New-Concept Metal-Based Artificial SEI Film of Polyimide Anode Material in Dual-Ion Batteries

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-02 DOI:10.1021/acs.nanolett.4c02791

Song Liu, Taoying Kong, Shimei Xu, Rengui Xiao, Xiang Ke

引用次数: 0

Abstract

Organic material polyimides (PI) are widely used in secondary batteries due to green safety, renewables, and structural designability. However, problems such as low conductivity and structural damage of polyimide electrode materials seriously limit its practical application. Herein, an innovative in situ modification method with CaCl₂ is used to construct pure Al metal-based artificial SEI film on the surface of PI to improve the electrochemical performance of organic dual-ion batteries. Compared with the pure PI material, it has a noticeable improvement in cycle performance. Importantly, characterization results of the physicochemical analysis show that the pure Al metal-based artificial SEI film formed in situ on the surface of the PI material plays a key role in isolating and improving the electrochemical performance of PI anode materials. The innovative approach offers an efficacious strategy to construct pure metal-based artificial SEI films for the practical implementation of organic batteries.

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双离子电池中聚酰亚胺负极材料的新概念金属基人工 SEI 膜

有机材料聚酰亚胺（PI）因其绿色安全、可再生性和结构可设计性而被广泛应用于二次电池中。然而，聚酰亚胺电极材料的低导电性和结构损伤等问题严重限制了其实际应用。本文采用一种创新的 CaCl2 原位改性方法，在聚酰亚胺表面构建了纯金属铝基人工 SEI 膜，以改善有机双离子电池的电化学性能。与纯 PI 材料相比，它在循环性能方面有明显改善。重要的是，物理化学分析的表征结果表明，在 PI 材料表面原位形成的纯铝金属基人工 SEI 膜在隔离和改善 PI 阳极材料的电化学性能方面发挥了关键作用。这种创新方法为构建纯金属基人工 SEI 膜提供了一种有效的策略，可用于有机电池的实际应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.