作者
Gang Wang, Benjamin Kohn, Ulrich Scheler, Faxing Wang, Steffen Oswald, Markus Löffler, Deming Tan, Panpan Zhang, Jian Zhang, Xinliang Feng
发表日期
2020/1
期刊
Advanced Materials
卷号
32
期号
4
页码范围
1905681
简介
The intrinsic advantages of metallic Zn, like high theoretical capacity (820 mAh g−1), high abundance, low toxicity, and high safety have driven the recent booming development of rechargeable Zn batteries. However, the lack of high‐voltage electrolyte and cathode materials restricts the cell voltage mostly to below 2 V. Moreover, dendrite formation and the poor rechargeability of the Zn anode hinder the long‐term operation of Zn batteries. Here a high‐voltage and durable Zn–graphite battery, which is enabled by a LiPF6‐containing hybrid electrolyte, is reported. The presence of LiPF6 efficiently suppresses the anodic oxidation of Zn electrolyte and leads to a super‐wide electrochemical stability window of 4 V (vs Zn/Zn2+). Both dendrite‐free Zn plating/stripping and reversible dual‐anion intercalation into the graphite cathode are realized in the hybrid electrolyte. The resultant Zn–graphite battery performs stably at …
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