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Nature Materials 多功能單離子聚合物電解質(zhì)文章Single-ion BAB triblock copolymers
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最近,Nature Materials上由法國(guó)科學(xué)家新發(fā)表的一篇關(guān)于多功能單離子聚合物電解質(zhì)的文章——Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries,由于液體和固體電解質(zhì)的本身的一些缺陷限制了他們?cè)阡囯x子電池中的應(yīng)用,本文作者開發(fā)了新型的聚合物電解質(zhì),該電解質(zhì)是基于聚苯乙烯片段組成的多陰離子嵌段共聚物,其鋰離子傳遞數(shù)接近1,并具有極好的機(jī)械性能和穩(wěn)定的5V電化學(xué)窗口,由此組成的電池性能超過傳統(tǒng)的基于聚合物的電池。 Electrochemical energy storage is one of the main societal challenges of this century. The performances of classical lithium-ion technology based on liquid electrolytes have made great advances in the past two decades, but the intrinsic instability of liquid electrolytes results in safety issues. Solid polymer electrolytes would be a perfect solution to those safety issues, miniaturization and enhancement of energy density. However, as in liquids, the fraction of charge carried by lithium ions is small (<20%), limiting the power performances. Solid polymer electrolytes operate at 80 °C, resulting in poor mechanical properties and a limited electrochemical stability window. Here we describe a multifunctional single-ion polymer electrolyte based on polyanionic block copolymers comprising polystyrene segments. It overcomes most of the above limitations, with a lithium-ion transport number close to unity, excellent mechanical properties and an electrochemical stability window spanning 5 V versus Li+/Li. A prototype battery using this polyelectrolyte outperforms a conventional battery based on a polymer electrolyte. 1.jpg 2.jpg 3.jpg [ 來自科研家族 鋰電池世界 ] |
鋰電資源共享 | 先進(jìn)材料 | 鋰電-電化學(xué) | 科技相關(guān) |
高分子方面 | 鋰電池 | 關(guān)于鋰電的資源好貼 | Lithium batteries |
高低溫鋰離子電池 | 凝膠電解質(zhì) | 高分子資源收納箱F |



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