在硫化物电解质固态电池中加入离子导电聚合物以提高电化学稳定性和循环寿命

IF 13 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Juhyoung Kim, Woonghee Choi, Seong-Ju Hwang, Dong Wook Kim
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引用次数: 0

摘要

硫化物基无机固体电解质是高性能安全固态电池的理想材料。硫化物基无机固态电解质具有高离子传导性、机械特性和良好的可加工性,是取代传统液态电解质实现高性能安全固态电池的理想材料。然而,硫化物基无机固体电解质较低的化学和电化学稳定性阻碍了硫化物基安全固态电池的商业化。特别是在由各种材料组成的阴极中,硫化物基无机固体电解质的不稳定性更加突出。本研究将碳酸盐基离子导电聚合物引入阴极,以保护阴极材料并抑制硫化物电解质的反应性。电化学光谱、X 射线光电子能谱和扫描电子显微镜等多种仪器证实了聚合物电解质与硫化物基无机固态电解质接触时的化学和电化学稳定性。将离子导电聚合物应用于阴极时,硫化物基固态电池在 100 个循环周期内显示出稳定的电化学性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life

Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life

Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life

Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state batteries. The high ion conductivity, mechanical characteristics, and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid electrolytes. However, the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state batteries. Particularly, the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode, comprising various materials. In this study, carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide electrolytes. Several instruments, including electrochemical spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid electrolytes. Sulfide-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode.

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来源期刊
Energy & Environmental Materials
Energy & Environmental Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
17.60
自引率
6.00%
发文量
66
期刊介绍: Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.
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