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| 1 | 如何利用ICE1PCS01/02设计低成本的PFC显示文摘 | Luo Junyang Jeoh Meng Kiat | 2006 | 今日电子2006,,12: | 1 |
| 2 | 采用CoolSET^(TM)-ICE2B265的30W开关电源设计显示文摘 | Meng Kiat Jeoh Junyang Luo Yew Ming Lik | 2002 | 电子产品世界2002,9,08B: | 1 |
| 3 | Thiol Ligand-Modified Au for Highly Efficient Electroreduction of Nitrate to Ammonia显示文摘Electroreduction of nitrate(NO_(3)-)to ammonia(NH_(3))is an environmentally friendly route for NH_(3)production,serving as an appealing alternative to the Haber-Bosch process.Recently,various noble metal-based electrocatalysts have been reported for electroreduction of NO_(3)-.However,the application of pure metal electrocatalysts is still limited by unsatisfactory performance,owing to the weak adsorption of nitrogen-containing intermediates on the surface of pure metal electrocatalysts.In this work,we report thiol ligand-modified Au nanoparticles as the effective electrocatalysts toward electroreduction of NO_(3)-.Specifically,three mercaptobenzoic acid(MBA)isomers,thiosalicylic acid(ortho-MBA),3-mercaptobenzoic acid(meta-MBA),and 4-mercaptobenzoic acid(para-MBA),were employed to modify the surface of the Au nanocatalyst.During the NO_(3)-electroreduction,para-MBA modified Au(denoted as para-Au/C)displayed the highest catalytic activity among these Au-based catalysts.At-1.0 V versus reversible hydrogen electrode(vs RHE),para-Au/C exhibited a partial current density for NH_(3)of 472.2 mA cm^(-2),which was 1.7 times that of the pristine Au catalyst.Meanwhile,the Faradaic efficiency(FE)for NH_(3)reached 98.7%at-1.0 V vs RHE for para-Au/C.The modification of para-MBA significantly improved the intrinsic activity of the Au/C catalyst,thus accelerating the kinetics of NO_(3)-reduction and giving rise to a high NH_(3)yield rate of para-Au/C. | Yuheng Wu Xiangdong Kong Yechao Su Jiankang Zhao Yiling Ma Tongzheng Ji Di Wu Junyang Meng Yan Liu Zhigang Geng Jie Zeng | 2024 | Precision Chemistry2024,2,3: | 0 |
| 4 | 针对共模雷电冲击试验的开关电源设计显示文摘雷电冲击是造成过应力最普遍的原因。一些消费电子设备,例如机顶盒和DVD播放器,通常都会含有调谐接收器。当交流电源线或者天线受到雷击时,雷电冲击就会通过这些通路在设备内部产生过电压或者过电流现象。本文向开关电源(SMPS)电路的设计者提供一些建议,指导如何恰当地设计SMPS以避免由雷击造成的故障或者破坏。 | Luo Junyang Kok Siu Kam He Yi Jeoh Meng Kiat | 2006 | 电子产品世界2006,,12S: | 0 |
| 5 | 适合SMPS应用的thinQ碳化硅肖特基二极管显示文摘 | Ilia Zverev Junyang Luo Meng Kiat Jeoh | 2003 | 电子设计应用2003,,7: | 0 |
| 6 | 使用TDA4863-2和SPP08N50C3设计的160W PFC电路显示文摘传统整流电路的电流畸变会导致低功率因数。各国的工业标准对电流失真而造成的低功率因数做出了严格的规定。随着笔记本电脑和LCD电视的性能的提高,其功耗也相应的增加,而其对功率因数的要求也不可避免。本文讨论的电路板是专门设计的低成本高性能功率因数校正(PFC)电路。该电路采用的控制器芯片TDA4863-2是一种用于控制宽输入电压有源PFC转换器的8管脚集成电路。这种IC以控制峰值电流的不连续模式(DCM)工作。TDA4863-2通过控制升压型转换器,使得从单相交流电网中流出电流为正弦,并输出稳定的直流电压。这种电路的工作就像是一个谐波滤波器,抑制常规整流电路中的电容器的脉冲充电电流产生的谐波电流。所获得的功率因数几乎为1。为了提高效率,采用第三代CooIMOS作为电力开关,它具有最低的单位面积导通电阻。 | Junyang Luo Simon Lim Meng Kiat Jeoh | 2004 | 世界电子元器件2004,,7: | 0 |
| 7 | Size controllable single-crystalline Ni-rich cathodes for high-energy lithium-ion batteries显示文摘A single-crystalline Ni-rich(SCNR)cathode with a large particle size can achieve higher energy density,and is safer,than polycrystalline counterparts.However,synthesizing large SCNR cathodes(>5μm)without compromising electrochemical performance is very challenging due to the incompatibility between Ni-rich cathodes and high temperature calcination.Herein,we introduce Vegard’s Slope as a guide for rationally selecting sintering aids,and we successfully synthesize size-controlled SCNR cathodes,the largest of which can be up to 10μm.Comprehensive theoretical calculation and experimental characterization show that sintering aids continuously migrate to the particle surface,suppress sublattice oxygen release and reduce the surface energy of the typically exposed facets,which promotes grain boundary migration and elevates calcination critical temperature.The dense SCNR cathodes,fabricated by packing of different-sized SCNR cathode particles,achieve a highest electrode press density of 3.9 g cm^(-3)and a highest volumetric energy density of 3000 Wh L^(-1).The pouch cell demonstrates a high energy density of 303 Wh kg^(-1),730 Wh L^(-1)and 76% capacity retention after 1200 cycles.SCNR cathodes with an optimized particle size distribution can meet the requirements for both electric vehicles and portable devices.Furthermore,the principle for controlling the growth of SCNR particles can be widely applied when synthesizing other materials for Li-ion,Na-ion and K-ion batteries. | Ji-Lei Shi Hang Sheng Xin-Hai Meng Xu-Dong Zhang Dan Lei Xiaorui Sun Hongyi Pan Junyang Wang Xiqian Yu Chunsheng Wang Yangxing Li Yu-Guo Guo | 2023 | National Science Review2023,10,2: | 0 |