WUHAN, China (July 7, 2015) - Wuhan Optoelectronics Forum No. 99 was successfully held in Auditorium A101 at Wuhan National Laboratory for Optoelectronics (WNLO) in the afternoon of July 7.
Nanomaterials, such as carbon nanotubes, metal oxides (or sulfide) nanowires and nanoparticles, have great applications in electronics, optics, materials science, energy conversion and storage due to their interesting structural and physical properties which can be designed at the synthesis level. In this talk, (1) the electrochemical lithiation process of cobalt sulfide (Co9S8) filled carbon nanotubes will be discussed. A single crystalline Co9S8 nanowire fills the cavity of a multi-walled carbon nanotube to form a core-shell nanowire, which is then used to build a rechargeable battery to observe the in-situ electrochemical lithiation-delithiation process. The results show that the encapsulation of Co9S8 within a closed carbon nanotube has prevented its pulverization during expansion-contraction cycles. (2) Nano-structured materials have played important roles in solution processed solar cells. As an example, the synthesis of rutile TiO2 nanorod array and its application as photoanode for dye-sensitized solar cells will be discussed. Furthermore, the improvement of the efficiency of perovskite solar cells by using Nb-doped TiO2 nanorods as photoanode will be presented.
Prof. Wenzhi Li received his Ph.D. in Condensed Matter Physics from the Institute of Physics, Chinese Academy of Sciences in 1997. He is now a professor in the Department of Physics at Florida International University. He has more than 90 scientific publications in peer reviewed journals such as Science, Nature, ACS Nano, Carbon, Nanotechnology, and Applied Physics Letters. He received the 1999 National 100 Excellent Doctoral Dissertation Award in China, the 1st Prize Award for Natural Science from the Chinese Academy of Sciences in 2001, the 2nd Prize Award for National Natural Science from the State Council of China in 2003, the 1st Place Award for high paper citation from the Science and Technology Index Center in China in 1999 and 2000, the ISI Citation Classic Award in 2000, Chemical Physics Letters Most Cited paper 2003-2007 Award, and the US Natural Science Foundation Career Award 2006-2011. His published papers have been cited 4400 times. He is the first person in China to publish an article on carbon nanotube in Science. This article (Science 274 volume, page 1701, 1996) has been cited 1700 times. This work has laid a foundation for the research and development of carbon nanotube based electronic and optoelectronic devices.
