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兹维特诱导的界面电位调节稳定了近固态离子电池中的微型阳极

Jinbao Wang¹, Chuce Wu¹, Yuexin Wu¹

¹State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.

Angewandte Chemie (International ed. in English)

|December 24, 2025

概括

一种新的zwitterion修饰的准固态电解质稳定了离子电池中的微米大小的阳极. 这种界面电位调节增强了离子传输和固体电解质相间均性,以提高电池性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
电池技术电池技术

背景情况:

微米大小的 (μ-Si) 为离子电池提供了高能量密度,但由于无法控制的接口问题,其容量减弱.
不同质的离子运输和固体电解质间相 (SEI) 破裂限制了μ-Si阳极的实际应用.

研究的目的:

开发一种准固态电解质,以调节μ-Si/电解质界面上的界面电位分布.
为了稳定μ-Si阳极,并使高能离子电池能够长期循环使用.

主要方法:

在现场聚合3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 硫酸 (VIPS) 形成一个修改后的聚合物电解质 (PVIPSE).
利用伊米达和硫酸盐组的协同作用,用于静电选和Li+协调.
使用扫描电化学显微镜可视化界面潜力和SEI统一性.

主要成果:

PVIPSE有效地使接口电位相等并使Li+流量在μ-Si阳极上的流量均化.
+硫酸盐协调促进形成一个统一的,富含无机物的SEI层.
扫描电化学显微镜证实了减少界面异质性和改善SEI统一性,导致稳定的循环.

结论:

接口电位调节是稳定像μ-Si.这样的高容量合金阳极的可行策略.
修改了zwitterion的PVIPSE电解质使离子电池中的μ-Si阳极能够长期稳定循环.
这种方法为溶解工程提供了一个直角的设计原理,并为电池阳极稳定提供了机械增强.

关键词:

接口潜力调节接口潜力调节离子电池是一种离子电池.微米大小的.固体电解质相间阶段兹维特里昂基尔电解质是Zwitterionic的电解质.

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