查询词典 cathode

To improve the electrochemical performance of LiFePO4, the high temperature solid-state reaction method with two-stage sintering assistant by milling was used to synthesize the LiFePO4/C composite cathode materials by doping different carbon sources (Sucrose, Coal tar asphaltum and Coal tar asphaltum after improving-identifier "M").

为了提高LiFePO4的电化学性能，采用球磨辅助分段焙烧高温固相法，在前躯体中掺入不同的碳源（蔗糖、煤焦油沥青、改性后的煤焦油沥青－标记为M），合成了锂离子蓄电池LiFePO4/C正极材料。

Precursor LiMgxMn2-xO4 is prepared by the method of phase transfer, and then the precursor is sintered in the air astrosphere at a certain temperature for a certain time to get cathode material for lithium ion battery.

利用相转移法合成了LiMgxMn2-xO4前驱体，在电炉中于一定温度下烧结一定时间，得到锂离子电池正极材料粉体，并利用XRD、SEM、IR等对材料粉体进行结构形态表征。

The characteristics of pentacene/perylene derivatives based organic solar cells are investigated in this thesis Donor and acceptor layers are pentacene and N N'-dioctyl-3 4 9 10-perylenetetracarboxylic diimide (PTCDI-2~13C) respectively Twelve organic solar cells with pentacene/PTCDI-2~13C heterojunctions were fabricated to study the influence of various alkylic perylene derivatives on the power conversion efficiency Under the sunlight simulator with AM1 5G filter and 100 mW/cm2 the solar cell of pentacene/PTCDI-7C heterojunction with cathode of Ag/Al bilayer has the best performance among the devices with pentacene/PTCDI-2~13C heterojunctions In PL spectrum analyses the pentacene/PTCDI-7C film had lower recombination rate than the other pentacene/PTCDI-2~13C films; therefore more excitons could reach the P/N junction and enhance short-circuit current Furthermore the PTCDI-7C film grown on the surface of penatcene was more matched than other PTCDI films analyzed by the PL peak shifts of 10 nm and 45 nm thick PTCDI-2~13C and images of atomic force microscope More lattice match between the films of pentacene and PTCDI resulted in fewer defects in P/N junction and more carries can reach electrodes Accordingly the power conversion efficiency approach 2% was obtained from the solar cell with the active layer of pentacene/PTCDI-7C

本研究探讨以五环素/骈苯衍生物异质接面太阳能电池之特性，利用pentacene作为电子施体有机材料，PTCDI -2C~13C作为电子受体有机材料，制作出异质接面为pentacene/ PTCDI-2C ~13C等12种有机太阳能电池，比较不同碳数的骈苯衍生物对於有机太阳能电池之光电转换效率之影响。在AM1 5G、100 mW/cm2的模拟太阳光下，以pentacene/PTCDI-7C异质接面太阳能电池具有短路电流9 882 mA/cm2、开路电压0 376 V、填充因数0 523及光电转换效率达1 945%，皆比其他pentacene/PTCDI-2C ~13C异质接面太阳能电池来的大。由薄膜分析可知PTCDI-7C在这12种太阳能电池中具有较低的电子电洞复合发光效率，可以让较多激子到达异质接面进行电荷分离，减少电子电洞对复合发光的机率；此外，由光激发萤光光谱之峰值位移配合原子力显微镜表面结构图，可以得知当PTCDI-7C成长在pentacene上时会顺著pentacene的结构成长薄膜，故较无缺陷产生在P/N接面处；而在其他结构下则无此现象产生，致使在pentacene/PTCDI-7C薄膜中的载子有较大的机会可以移动至电极，使光电流提高，进而使光电转换效率提高。

In this thesis, the performances of liquid crystal display with different backlight light sources were analyzed by the optical spectrometer. The backlight sources included three different kinds of white light-emitting diodes and a traditional cold cathode fluorescent lamp.

中文摘要本论文利用光谱分析仪量测不同背光源与液晶面板搭配的显示特性，著重在色彩方面的探讨，所使用的背光源有三种不同的白光LED：1。

The experimental comparisons and researches to p-type silicon cone and wedge arrays coated by four kinds of metals with same structures are done, and show that the gold and aluminum will be hopeful cathode materials of field emission devices which operate at low vacuum and atmospheric pressure.

对结构相同的覆四种不同金属层（Au，Al，Ni，Cr）的p型硅尖锥和楔形体阵列进行了实验比较研究，表明金、铝可望成为低真空和大气压环境下工作的场发射器件的阴极材料。

The reseach team,led by Angela Belcher,were able to creat both a cathode and an anode.

由安吉拉。贝尔彻领导的研究团队成功地研制出了正负两极。

Olivine-type LiFePO4 are recently expected to have a bright future as a potential cathode material of large scale moveable lithium ion batteries for its high theoretical capacity(170 mAh/g)and voltage(about 3.5 V versus Li/Li+),good stability both at room temperature and high temperature,low cost and environmental benignancy.

橄榄石型LiFePO4具有170 mAh/g的理论比容量和约3.5 V的电压、较好的常温和高温稳定性、低廉的价格和优良的环保性能，有望作为大型移动式锂离子电池的正极材料。

The olivine lithium iron phosphate (LiFePO4) has the potential to be a new commercial cathode material for lithium ion battery due to its abundant resources,low cost,non-toxicity,environmental benignancy,high theoretical capacity,good thermal stability and excellent cycling performance.

橄榄石型磷酸铁锂正极材料具有原料来源丰富、价廉、无毒、环境友好、理论容量高、热稳定性和循环性能好等特点，有望成为新一代锂离子电池正极材料。

This is because McIntosh maintains the voltage from each screen grid to cathode constant by the unity coupling between the two halves of the bifilar winding.

这是因为麦氏是用单一耦合双线并绕的两半部分来维持廉栅极对阴极的电位恒定。

The changes of free energy and enthalpy were calculated in terms of depolarization values on Al cathode. Thermodynamic meaning of depolarization was discussed in details and the empirical relation between binary alloy type and depolarization type was proposed.

根据锂离子在铝阴极上产生的去极化值求出铝和锂发生合金化反应的热力学意义，提出二元合金类型与极化类型之间的经验关系。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。