Advanced Functional Materials·· 4 小时前精选AI 评分65
核壳溶剂化结构低浓度电解质使锂金属软包电池达到475 Wh kg⁻¹
Core–Shell Solvation Structure Engineering Enables Practical Lithium Metal Batteries With 475 Wh Kg −1
AI 导读
研究团队设计了一种基于功能分区核壳溶剂化策略的低浓度电解质，以高给体数的甲基砜主导Li⁺配位内层、低给体数低粘度的氟代碳酸乙烯酯调控外层溶剂化环境与界面化学。该电解质离子电导率达4.42 mS cm⁻¹，Li⁺迁移数为0.74，并诱导形成梯度SEI以促进锂均匀沉积。
推荐理由
原文给出核壳溶剂化结构下电解质的电导率与锂离子迁移数，并附多体系软包电池循环数据，可据此判断低浓度电解质的实用边界。
创新点
用高给体数甲基砜与低给体数低粘度氟代碳酸乙烯酯分工构建核壳溶剂化结构，在低浓度电解质中同时获得快速去溶剂化、高离子电导率与高Li⁺迁移数，并由此诱导梯度SEI。
图表、补充材料与最终表述以原文为准。阅读原文
来源：Advanced Functional Materials · doi.org
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