Recently, researcher Shen Guozhen, State Key Laboratory of Superlattice, Institute of Semiconductors, Chinese Academy of Sciences, and associate researcher Li Dongdong, Shanghai Institute of Advanced Studies, Chinese Academy of Sciences, proposed a new concept of integrated photocapacitors based on double-sided titania nanotube array assembly The doping modification has successfully prepared an integrated optical capacitor with excellent energy conversion and storage efficiency, and high cycle stability. Related results were published in Advanced Functional Materials (2014, 24, 1840-1846.) Hosted by Wiley in Germany in April 2014. The achievement was also selected into the cover paper of the journal and reported. The relevant content is as follows: Sustainable energy conversion and storage technologies provide an important development direction for meeting future green and environmentally friendly energy requirements. With nearly 15% photoelectric conversion efficiency and low cost, dye-sensitized solar cells are considered to be one of the most competitive photovoltaic cells. At the same time, electrochemical supercapacitors have received extensive attention in emerging industries such as electronic products, electric vehicles and smart grids due to their ultra-high power density and cycle life. However, in the same working system, the currently used photoelectric conversion devices and energy storage devices are connected through external circuits and independently controlled, which inevitably results in wasted space and extra energy consumption. In response to this problem, the research team of Shen Guozhen, a researcher at the Institute of Semiconductors, Chinese Academy of Sciences, and Li Dongdong, an associate researcher at the Shanghai Advanced Institute of the Chinese Academy of Sciences, proposed a new concept of integrated photocapacitors based on the assembly of double-sided titanium dioxide nanotube arrays The doping modification has successfully prepared an integrated optical capacitor with excellent energy conversion and storage efficiency, and high cycle stability. Related results were published in Advanced Functional Materials. The team prepared an array of titanium dioxide nanotubes arranged on both sides of the titanium substrate by a simple electrochemical anodization method. Using one side of the TiO2 nanotube array as the photoanode to assemble into a dye-sensitized solar cell, a photoelectric conversion efficiency of 3.17% was obtained. At the same time, the other side of the titanium dioxide nanotube array is treated with hydrogen plasma, and then used as the negative electrode of the supercapacitor together with the titanium substrate in the dye-sensitized solar cell, combined with another single-sided titanium dioxide film after the same treatment as the positive electrode, assembled into Symmetrical supercapacitor (its area specific capacitance reaches 1.100 mF / cm2). The counter electrode of the solar cell part and the positive electrode of the super capacitor part are connected and controlled to form an integrated optical capacitor device. Under the visible light irradiation, the test results of the integrated device show that: (1) A pulsed photocurrent of 2.6 mA / cm2 is rapidly generated within 1 second of light charging, and then gradually decayed to 0.025 mA / cm2. At the same time, the voltage of the photocapacitor gradually reaches 0.61V, which is close to the open circuit voltage of the solar cell (0.63V), thereby achieving fast charging of the capacitor. (2) Within this second, the photoelectric capacitor achieved a total photoelectric conversion and energy storage efficiency of up to 1.64% and a maximum energy storage efficiency of 51.60%. (3) After 100 cycles, the optical capacitor can still maintain stable light charging and constant current discharge effects, and the specific capacitance retention rate is as high as 96.5%. After further connecting multiple optical capacitors in series, the output voltage can be effectively increased to 2.5V, which enhances the practicality of the optical capacitor. This work validates the feasibility of the integrated optical capacitor design concept, and is expected to be applied in lightweight, portable, and energy-saving devices. At the same time, the use of flexible substrates is also expected to achieve a flexible integrated optical capacitor system, which will be widely used in next-generation flexible, wearable devices. Foldable Gazebo,Pop Up Gazebo Tent,Gazebo Canopy Tent,Portable Pop Up Gazebo HESHAN YUEHAN UMBRELLA MANUFACTURING CO., LTD , https://www.sunplustent.com