氧過電位 的英文怎麼說
中文拼音 [yǎngguòdiànwèi]
氧過電位
英文
oxygen overpotential-
In the first part of this paper, mn ( iii ) / mn ( ii ) couple in h2so4 was firstly applied as the positive couple to this system, i. e. redox flow cell. its chemical, electrochemical properties, redox kinetics and related parameters were characterized and discussed by rotating disc electrode ( rde ), cyclic voltammetry ( cv ), a. c. impedance ( a. c. imp ), chronoamperometry, tafel curve, and galvanostatic charge / discharge techniques. conclusions have been drawn as follows : 1. the electrochemical kinetics of mn ( iii ) / mn ( ii ) redox couple in 6. 3m h2so4 solution were studied by means of rotating disc electrode ( rde ) technique on platinum electrode
本文第一部分首次成功地將酸性介質中的mn （ iii ） / mn （ ii ）電對應用於氧化還原液流電池這一新型儲能裝置的正極活性材料，通過旋轉圓盤（ rde ） 、循環伏安（ cv ） 、交流阻抗（ a . c . imp ） 、恆電位階躍、 tafel實驗以及mn （ iii ） / mn （ ii ）單電極的恆流充放電實驗，我們得出以下結論： 1 .在旋轉圓盤電極上，不同轉速范圍，不同的極化過電位， mn （ ） / mn （ ）體系氧化還原電極過程的控制步驟不同，電荷傳遞、擴散傳質可分別或聯合成為控制步驟。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。Meanwhile, fundamental principles about electroless tin plating by reducing agent and disproportionation reaction were explained. function of every component in the bath was explained that complexing agent can effectively change the potential of copper and tin, and accelerate the beginning of replacement reaction favorably ; reducing agent can increase the rate of chemical reaction and has the effect of promoting reaction dynamics too ; antioxidant can effectively prevent sn2 + in the bath from being oxidated ; additive agent a can improve the stability of the bath ; additive agent b has such effects as refining and brightening for the tin deposits, and it enlarges the range of brightening section ; additive agent c used as leveling agent can not only make the depostis level off, but also improve the dispersive ability of the bath ; surface - active agent can solve bubble problem which gathered on the surface of the deposits, and improve the surface quality of the deposits and the bath stability
闡述了鍍液中各組分的作用：絡合劑能有效地改變銅、錫的電位，促使初期的置換反應順利進行；還原劑能加快化學反應速度，對反應動力學有積極的促進作用；抗氧化劑能有效地防止鍍液中sn ~ （ 2 + ）的氧化；添加劑a能提高鍍液的穩定性，添加劑b對鍍層能有細化和光亮作用，擴大了鍍層光亮區的范圍；添加劑c作為平滑劑，不僅能增強鍍層表面的平整性，而且能提高鍍液的分散能力；表面活性劑較好地解決了化學鍍過程中汽泡在鍍件表面聚集的問題，提高了鍍層的表面質量和鍍液的穩定性。4. a novel amperometric sensor has been constructed for the determination of h2o2. it was based on catalyzing electroreduction of hydrogen peroxide by metal hexacyanoferrate, which were electrodeposited on gold wire electrodes, under a certain potential
利用循環伏安法，在金電極表面電化學沉積一層鐵氰酸鎳膜（ nihcf ） ，在一定電位條件下，它能快速催化還原過氧化氫，其響應電流與過氧化氫的濃度呈線性關系。A quantitative appraisal of the prospect of uranium mineralization is completed based on a set of hydrochemical data acquired from the known in - situ leachable sandstone - type uranium, including radon content, acid - alkali ratio, oxidized and reduced electronic potential, hydrocarbonate radical and uranium content in water
但是在找鈾過程中僅用水化學成份、氡含量、酸堿度和氧化還原電位等數值進行描述，說明它們與鈾礦化的關系，這種單一因素的描述不能綜合反映與鈾礦化的聯系程度，以定量評價鈾礦化與上述因素的關系，從而影響了水化學找礦的效果。Effects of oxygen pressure on microstructure of lno conductive thin film has been studied by in situ reflection high energy diffraction ( rheed ) and ex situ x - ray photoelectron spectroscopy ( xps ). in the relatively low oxygen pressure, lno film displays spotty rheed pattern
首先，通過原位高能電子衍射（ rheed ）及x光電子能譜（ xps ）研究了氧分壓對lno導電薄膜微結構的影響，並進一步提出了氧分壓對lno薄膜微結構的影響的機理。In this paper, by explored geo - physico - chemical prospecting method for looking for oil in prior prospect, the authors summarize a suit of prospective technique and program, which is valid to oil - geology trait of zhidan area and composed of ; oil gas geo - chemical prospect ( acid degradation of hydrocarbon, absorbed - fluorescent spectrum, ultraviolet radiation spectrum, methane carbon - isotope ) non seismic detection in favorable explorative area which confirmed by chemical prospect ( matural potential, gamma energy spectrum. accurately magnetic analysis ) resistively prospecting in anomalous area which confirmed by physicalprospect successful general evaluation of geo - physicochemical prospect
通過勘探早期地質物化探綜合找油方法實驗，筆者總結了一套適合志丹探區石油地質特點的勘探方法組合和勘探程序：油氣地球化學勘探（酸解烴、吸附烴、熒光光譜、紫外光譜、甲烷碳同位素、蝕變碳酸巖）化探圈定的有利勘探區進行非地震物探（自然電位、伽瑪能譜、高精度磁測、土壤測氧）物探圈定的異常區進行電阻率測深勘探地質物化探成果綜合評價。Light microtechnique and sa - galactosidase method was used to study the effects of super - high - concentration of glucose on the senescence of human diploid fibroblast 2bs cells, ros and the membrane potential of mitochondria during this process were measured. our results showed that 200 mmol l of glucose inhibited the growth of 2bs cells, led to the changes of reactive oxygen species and decrease of mitochondrial membrane potential, and caused senescence of 2bs cells rapidly. it supports the hypothesis of oxidative damage of senescence. moreover it is a better system for the study of the effects of ros during the process of replicative senescence
利用光學顯微鏡觀察和酸性-半乳糖苷酶染色技術研究了高濃度葡萄糖對人二倍體成纖維細胞2bs細胞衰老進程的影響，並用流式細胞儀檢測了此過程中活性氧和線粒體膜電位差的變化。結果表明： 200 mmol l的葡萄糖對2bs細胞有生長抑制作用，能引起活性氧含量的變化，導致線粒體膜電位差顯著下降，並誘導了細胞的衰老。這為氧化損傷假說提供了新的證據，並為研究活性氧和復制衰老之間的關系提供了較好的體系。Its catalytic current was linear with the concentration of h2o2. most of interference was effectively eliminated and the inactivity of hrp under the too low potential to catalytize the reduction of h2o2 was avoided due to the enhanced potential of nr by zp in the composite film. while the silver colloid in the composite film enhanced the capability of zp to adsorb nr and prevented effectively nr from leaching off
4 、上修飾電極與辣根過氧化酶相耦合製成酶電極，顯著的催化了過氧化氫的還原，磷酸鋯提高了中性紅的氧化還原電位，大大的降低了測定的干擾，並有效的避免了辣根過氧化酶在過低的還原電位下失效，納米銀增強了膜對中性紅的吸附，有效的防止了其流失。Cu2 +. cr3 + were selected with different weight ratio doping in tio2 to study the photocatalyst modifying in this paper. the experiments of degradation methylene blue showed that the doping results were quantitatively correlated with the transition metal ion radii. their electronic configuration
對次甲基藍的降解實驗表明摻雜離子的修飾效果與過渡金屬離子的離子半徑、外圍電子構型、氧化還原電位和離子濃度等因素有關，質量比為0 . 5的fe ~ （ 3 + ）摻雜對次甲基藍的降解效率最高。Multi - component platinum alloys have been proved the best anode material for lowering the anode over - voltage and tolerating co poisoning
迄今為止，採用多組分鉑合金催化材料被認為是降低h _ 2或ch _ 3oh氧化過電位、提高催化劑抗co中毒的最有效手段。With the aid of the hydroquinone in the solution, the sensor displayed excellent electrocatalytical response to the reduction of h2o2 compared with enzyme - polymer modified sensor, the immobilization of enzyme was simple and the sensor exhibited a better stability and reproducibility
在工作電位- 100mv條件下，能快速催化還原過氧化氫。在傳感器製作中，酶固定方法簡單易行，制得的電極可多次重復使用，具有較好的使用價值。( 3 ) the free - standing porous silicon films with continuous porous structure were prepared on single crystal silicon wafer by the method of anodic oxidation and electrochemical etching - electropolishing, and firstly used as the anode materials for lithium ion secondary batteries. the capacities of lithium ions storage and the process of charge and discharge of this nano - silicon anode materials as well as the influence of the structure of ps on behavior of storing lithium ions were inspected at length. on the other hand, through the process of charge and discharge in cells, the lithium of light metal element could be electrochemically doped into ps at different doping levels
胡勁松河北師死大學碩士學位論文（ 3 ）利用陽極氧化法在單晶硅基底上制備了多孔硅自支撐膜，並首次將這種具有連續多孔結構的硅材料用作了理離子電池的陽極材料，考察了這種納米級硅陽極的儲鉀性能和充放電過程，分析了材料結構對其儲理行為的影響；另一方面，利用這種電池充放電過程在多孔硅中電化學引入了不同點綴程度的輕金屬鉀元素，考察了鉀點綴對多孔硅自身結構，及至性質所帶來的影響，提供了一種通過電化學方法插入埋離子從而連續調整多孔硅發光性質的有效方法。Abstract : this paper describes the methods to form silver clusters in solid, liquid and gas phases ; the properties of clusters such as absorption bands, esr, redox potential, ea and ip, and their catalytic behaviours in photo - splitting water and photographic development processes
文摘:本文綜述了在固相、液相和氣相中形成銀團簇的方法，銀團簇的主要性質如吸收光譜、 esr 、氧還電位、電子親和勢與電離能，以及銀團簇在光解水和照相顯影過程中的催化作用。Ir - ta - ti metal oxide coated titanium anodes of variable composition were prepared by thermal decomposition. their micro morphorogies and electrochemical properties were characterized by scanning electron microscope, open circuit potential, cyclic voltammetry, consumption rate measurements and accelerated life test. the sem results indicated that all coatings were of a porous and cracked - mud microstructure influenced greatly by the composition of coatings. the electrochemical measurements showed that the ir - ta - ti ternary oxide - coated anodes exhibited excellent electrochemical activity and electrochemical stability in both acidic media and seawater which were affected by the composition and microstructure of the coatings. owing to good corrosion resistance and low consumption rate in seawater, metal oxde coated anodes belong to insoluble material, and can be potentially applid in impressed current cathodic protection systems as an anode
採用熱分解方法在鈦基體上制備銥鉭鈦金屬氧化物陽極，用掃描電鏡對陽極塗層顯微形貌進行分析，通過強化電解壽命試驗、開路電位測試、消耗率試驗及循環伏安曲線研究了金屬氧化物陽極的電化學性能. sem分析結果表明銥鉭鈦金屬氧化物陽極塗層呈現多孔多裂紋形貌結構.隨陽極塗層組成不同，塗層顯微形貌表現出很大差異，這種差異直接影響陽極電化學性能.電化學性能試驗結果表明銥鉭鈦金屬氧化物陽極在酸性介質和海水中具有良好的電化學穩定性和電化學活性.此外，銥鉭鈦金屬氧化物陽極在海水中的消耗率很低，屬于不溶性的陽極材料，作為外加電流陰極保護用輔助陽極具有廣泛的應用前景The results show that thermoluminescent anomalies, whose two edges are higher and the middle is lower, indicate the uranium deposit, the rapidity step of natural voltage indicates the transitive section of oxidation - reduction
自然電位陡梯度變化帶反映了氧化還原過渡帶的位置。鈾、鉬、釩的地氣異常在礦體上方或礦體邊緣位置有不同程度的顯示。Using this system, we have studied matrine - inhibittory effect and trifluoperation - neuroprotection effect in hippocampal slices, also discussed the mechanism of long - term potentiation using anesthetic rats. the experiment results showed that matrine can inhibit the hyperactivity induced by penicillin sodium in dosage by changing the relative parameters of field potential ; trifluoperation can alter ps change with the time, enhance the degree and the ratio of ps recovery, then minis the hypoxic injury ; high frequency stimulate can increase ps amplitude and epsp slope for long time, buildup the in / out function of nerve cells, and enhance synaptic plasticity
結果表明，苦參堿能夠劑量依賴性地抑制青霉素誘導的神經元順向信號傳導激活過程，使細胞外記錄到的場電位各個參數發生相應改變；三氟拉嗪可以改變ps的時相變化，提高ps的恢復程度和恢復率，減小了神經元因缺氧引起的不可逆損傷；高頻刺激（ highfrequencystimulate ， hfs ）可以長時間的增強ps的幅度和epsp的斜率，進而增強神經元的輸入輸出功能，增加了突觸的可塑性。The magnitude of the conductivity maximum increases and shifts to lower temperature with increasing sr content. in this paper, the electrical conductivity reaches maximum value at x = 0. 4. below the temperature corresponding to the maximum value, the electrical conductivity is found to follow the relationship for the small polaron hopping mechanism, charge compensation of oxygen vacancy dominates electrical conduction at high temperature, and oxygen vacancy acts as traps to catch carriers, resulting in the decrease of carriers concentration and mobility
通過電學和熱學性能測試結果表明，電導率隨著sr含量的增加以及溫度的變化都出現了極大值，在本論文中，在sr含量為0 . 4時電導率值最大，電導率最大值對應的溫度隨著sr含量的增加而降低，這是由於在低溫下以小極化子導電機理為主，在高溫階段則是氧空位的電荷補償占據主導作用，氧空位使得載流子的濃度和可動性減弱，從而導致電導率降低。Standard test method for on - line monitoring of total carbon, inorganic carbon in water by ultraviolet, persulfate oxidation, and membrane conductivity detection
通過紫外線，過硫酸鹽氧化作用，膜導電位檢測對水中總碳，無機碳在線監測的標準試驗方法The electrochemical impedance spectroscopy of anodic reaction shows that the formation of black nickel was mainly controlled by electrochemical reaction at low anodic potential, and is mainly controlled by electrochemical reaction and diffusion at high anodic potental. with the increasing of anodic potential., the formation of black nickel is still controlled by electrochemical re
陽極反應的電化學阻抗譜表明，氧化電位較低時ni （ oh ） :氧化生成黑鎳的過程主要受電化學反應所控制，電位較高時，黑鎳形成過程主要受電化學反應及擴散混合控制，電位進一步增加，析氮反應占據主導優勢，陽極氧化過程仍主要受電化學反應及擴散混合控制。分享友人