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RISS 인기검색어
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- 저자 : Shao Yanqun (검색결과 2 건)
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Effects of annealing holding time on capacitance performance of RuO2–IrO2–graphene/Ti electrodes
Yanhong Wang,Shanfeng Huang,Jie Guo,Qiongqiong Ma,Yanqun Shao,Kongfa Chen,Dian Tang 한국물리학회 2019 Current Applied Physics Vol.19 No.7
The thermal decomposition method was used to prepare composite electrodes of the Ruthenium oxide–Iridium oxide–Graphene (RuO2–IrO2–G). Scanning Electron Microscopy (SEM), X–ray diffraction analysis (XRD), and electrochemical tests were used to study the influence of different annealing holding time on the surface morphology, phase composition, and capacitive performance of the coatings. The results showed that more and more RuO2, IrO2 nanoparticles were observed on the surface and cracks of the coating as the annealing holding time increasing. The RuO2–IrO2–G/Ti electrode was obtained by annealing for 5 h. The coating of the electrode consists of a certain amount of amorphous phase and nano–crystalline phase, and it had good electronic conductivity and ionic conductivity. At the same time, the electrode was prepared at 5 h had the largest specific capacitance of 778.46 F/g, which increased by 430.89 F/g than the electrode was prepared at 1 h. In addition, the electrode also had superior capacitance performance, capacitance retention and power characteristics.
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Study on nanosized zircon powder based dual sensitive sensor
Huang Shizhen,Lin Wei,Chen Wei,Chen Wenzhe,Shao Yanqun 한국물리학회 2009 Current Applied Physics Vol.9 No.3
Study on the nanosized ceramic material of ZrO2 which has usually been used as electronic ceramics, function ceramics, structure ceramics and so on. The material of ZrO2 was made by low-temperature super alkaline condition. The powder was detected by XRD, and the result showed that the material was pure ZrO2. According to the Scherer formula computation, the ZrO2 average grain diameter was about 21 nm. The material was sensitive both to the ammonia and to the humidity. Full performance test was carried to the sensor made by the sensitive material. To 20 × 10-6 NH3, the sensitive is 3, and to 1000 × 10-6 NH3, the sensitive is 12.5. The sensor has good selectivity, and has almost no sensitive to else gases, so it is a good gas sensor with excellent selectivity. To 1000 × 10-6 NH3, the response time is 2 s, and recovering time is also only 27 s. The sensitive range of humidity is 25–98%RH under 25 ℃ . Both response and recovered time of humidity are less than 30s. The sensor realized the dual sensitive. Study on the nanosized ceramic material of ZrO2 which has usually been used as electronic ceramics, function ceramics, structure ceramics and so on. The material of ZrO2 was made by low-temperature super alkaline condition. The powder was detected by XRD, and the result showed that the material was pure ZrO2. According to the Scherer formula computation, the ZrO2 average grain diameter was about 21 nm. The material was sensitive both to the ammonia and to the humidity. Full performance test was carried to the sensor made by the sensitive material. To 20 × 10-6 NH3, the sensitive is 3, and to 1000 × 10-6 NH3, the sensitive is 12.5. The sensor has good selectivity, and has almost no sensitive to else gases, so it is a good gas sensor with excellent selectivity. To 1000 × 10-6 NH3, the response time is 2 s, and recovering time is also only 27 s. The sensitive range of humidity is 25–98%RH under 25 ℃ . Both response and recovered time of humidity are less than 30s. The sensor realized the dual sensitive.
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