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

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

Research output: Contribution to journalReview articlepeer-review

43 Scopus citations

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.

Original languageEnglish
Pages (from-to)7435-7447
Number of pages13
JournalNano Letters
Volume21
Issue number18
DOIs
StatePublished - 22 Sep 2021

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society.

Keywords

  • branched polymers
  • ionic conductivity
  • lithium-based batteries
  • polymer electrolytes
  • topological structure

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