ = 0.46) at 50 °C. This work provides a new pathway for the development of high-safety and low-cost all-solid-state batteries.

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