Star Brush Block Copolymer Electrolytes with High Ambient-Temperature Ionic Conductivity for Quasi-Solid-State Lithium Batteries
Source abstract
Abstract
We report high-performance star brush block copolymer electrolytes (SBBCEs) composed of 2-arm star polymer of [poly[poly(ethylene glycol) methyl ether acrylate]-b-polystyrene]2. The physically crosslinked structure endows SBBCEs with excellent thermal stability and considerable mechanical strength, high ionic conductivity of 2.1 × 10–4 S cm–1 at 28 °C, wide electrochemical stability window up to 5.6 V, and good interfacial compatibility with lithium anode. Assembled LiFePO4|SBBCE|Li and Ni-rich LiNi0.89Co0.09Mg0.02O2|SBBCE|Li cells deliver superior ambient-temperature cycling performance with high reversible capacities, high Coulombic efficiency, and outstanding cyclic stability at considerable rate of 0.5 C. This proposed idea of employing physically crosslinked structure of brush block copolymer without any chemical crosslinker may broaden a new way to design high-performance polymer electrolytes.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Functional Polymer Materials of the Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
Key Laboratory of Advanced Energy Materials Chemistry of the Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, China
Funding
Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China
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