Integrated design of multifunctional all-in-one polymer electrolyte membranes with 3D crosslinking networks toward high-performance lithium metal batteries

Hu, Zhenyuan; Wang, Yaying; Huo, Shikang; Bao, Wei; Fan, Weizhen; Zhang, Yi; Jing, Xiao; Ahmad, Niaz; Cheng, Hansong; Zhang, Yunfeng

doi:10.1016/j.memsci.2023.121643

Cited by 6 publications

(1 citation statement)

References 47 publications

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“…Figure 5e compares the room-temperature cycling stability of LFP||Li cells assembled with gel electrolytes which are reported in recently published works. [17,24,25,[27][28][29][32][33][34][35][36][37][38][39][40] Relying on the exquisite topology of the supporting skeleton, the PLF@GPE rendered the best-in-class capacity retention after long-term cycling tests.…”

Section: Resultsmentioning

confidence: 99%

An Ultrahigh Modulus Gel Electrolytes Reforming the Growing Pattern of Li Dendrites for Interfacially Stable Lithium‐Metal Batteries

Gou,

Zhang,

Wang

et al. 2023

Advanced Materials

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Gel polymer electrolytes (GPEs) have aroused intensive attention for their moderate comprehensive performances in lithium metal batteries (LMBs). However, GPEs with low elastic moduli of MPa magnitude cannot mechanically regulate the Li deposition, leading to recalcitrant lithium dendrites. Herein, a porous Li7La3Zr2O12 (LLZO) framework (PLF) is employed as an integrated solid filler to address the intrinsic drawback of GPEs. With the incorporation of PLF, the composite GPE exhibits an ultra‐high elastic modulus of GPa magnitude, confronting Li dendrites at a mechanical level and realizing steady polarization at high current densities in Li||Li cells. Benefiting from the compatible interface with anodes, the LFP|PLF@GPE|Li cells deliver excellent rate capability and cycling performance at room temperature. Theoretical models extracted from the topology of solid fillers reveal that the PLF with unique 3D structures can effectively reinforce the gel phase of GPEs at the nano‐scale via providing sufficient mechanical support from the load‐sensitive direction. Numerical models are further developed to reproduce the multi‐physical procedure of dendrite propagation and give insights into predicting the failure modes of LMBs. This work quantitatively clarifies the relationship between the topology of solid fillers and the interface stability of GPEs, providing guidelines for designing mechanically reliable GPEs for LMBs.This article is protected by copyright. All rights reserved

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