Nano Lett., 2012, 12 (5), pp 2520–2523

An Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 Nanotube Arrays Wenxi Guo†‡, Xinyu Xue†§, Sihong Wang†, Changjian Lin‡, and Zhong Lin Wang*† † School of Material Science and Engineering, Georgia Institute of Technology, Georgia 30332, United States ‡ State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China § College of Sciences, Northeastern University, Shenyang 110004, China Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China