Revealing better organic sodium battery performance in ionic liquid electrolytes,Inorganic Chemistry Frontiers

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Revealing better organic sodium battery performance in ionic liquid electrolytes
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2021-09-03 , DOI: 10.1039/d1qi00964h
Weisheng Zhang ₁ , Huimin Sun _{1,

2} , Zhaopeng Sun ₁ , Shuai Liu ₁ , Weiwei Huang _{1,

3}

Affiliation

The commercialization of sodium ion batteries (SIBs) accelerated the research and development of electrode materials. Organic electrodes have less restriction on the battery system and have received increasing attention. However, how to avoid the dissolution of organic materials in traditional electrolytes is a crucial element. Based on the principle of “like dissolves like”, ionic liquid (IL) electrolytes could bring wide horizons due to differences in polarity. In this study, the sodium storage behavior of pillar[5]quinone (P5Q) and 0.3 M NaTFSI-PY13TFSI electrolyte with a large difference in polarity was investigated. Compared with traditional electrolytes, the record-high capacity was 258 mA h g⁻¹ over 500 cycles at 0.2 C, and the pseudocapacitance contribution can reach 74% at 1 mV s⁻¹, revealing its superb storage capacity. Therefore, IL electrolytes would vigorously promote the commercialization of organic electrodes.

中文翻译：

揭示离子液体电解质中更好的有机钠电池性能

钠离子电池（SIBs）的商业化加速了电极材料的研发。有机电极对电池系统的限制较少，受到越来越多的关注。然而，如何避免有机材料在传统电解质中的溶解是一个关键因素。基于“同类相溶”的原理，离子液体（IL）电解质由于极性的差异可以带来广阔的视野。在本研究中，研究了柱[5]醌（P5Q）和极性差异较大的0.3 M NaTFSI-PY13TFSI电解质的储钠行为。与传统电解质相比，在 0.2 C、500 次循环中创纪录的高容量为 258 mA hg ^-1，在 1 mV s ^{-1 时}赝电容贡献可达 74%，彰显其超凡的存储能力。因此，IL电解质将有力地促进有机电极的商业化。

更新日期：2021-09-17

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