铟- mof作为多功能促进剂去除全固态锂金属电池含氟聚合物电解质的离子电导率和电化学稳定性限制

IF 26.6 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-05-07 DOI:10.1007/s40820-025-01760-x

Xiong Xiong Liu, Long Pan, Haotian Zhang, Cancan Liu, Mufan Cao, Min Gao, Yuan Zhang, Zeyuan Xu, Yaping Wang, ZhengMing Sun

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引用次数: 0

摘要

提出了铟基金属-有机骨架（In-MOF）作为多功能促进剂制备聚偏氟乙烯-六氟丙烯(PVH)/In-MOF （PVH- im）复合固体聚合物电解质，同时获得1.23 × 10−3 S cm−1的高离子电导率和优异的Li阳极电化学稳定性。In-MOF不仅可以吸附游离残余溶剂并将其转化为键合态，防止其与锂阳极发生副反应，还可以诱导富无机固体电解质间相层，防止PVH与锂阳极发生反应，促进均匀的锂沉积而不产生枝晶生长。在0.2 mA cm−2电流密度下，Li|PVH-IM|锂对称电池可稳定循环5550 h。此外，全固态LFP|PVH-IM|Li充满电池在25°C下循环280次后，在0.5C的速率下，容量保持率达到80.0%。

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Indium-MOF as Multifunctional Promoter to Remove Ionic Conductivity and Electrochemical Stability Constraints on Fluoropolymer Electrolytes for All-Solid-State Lithium Metal Battery

Highlights

Indium-based metal–organic framework (In-MOF) is proposed as a multifunctional promoter to create poly(vinylidene fluoride–hexafluoropropylene) (PVH)/In-MOF (PVH-IM) composite solid polymer electrolyte, synchronously achieving a high ionic conductivity of 1.23 × 10⁻³ S cm⁻¹ and excellent electrochemical stability against Li anodes.
In-MOF not only can adsorb and convert free residual solvents into bonded states to prevent their side reactions with Li anodes, but also induce inorganic-rich solid electrolyte interphase layers to prevent PVH from reacting with lithium anodes and promote uniform lithium deposition without dendrite growths.
The Li|PVH-IM|Li symmetric cells maintain stable cycling for 5550 h at the current density of 0.2 mA cm⁻². In addition, all-solid-state LFP|PVH-IM|Li full cells deliver a significant capacity retention of 80.0% at a rate of 0.5C after 280 cycles at 25 °C.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.