電池之極化 的英文怎麼說
中文拼音 [diànchízhījíhuà]
電池之極化
英文
cell polarization- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 池 : 名詞1 (池塘) pool; pond 2 (旁邊高中間窪的地方) an enclosed space with raised sides 3 (舊指劇...
- 極 : i 名詞1 (頂點; 盡頭) the utmost point; extreme 2 (地球的南北兩端; 磁體的兩端; 電源或電器上電流...
- 電池 : [電學] cell; battery; element; electric battery
- 極化 : [物理學] polarization; overpotential; overtension; polarity極化器 polarizer; 極化強度 intensity o...
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Air electrode is one of the most important components in zinc - air cell. the main effect factors on performance of air electrode are catalysts ’ oxidation and deoxidization capability and structure of oxygen electrode
空氣電極是鋅-空氣電池的重要組成部分之一,影響空氣電極性能的主要因素是催化劑的氧化還原性能和空氣電極結構。Linio2 - based compounds were promising candidates of cathode materials for lithium ion batteries. but they still possessed various problems such as the difficulty of preparation, the poor heat stability and the dissatisfactory cycleability performance and so on, which insolubility for its practical applications, so it must be optimized synthesis and changed perfomance
鋰鎳氧系列電極材料是當前鋰離子電池新一代正極材料的研究熱點之一,但是由於該系列材料存在著諸如制備困難、熱穩定性差、循環性能差等問題而不能實際應用,必須對其進行合成優化和性能改性。A lot of experiments have been done in the process of exploiture soft packaging li - ion battery about how to choice the rational arts and crafts. the content include : how to deal with the collector, add how much pvdf in the material, how long the material need to stirring and the right viscidity, how much condubtivity agent the electrode need, what theckness is best, choice different collectors, the degree of dryness of the electrode, theckness of pressed model, how much electrolyte will be added, placement how long after added the electrolyte, system of formation how to influnce the battery, in formation the battery need or not need preesure from outside, how to vacuumize and the optimize matching positive pole and negative pole. with these practice make sure the parameter of the positive pole should less than 90 m ; according to different vacuumize order the conduc - tivity agent in anode will be 5mass % and 9mass %, respectively, and in cathode the data is 2mass % ; every 100mah added to 0. 4 ml electrolyte ; before formation the battery should be placement 8 hours and the system of formation must be less than 0. 01c before the voltage reach to 3. 0v ; should press in outside when battery in formation ; to these batteries which capacity more than 350mah the vacuum time not excess 15s ; the optimize matching positive pole and negative pole between 2. 10 : 1 and 2. 15 : 1. finally make out the battery which cycling performance and security are all very well
液態軟包裝鋰離子電池的研究主要是對關鍵工藝進行了優化設計,具體包括:集流體的處理、 pvdf的加入量、漿料攪拌時間和粘度、導電劑的加入量、電極膜的厚度、不同集流體的選擇、電極膜的乾燥程度、壓型的厚度、電解液的加入量、注入電解液后靜置時間的長短、化成制度的影響、化成時電池所具有的壓力影響、抽真空的處理、正負極活性物質的匹配。最後確定出液態軟包裝鋰離子電池最佳工藝參數:正極膜的厚度小於90 m ;根據化成時不同抽真空順序,確定正極膜中的導電劑的加入量分別為5mass %和9mass % ;負極膜中導電劑的加入量為2mass % ;電解液的加入量為每100mah添加0 . 4ml ;化成前電池的靜置時間應當大於8h ;電池在3 . 0v之前採用小於0 . 01c的化成制度;在化成過程中應當施加一定的外部壓力;對於350mah的電池抽真空的延時不應大於15s ;而正負極活性物質的質量比應當在2 . 1 : 1 2 . 15 : 1之間。Lithium metal is one of the electrode materials those have the highest specific mass energy, and the lithium secondary battery with lithium metal anode always attracts people ’ s attentions. whileas, before the commodity of lithium secondary battery, it is the dissatisfactory cycleability and safety of lithium metal anode that must be resolved firstly
金屬鋰是目前已知的質量比能量最高的電極材料之一,以金屬鋰作為負極材料的鋰二次電池長期受到人們的關注,但在其商品化之前,必須解決金屬鋰負極在循環性能和安全性能上的不足。When the air is fed to cathode of pemfc, the oxygen concentration decreases along the channel because of reaction, and the oxygen distribution is affected by land of the flow plate. so the oxygen distribution is uneven on cathode side and leads to dropping of cell performance
當pemfc陰極供給空氣時,因氧氣在催化層參與反應被消耗,其濃度沿流道逐漸降低,加之受流道間隔的影響,陰極側氧氣濃度不均勻,這導致電池性能惡化。We think increase of the internal resistance of battery is the main problem to the recycle life deteriorating at high rate, besides the influence of the materials. decomposition occurred on positive and negative electrode at high rate current and the interspaces increased. the restrains of swelling and the increase of an oxygen overvoltage can improve the performance of recycle life
對于電池性能衰減的原因,認為除了所使用的材料是影響電池性能的重要因素之外,在溫度和大電流作用下,電池的正負極材料發生裂解,極片內空隙增大,電池內阻性能惡化是引起電池高倍率循環性能惡化的關鍵;通過抑制正極析氧和膨脹,並降低負極合金材料的粉化過程,將有望緩解電池內阻特性的惡化,從而提高電池高倍率充放電循環性能。The research of the new and high conductivity material of lithium ionic conductor is always an interesting issue in the material field due to its low potential, light weight and providing high cell voltage and energy density
由於鋰具有較負的電極電勢和較輕的重量,可以為電化學器件提供高的電池電壓和能量密度,所以鋰離子導體高電導率新材料的研究一直是材料研究領域倍受關注的課題之一。The investigation and developing of lithium - ion batteries have attracted worldwide attention due to their excellent properties such as high cell voltage and specific capacity, and so on. remarking progress has been made on researching carbon anode materials
鋰離子電池以電壓高、比容量大等優點倍受世人關注,對鋰離子電池的碳負極材料的研究已取得較大的進展,但正極材料中因鋰鈷氧化物價高而使其應用受到限制,開發新型的正極材料已是當務之急。In the paper, li5mn4o83 + li5mn12o24 -, li5mn16o32 +, li17mn16o329 + clusters selected by " seed atoms " were calculated theoretically by means of the quantum chemical dv - xa calculation method. form the angle of electronic structure, the status of lithium ion and the electrochemical properties of lixmn2o4 were discussed preliminarily according to different conditions ( x = l, 2 ). based on calculation results, it ' s found that the jahn - teller distortion, which was thought to lead to poor cyclability, occurred during the discharge of lixmn204, and we also confirmed the formation of a novel phase with low energy after overdischarge ( x = 2 )
為了從微觀上認識錳系正極材料的結構和電化學性能之間的關系,本文提出了採用量子化學離散變分x (方法,對結合「種子原子法」選取的li5mn4o83 + 、 li5mn12o24 - 、 li5mn16o32 + 、 li17mn16o329 +等錳系正極材料的原子團簇進行了理論計算,從電子結構上初步探討了鋰離子嵌入正極材料后的存在形式以及鋰離子的嵌入對電極材料電化學性能的影響,同時還從結構上對鋰離子電池的循環性能和容量進行了初步的討論。Spinel limn2o4 is regarded as the most promising cathode material for lithium - ion cells because of its low cost and environmental friendly nature over licoo2. however its poor cyclabiliry greatly prevented it from wide application, especially at high temperature
Limn _ 2o _ 4尖晶石型化合物作為鋰離子電池的正極材料之一,被認為是最有希望替代licoo _ 2的綠色電源材料,但其較差的循環性能(特別是在高溫條件下)嚴重地阻礙了它的應用。This is able to happen because the space between the electrodes is filled with a material called an electrolyte which allows ions ( electrically charged atoms, or groups of atoms ) to pass from one electrode to the other and thus combine with their chemical complements
電池能起作用是由於在兩個電極之間的空間中充滿著一種叫做電解液的物質,它能允許離子(帶電原子或者其他原子團)能從一個電極轉移到另一個電極因此能使離子與它們的化學補充物相結合。Hence it is becoming one of the basic pemfc design jobs to improve the even distribution and the concentration of oxygen on cathode side
於是通過氣場設計提高電池陰極側催化層氧氣的濃度和分佈均勻性,成為pemfc基本的設計工作之一。Intermediate - low temperature solid oxide fuel cell ( iltsofc ) is the tendency of the solid oxide fuel cell ( sofc ) commercializing development, and one key problem is the study of cathode materials
摘要中低溫固體氧化物燃料電池的研製是固體氧化物燃料電池商業化的必然趨勢,陰極材料的研製是影響其發展的關鍵問題之一。So far it has been applied pre1iminarily to the power plants in commercial sca1e. however, the relatively short cell life, mainiy resulting from the dissolution of nio cathode and corrosion of materials in mcfc, limits severely its further commercialization
但因nio陰極形變造成電池系統結構的不穩定和nio陰極溶解造成電池短路而影響電池壽命的問題,卻始終成為限制其進一步大規模商品化的主要因素之一。Carbonaceous materials are currently used as anode materials in commercial lithium ion batteries. the need for smaller and lighter battery products promotes the search for new anode materials. tin and tin - based alloys are promising materials to replace carbonaceous materials in lithium ion batteries
便攜式電子設備的發展和信息化技術的需求對鋰離子電池提出了更高的要求,目前鋰離子電池商品化的負極材料主要是碳材料,其理論比容量較低,因而迫切需要研究新型鋰離子電池負極材料,其中錫與錫合金是很有希望取代碳負極材料的備選材料之一。分享友人