Photo-rechargeable zinc-ion batteries,Energy & Environmental Science

当前位置： X-MOL 学术 › Energy Environ. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Photo-rechargeable zinc-ion batteries
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-06-23 , DOI: 10.1039/d0ee01392g
Buddha Deka Boruah _{1,

2,

3,

4,

5} , Angus Mathieson _{1,

2,

3,

4,

5} , Bo Wen _{1,

2,

3,

4,

5} , Sascha Feldmann _{3,

5,

6,

7} , Wesley M. Dose _{1,

2,

3,

4,

5} , Michael De Volder _{1,

2,

3,

4,

5}

Affiliation

Batteries that can be directly recharged by light would offer a new approach to balancing the unpredictable energy surpluses and deficits associated with solar energy. Here, we present a new aqueous zinc-ion battery (photo-ZIB) that can directly harvest sunlight to recharge without the need for external solar cells. The light charging process is driven by photo-active cathodes consisting of a mixture of vanadium oxide (V₂O₅) nanofibers, poly(3-hexylthiophene-2,5-diyl) and reduced graphene oxide, which provide the desired charge separation and storage mechanism. This process is studied using photodetectors, transient absorption spectroscopy and electrochemical analysis in dark and light conditions. The V₂O₅ cathodes have gravimetric capacities of ∼190 mA h g⁻¹ and ∼370 mA h g⁻¹ in dark and illuminated conditions respectively and photo-conversion efficiencies of ∼1.2%. Finally, we demonstrate a fully functional photo-ZIB with a ∼64 cm² optical window in pouch cell format.

中文翻译：

可充电的锌离子电池

可以通过光直接充电的电池将提供一种新方法来平衡与太阳能相关的不可预测的能源过剩和不足。在这里，我们介绍了一种新型的水性锌离子电池（photo-ZIB），它可以直接收集阳光以进行充电，而无需外部太阳能电池。光充电过程由光敏阴极驱动，该光敏阴极由氧化钒（V ₂ O ₅）纳米纤维，聚（3-己基噻吩-2,5-二基）和还原的氧化石墨烯的混合物组成，可提供所需的电荷分离和存储机制。在黑暗和明亮的条件下，使用光电探测器，瞬态吸收光谱法和电化学分析法对该过程进行了研究。V ₂ O ₅阴极在黑暗和光照条件下的重力容量分别约为190 mA hg ^-1和370 mA hg ^-1，光转换效率约为1.2％。最后，我们展示了一个功能齐全的photo-ZIB，具有约64 cm ^2的光学窗口（袋式细胞格式）。

更新日期：2020-08-14

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11