cathode current density 中文意思是什麼

cathode current density 解釋
陰極電流密度
  • cathode : n. 【電學】陰極，負極。
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  1. Oxygen diffusion transport and electrochemical reaction in the oxygen cathode of direct methanol fuel cell ( dmfc ) have been expressed with the tffa model. model calculation has been carried out to investigate the effects of structural parameters of the dmfc cathode on the electrode performance, which is respectively represented by the curve of cathode overpotential versus current density. much attention has been paid to parameters including the porosity of the reaction layer, the thickness of the thin - film on the flooded - agglomerate, the radius of the flooded - agglomerate, the volume fraction of the flooded - agglomerates in the reaction layer

    本文首先運用tffa模型描述直接甲醇燃料電池（ dmfc ）陰極氧氣的傳遞和電化學反應過程，研究了過電位-電流密度曲線受陰極結構參數變化的影響程度，其中著重考慮了以下幾個參數：催化層的孔隙率，浸漬聚集體薄膜的厚度，浸漬聚集體的半徑，浸漬聚集體在催化層中的體積分數。
  2. The results were shown as follows : ( 1 ) the electrolyte components for electroplating pb - sn coatings in fluoborate system were studied. the effects of concentrations of main salt, dissociative acid, inhibitor, antioxidation and surfactant on the cathode polarization curves of electroplating pb, sn and pb - sn alloys and contents of alloying element were investigated systematically. the scale of current density was confirmed using hull cell

    （ 1 ）研究了氟硼酸體系電鍍pb - sn合金鍍層的電解液組成，詳細討論了主鹽濃度、游離酸濃度以及阻化劑、抗氧化劑、表面活性劑等添加劑對氟硼酸體系電沉積pb 、 sn及pb - sn合金陰極極化曲線的影響和對pb - sn合金鍍層中合金含量的影響。
  3. Alcl3 + lialh4 system conforms to the relation of current efficiency and cur rent density of complex electrolysis lead to uniform distribution at cathode plate

    Alcl _ 3 + lialh _ 4體系符合絡合物電解中電流效率與電流密度的關系，使鋁鍍層在陰極上的分佈趨于均勻。
  4. Static - electric field of spindt cathode was analyzed and then field emission current was simulated. the method could direct the fabrication of spindt cathode. how the aspect ration and site density of cnts effect the field enhancement factor were also analyzed

    對碳納米管的頂端電場進行了計算，分析了其長徑比和生長密度對電場增強因子的影響，進而可以對場發射實驗進行指導。
  5. Simulation results show that cathode over - potential under low current density is considerably increased because of methanol crossover, but its effect becomes much lower under high current density

    模型顯示在低放電電流密度下，甲醇穿透顯著地增加了電池陰極過電位，降低了電池電壓；但在高電流密度下，甲醇穿透對電池性能的影響不顯著。
  6. The tffa model calculation has been carried out to investigate the effects of structural parameters of the afc cathode and pemfc cathode on the electrode performance, which is respectively represented by the curve of cathode overpotential versus current density and the curve of cathode potential versus current density

    本文運用tffa模型分別考察了afc陰極過電位?電流密度的曲線和pemfc陰極伏安曲線受陰極結構參數變化的影響程度。
  7. In contrast with conventional thermo - ionic cathode, field emitter array ( fea ) cathode has many special advantages, such as room - temperature operation without a cathode heater, high current density, low power dissipation, excellent on / off isolation characteristics and instant turn - on characteristics

    與傳統的熱陰極相比，場發射陣列陰極具有許多獨特的優點，如無需加熱，可以在室溫下工作;電流密度比熱陰極高幾個數量級，並可工作在低電壓調制下;功耗低;極好的開關特性;可瞬時啟動等。
  8. Abstract : in the paper a kind of new idea based on electric field theory is advanced, which is used in research of forming law of electrochmeical perforation with fixed cathode. according to it, the changing law of electric intensity, current density, velocity of perforation in ecm on the machined surface are presented

    文摘:根據電場理論，提出了一種研究固定陰極電化學射孔成形規律的新的處理方法，分析了該加工方式下陰極表面電荷密度及加工區的電場強度、電流密度、加工速度等在加工過程中的變化規律，為這種簡易加工方式的合理應用提供了嚴密的理論依據。
  9. Technological conditions of the cathode material lini1 - xcoxo2 using like sol impregnation method at air atmosphere have been investigated systematically. the structure and cycling performance of the sample linio. 7coo. 3o2 obtained at optimal conditions have been further studied too. the results indicates that the sample exhibits good electrochemical properties when cycled at low current density, and the material has little volume changes, showing good stru

    通過對不同充放電電流下材料的xrd圖譜的特徵及循環穩定性的分析，發現空氣中合成的lini _ （ 0 . 7 ） co _ （ 0 . 3 ） o _ 2材料以低電流密度充放電時具有良好的電化學穩定性，當材料以低電流密度在0 . 3 1 - y 1 . 0范圍內進行脫/嵌鋰反應，材料的體積變化較小，結構穩定。
  10. The cathodes both of the prepared tungsten - based barium - tungsten cathode and mixed metal barium - tungsten cathode have, not only high current density, but also a long life, simplified procedure and stable performance, and so on. and we made certain two good additives cr2o3 and ni2o3 that make the cathode performance more excellent

    2 ）對不同元素配比的二元和三元混合陰極基底的制備工藝和發射性能開展了實驗研究，在增大發射能力，延長壽命和降低燒結溫度等方面有重要進展，取得了有價值的階段成果。
  11. It shows that the charge - discharge performance of the battery, which is fabricated by casting the polymer electrolytes on the surface of the cathode directly then impregnating the composite electrode in liquid electrolytes for seconds, is much better than that of other batteries. the best battery ， s charge - discharge current density is as high as 0. 33 ma / cm2, and its specific energy accesses to 110ah / kg. moreover its capacity remains 80 % of initial capacity even after 20 cycles

    這種電池的充放電電流密度可達到0 . 33ma / cm2 ，比容量可達110ah / kg ，且在20次循環后，電池的容量仍能保持初始容量的80 % ，電池的充放電效率達到85 %以上，但是電池的本體電阻和電化學極化電阻比液態鋰離子電池高兩個數量級。
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