Abstract: The invention discloses a multi-plug DC charging pile system, the number of whose charging modules can reach more than 6, while the number of plugs is only half of the number of charging modules. Each charging module can be switched to any plug. At the same time, the economy, practicability and stability of the product are improved. The multi-plug DC charging pile system includes: six DC charging modules, three plugs, a main control board, a switching control board and sixteen DC contactors. The main control board controls the output of six DC charging modules through CAN. The main control board is connected with the switching control board. The main control board is connected with three plugs through CAN. The sixteen DC contactors are connected with one of three plugs respectively. The switching control board controls the on-off of sixteen DC contactors to control the DC charging power obtained by three plugs.

Abstract: The present invention relates to a cathode composed of a perovskite-type or fluorite-type mixed metal oxide containing molybdenum, to a composite comprising the mixed metal oxide and to a solid oxide fuel cell comprising the cathode. The cathode mixed metal oxide has an empirical formula unit: EaTbMocOn wherein: T is one or more transition metal elements other than Mo; E is one or more metal elements selected from the group consisting of lanthanide metal elements, alkali metal elements, alkaline earth metal elements, Pb and Bi; and a, b, c, and n are non-zero numerals which may be the same or different for each element.

Abstract: The present invention relates to a mixed metal oxide of formula SrM1-xTixO3 wherein x is 0>x>1 and M is Hf or Zr, such as a strontium-hafnium-titanium oxide orstrontium-zirconium-titanium oxide, and to a functional device comprising the mixed metal oxide.