Lithium-Conducting Branched Polymers: New Paradigm of Solid-State Electrolytes for Batteries

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2021-09-13 DOI:10.1021/acs.nanolett.1c02558

Shu-Meng Hao, Shuang Liang, Christopher D. Sewell, Zili Li, Caizhen Zhu*, Jian Xu, Zhiqun Lin*

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引用次数: 25

Abstract

The past decades have witnessed rapid development of lithium-based batteries. Significant research efforts have been progressively diverted from electrodes to electrolytes, particularly polymer electrolytes (PEs), to tackle the safety concern and promote the energy storage capability of batteries. To further increase the ionic conductivity of PEs, various branched polymers (BPs) have been rationally designed and synthesized. Compared with linear polymers, branched architectures effectively increase polymer segmental mobility, restrain crystallization, and reduce chain entanglement, thereby rendering BPs with greatly enhanced lithium transport. In this Mini Review, a diversity of BPs for PEs is summarized by scrutinizing their unique topologies and properties. Subsequently, the design principles for enhancing the physical properties, mechanical properties, and electrochemical performance of BP-based PEs (BP-PEs) are provided in which the ionic conduction is particularly examined in light of the Li⁺ transport mechanism. Finally, the challenges and future prospects of BP-PEs in this rapidly evolving field are outlined.

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锂导电支链聚合物:电池用固态电解质的新范例

过去几十年见证了锂基电池的快速发展。重要的研究工作已经逐渐从电极转向电解质，特别是聚合物电解质(PEs)，以解决安全问题并提高电池的储能能力。为了进一步提高聚乙烯的离子电导率，人们合理地设计和合成了各种支化聚合物。与线性聚合物相比，支链结构有效地提高了聚合物的节段迁移率，抑制了结晶，减少了链缠结，从而大大增强了bp的锂输运。在这篇迷你评论中，通过仔细研究pe的独特拓扑和特性，总结了各种bp。随后，提出了提高BP-PEs (BP-PEs)物理性能、机械性能和电化学性能的设计原则，并根据Li+输运机制特别研究了离子传导。最后，概述了bp - pe在这一快速发展领域面临的挑战和未来前景。

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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.