The development of conventional rechargeable batteries based on intercalation chemistry in the fields of fast charge and low temperature is generally hindered by the sluggish cation-desolvation process at the electrolyte/electrode interphase. To address this issue, a novel desolvation-free sodium dual-ion battery (SDIB) has been proposed by using artificial graphite (AG) as anode and polytriphenylamine (PTPAn) as cathode. Combining the cation solvent co-intercalation and anion storage chemistry, such a SDIB operated with ether-based electrolyte can intrinsically eliminate the sluggish desolvation process. Hence, it can exhibit an extremely fast kinetics of 10 Ag⁻¹ (corresponding to 100C-rate) with a high capacity retention of 45 %. Moreover, the desolvation-free mechanism endows the battery with 61 % of its room-temperature capacity at an ultra-low temperature of −70 °C. This advanced battery system will open a door for designing energy storage devices that require high power density and a wide operational temperature range.

中文翻译：

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用于高功率密度和极低温的无去溶剂化钠双离子化学

传统的基于插层化学的可充电电池在快速充电和低温领域的发展通常受到电解质/电极界面缓慢的阳离子去溶剂化过程的阻碍。为了解决这个问题，人们提出了一种以人造石墨（AG）为负极，聚三苯胺（PTPAn）为正极的新型无去溶剂化钠双离子电池（SDIB）。结合阳离子溶剂共嵌入和阴离子存储化学，这种使用基于醚的电解质操作的 SDIB 可以从本质上消除缓慢的去溶剂化过程。因此，它可以表现出极快的动力学 10 Ag ^-1（对应于 100C 倍率）具有 45% 的高容量保持率。此外，无去溶剂化机制使电池在-70°C的超低温下具有室温容量的61%。这种先进的电池系统将为设计需要高功率密度和宽工作温度范围的储能设备打开一扇大门。