Sodium Dual-Ion Batteries with Concentrated Electrolytes.
Sodium Dual-Ion Batteries with Concentrated Electrolytes.
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具有浓缩电解质的钠双离子电池。
DOI：
10.1002/cssc.202201583
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发表时间：
2023
期刊：
影响因子：
8.4
通讯作者：
Guo Z
中科院分区：
文献类型：
--
作者：
Guo Z
钠基双离子电池（DIB）是一类后锂电池技术，具有充电速度极快、成本效益高、原材料天然丰度高等优点。在高电压（约 5.0 V）下工作时，经典碳酸盐电解质配方的分解以及随后的容量衰减仍然是这些系统开发中的主要缺点。在此，研究了 Na-DIB 在不同常用电解质体系中的性能，并优化了高浓度 (3mNaPF6) 和富氟碳酸盐基配方，与文献相比（基于能量和功率密度，在纽扣电池上计算，仅使用活性材料的活性质量），获得了良好的性能。
Na‐based dual‐ion batteries (DIBs) are a class of post‐lithium technology with advantages including extremely fast charging, cost‐effectiveness, and high natural abundance of raw materials. Operating up to high voltages (≈5.0 V), the decomposition of classic carbonate‐based electrolyte formulations and the subsequent fade of capacity continues to be a major drawback in the development of these systems. Here, the performance of a Na‐DIB was investigated in different commonly employed electrolyte system, and a highly concentrated (3mNaPF6) and fluorine‐rich carbonate‐based formulation was optimized to achieve a good performance when compared with literature (based on energy and power density, calculated at coin cell and only using the active mass of active materials).