High-Safety and Low-Cost Photoassisted Chargeable Aqueous Sodium-Ion Batteries with 90% Input Electric Energy Savings

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• 作者：Qi Li ; Na Li ; Yang Liu ; Yarong Wang and Haoshen Zhou
• 刊名：Advanced Energy Materials
• 出版年：2016
• 出版时间：September 21, 2016
• 年：2016
• 卷：6
• 期：18
• 全文大小：2192K
• ISSN：1614-6840

文摘

A photoassisted chargeable aqueous sodium-ion battery employs the aqueous Na₂S₄ anolyte and NaI catholyte, and a TiO₂ photoelectrode integrated into the catholyte for capturing solar energy. Upon charging under illumination, the battery can be charged at an ultra low voltage of 0.08 V, which is much lower than the discharging voltage, resulting in the ≈90% input electric energy savings.