An integrated power pack of dye-sensitized solar cell and Li battery based on double-sided TiO2 nanotube arrays.

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 TiO(2) nanotube (NTs) arrays. The solar cell part is made of two different cosensitized tandem solar cells based on TiO(2) 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/cm(2). The power pack can be charged to about 3 V in about 8 min, and the discharge capacity is about 38.89 μAh under the discharge density of 100 μA. 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.

[1]  Yi Cui,et al.  Photovoltaics: More solar cells for less. , 2010, Nature materials.

[2]  Bin Liu,et al.  Growth of oriented single-crystalline rutile TiO(2) nanorods on transparent conducting substrates for dye-sensitized solar cells. , 2009, Journal of the American Chemical Society.

[3]  Craig A. Grimes,et al.  Highly-ordered TiO2 nanotube arrays up to 220 µm in length: use in water photoelectrolysis and dye-sensitized solar cells , 2007 .

[4]  Jian Jiang,et al.  Building one-dimensional oxide nanostructure arrays on conductive metal substrates for lithium-ion battery anodes. , 2011, Nanoscale.

[5]  Charles M. Lieber,et al.  Coaxial silicon nanowires as solar cells and nanoelectronic power sources , 2007, Nature.

[6]  M. Armand,et al.  Issues and challenges facing rechargeable lithium batteries , 2001, Nature.

[7]  Peidong Yang,et al.  Nanowire dye-sensitized solar cells , 2005, Nature materials.

[8]  P. Bruce,et al.  Nanostructured materials for advanced energy conversion and storage devices , 2005, Nature materials.

[9]  Yingke Zhou,et al.  Lithium Insertion into TiO2 Nanotube Prepared by the Hydrothermal Process , 2003 .

[10]  Zhong Lin Wang,et al.  Microfibre–nanowire hybrid structure for energy scavenging , 2009, Nature.

[11]  Changjian Lin,et al.  High efficiency dye-sensitized solar cells based on hierarchically structured nanotubes. , 2011, Nano letters.

[12]  Craig A Grimes,et al.  Long vertically aligned titania nanotubes on transparent conducting oxide for highly efficient solar cells. , 2009, Nature nanotechnology.

[13]  Candace K. Chan,et al.  High-performance lithium battery anodes using silicon nanowires. , 2008, Nature nanotechnology.

[14]  M. Dresselhaus,et al.  High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys , 2008, Science.

[15]  Zongping Shao,et al.  A thermally self-sustained micro solid-oxide fuel-cell stack with high power density , 2005, Nature.

[16]  Zhong Lin Wang,et al.  Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays , 2006, Science.

[17]  Tsutomu Miyasaka,et al.  Tin-Based Amorphous Oxide: A High-Capacity Lithium-Ion-Storage Material , 1997 .

[18]  J. Tarascon,et al.  Nano-sized transition-metal oxides as negative-electrode materials for lithium-ion batteries , 2000, Nature.

[19]  M. Grätzel,et al.  A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films , 1991, Nature.