In this dissertation, refining grains, depositing conductibility carbon film on the surface of the particles and doping mg ~ ( 2 + ) into the lattice of lifepo4 were adopted to improve the electro - chemical performance of the cathode material. the cathode material lifepo4 mainly has two flaws, the low conductibility and the slow li + ion diffusion, which have a bad influence on the performance of the cathode material
論文主要針對制約正極材料lifepo _ 4性能的兩大致命的缺點,即低的電子導電率和低的
鋰離子擴散速率,採取材料顆粒的細
化、顆粒表面沉積碳導電層以及mg ~ ( ~ ( 2 + ) )離子摻雜等措施對其進行改性探索,以提高正極材料lifepo _ 4的電
化學性能。
In the work, it was systemically studied that the effects of two suggested modifying ways on electrochemical characteristics of lithium metal electrode and its behaviors in lithium cell. finally, the action mechanisms of these two modifying ways were analyzed. through the study on pretreatment effects of different cyclic ether on lithium electrode, it was found that 1, 4 - dioxane ( doa ) and 1, 3 - dioxolane ( dol ), both could form a favorable passivating sei film on lithium electrode surface through
研究不同環醚對
鋰電極的預處理作用發現, 1 , 4 -二氧六環( doa )和1 , 3 -二氧五環( dol )對金屬
鋰電極的表面預處理均可以在金屬
鋰表面形成一層良好的sei鈍
化膜,對
鋰金屬電極起到了保護性作用,使
鋰電極具有較小的界面阻抗,有效地提高了金屬
鋰電極的充放電循環效率,改善了
鋰金屬電極在循環過程中的表面形貌;而doa和dol對金屬
鋰電極的表面預處理,不會明顯的影響
鋰電極的動力學性能。
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。
Based on rich lepidolite resources in jiangxi province, with the self developed unique process, we produce lithium carbonate and lithium hydroxide effectively and environmental friendly, which are mainly as feed stock for our down stream products
利用江西
鋰雲母為原料,採用自主開發的低能耗殘渣可綜合利用無污染的獨特工藝生產工業碳酸
鋰和氫氧
化鋰,主要為我公司特種無機
鋰的生產供應基礎原料。
Study on modification of the guangfeng bentonite with li2co
廣豐膨潤土的
鋰化改性研究
( 3 ) despite of many studies on oxidationjlithiation of porous nickel, a very important factor abstract has not been pay much 8ttedion to, that is, most of the matcria [ s in mcfc actually work under a ioad generated by the self weight of mcfc stack, which undoubtedly has a great effect on the materials performance in mcfc
( 3 )盡管近些年來,對于金屬ni在熔鹽中的氧
化鋰化行為已進行了相當深入的研究,但是有一個很重要的因素卻未被關注。即, mcfc電池堆中的電極材料在實際啟動和運行過程中總是處于由電池堆自身產生的負荷狀態,負荷的存在無疑對電極材料的性能產生不容忽視的影響。
Lithium carbonate and lithium hydroxide monohydrate - determination of chloride content - mercurmetric method
碳酸
鋰單水氫氧
化鋰氯
化鋰化學分析方法汞量法測定氯
化物量
Lithium carbonate - determination of lithium carbonate content - acid - alkali titrimetric method
碳酸
鋰單水氫氧
化鋰氯
化鋰化學分析方法酸堿滴定法測定碳酸
鋰量
Lithium carbonate - determination of lithium hydroxide content - acid - alkali titrimetric method
碳酸
鋰單水氫氧
化鋰氯
化鋰化學分析方法酸堿滴定法測定氫氧
化鋰量
Lithium carbonate - determination of lithium chloride content - potentiometric method
碳酸
鋰單水氫氧
化鋰氯
化鋰化學分析方法電位滴定法測定氯
化鋰量
Lithium carbonate - determination of fluoride content - ion selective electrode method
碳酸
鋰單水氫氧
化鋰氯
化鋰化學分析方法離子選擇電極法測定氟量
Lithium carbonate - determination of arsenic content - molybdenum blue spectrophotometric method
碳酸
鋰單水氫氧
化鋰氯
化鋰化學分析方法鉬藍分光光度法測定砷量
Lithium carbonate - determination of sodium and potassium contents - flame atomic emission spectrometric method
碳酸鋰單水氫氧化鋰氯化鋰化學分析方法火焰原子發射光譜法測定鈉和鉀量