An Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 Nanotube Arrays

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• 作者：Wenxi Guo ; Xinyu Xue ; Sihong Wang ; Changjian Lin ; Zhong Lin Wang
• 刊名：Nano Letters
• 出版年：2012
• 出版时间：May 9, 2012
• 年：2012
• 卷：12
• 期：5
• 页码：2520-2523
• 全文大小：325K
• 年卷期：v.12,no.5(May 9, 2012)
• ISSN：1530-6992

文摘

We present a new approach to fabricate an integrated power pack by hybridizing energy harvest and storage processes. This power pack incorporates a series-wound dye-sensitized solar cell (DSSC) and a lithium ion battery (LIB) on the same Ti foil that has double-sided TiO₂ nanotube (NTs) arrays. The solar cell part is made of two different cosensitized tandem solar cells based on TiO₂ nanorod arrays (NRs) and NTs, respectively, which provide an open-circuit voltage of 3.39 V and a short-circuit current density of 1.01 mA/cm². The power pack can be charged to about 3 V in about 8 min, and the discharge capacity is about 38.89 渭Ah under the discharge density of 100 渭A. The total energy conversion and storage efficiency for this system is 0.82%. Such an integrated power pack could serve as a power source for mobile electronics.

Keywords:

Solar cell; lithium ion battery; TiO₂ nanotubes; mobile energy