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最新Chem Soc Rev封面綜述文章:超快充放電鋰離子電池的電極材料設計 已有25人參與
Rational Material Design for Ultrafast Rechargeable Lithium-ion Batteries
Rechargeable lithium-ion batteries (LIBs) are important electrochemical energy storage devices for consumer electronics and emerging electrical/hybrid vehicles. However, one of the formidable challenges is to develop ultrafast charging LIBs with the rate capability at least one order of magnitude (>10 C) higher than that of the currently commercialized LIBs. This tutorial review presents the state-of-the-art developments in ultrafast charging LIBs by the rational design of materials. First of all, fundamental electrochemistry and related ionic/electronic conduction theories identify that the rate capability of LIBs is kinetically limited by the sluggish solid-state diffusion process in electrode materials. Then, several aspects of the intrinsic materials, materials engineering and processing, and electrode materials architecture design towards maximizing both ionic and electronic conductivity in the electrode with a short diffusion length are deliberated. Finally, the future trends and perspectives for the ultrafast rechargeable LIBs are discussed. Continuous rapid progress in this area is essential and urgent to endow LIBs with ultrafast charging capability to meet huge demands in the near future.
可充電鋰離子電池是消費電子產(chǎn)品和新興電/混合動力汽車重要的電化學能量存儲設備。然而,其挑戰(zhàn)之一是,開發(fā)超快充電電池的充電速率具有比當前商品化電池的高至少一個數(shù)量級。這個綜述文章提出了目前的最先進的發(fā)展超快電池的材料合理設計方案。首先,論文先總結(jié)了基本的電化學和相關(guān)的離子/電子傳導理論,確定LIBS的速率能力是由電極材料的固態(tài)擴散過程所限制。然后,討論了本征材料,材料修飾和加工,以及擴散長度的電極最大化兩者的離子和電子導電性的電極材料結(jié)構(gòu)設計等幾個方面。最后,未來的發(fā)展趨勢和前景的超快充電電池進行了討論。當前,在超快充電電池的研究方面是必要和迫切的,以滿足在不久的將來巨大能量儲存的需求。
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