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1)  spinel LiMn_2O_4 ceramic
尖晶石型LiMn2O4陶瓷
2)  spinel LiMn2O4
尖晶石型LiMn2O4
1.
The effects of amounts of citric acid and concentrations of nitric acid on spinel LiMn2O4 prepared by liquid combustion synthesis using manganese acetate,lithium acetate as raw materials and citric acid as fuel were studied.
以醋酸锰和醋酸锂为原料,柠檬酸为燃料,研究了不同柠檬酸用量及不同硝酸浓度改性对液态燃烧合成法制备尖晶石型LiMn2O4的影响。
2.
The particle size of spinel LiMn2O4 obtained is only 10-100nm and uniform, and the experiments show that the electrochemical per- formance of the investigated material is comparable with the commercial LiMn2O4.
采用柠檬酸络合无焰燃烧法制备锂离子电池正极材料尖晶石型LiMn2O4,颗粒大小只有10-100nm,晶型完整,电化学性能与国内外商品化的同种材料相当。
3.
A new low temperature molten-combustion method was introduced to prepare spinel LiMn2O4.
采用一种新的低温熔盐燃烧法制备尖晶石型LiMn2O4物质。
3)  spinel LiMn_2O_4
尖晶石型LiMn2O4
1.
The main preparation processes of spinel LiMn_2O_4 are solid-phase synthesis, hydrothermal synthesis,coprecipition method and sol-gel method.
尖晶石型LiMn2O4作为锂离子电池的正极材料之一是近年来的研究热点。
4)  Spinel LiMn_2O_4
尖晶石LiMn2O4
1.
The compatibilities of six kinds of electrolytes with positive electrode active materials spinel LiMn_2O_4 and LiCoO_2 were studied.
研究锂离子电池正极活性材料尖晶石LiMn2O4和LiCoO2与6种电解液充、放电时的相容性。
2.
The surface of spinel LiMn_2O_4 was modified by electroless plating.
采用化学镀包覆方法对尖晶石LiMn2O4进行表面改性。
3.
The crystal structure of spinel LiMn_2O_4 was described in detail;the synthetic methods for the preparation of LiMn_2O_4 developed in recent years were reviewed,the advantages and drawbacks of each method were compared and analyzed.
在描述了尖晶石LiMn2O4的晶体结构基础上,综述了包括高温固相反应法、微波烧结法、固相配位反应法等固相合成法以及Pechini法、共沉淀法、溶胶-凝胶法等软化学合成法在内的尖晶石LiMn2O4的常用合成方法及其优缺点。
5)  Spinel LiMn 2O 4
尖晶石LiMn2O4
6)  spinel LiMn2O4
尖晶石LiMn2O4
1.
The compatibilities of electrolytes based on LiBF4 salt and positive electrode active materials spinel LiMn2O4 and LiCoO2 for Lithium ion batteries were studied.
对锂离子电池(LIB)正极材料尖晶石LiMn2O4和LiCoO2与LiBF4作溶质电解液的匹配性进行了研究。
2.
The spherical spinel LiMn2O4 powders were synthesized by sintering the MnO2 precursor mixed with LiOH·H2O by controlling the molar ratio of metal ions Li+: Mn2+ at 750℃ for 8h.
H2O为锂源,按照一定锂锰摩尔比混合,在750℃下焙烧8h,得到球形尖晶石LiMn2O4。
3.
Recently,many researchers have studied to modity LiMn2O4 by doping rare earths,and improved the electrochemical properties and structural stability of spinel LiMn2O4 effectively.
尖晶石LiMn2O4作为锂离子电池最有潜力的正极材料已经成为研究的热点,但其在充放电过程中结构的不稳定制约了其应用。
补充资料:尖晶石型陶瓷
分子式:
CAS号:

性质: 主晶相具有尖晶石结构RO·M2O3的多晶材料。通常RO是二价金属的氧化物,如氧化镁、氧化亚铁、氧化锌、一氧化锰等。M2O3是三价金属的氧化物,如氧化铝、氧化铁、氧化铬等。这两类不同价数的氧化物以等摩尔比结合成立方晶系RM2O4尖晶石化合物。少数也有以R4+、M2+或R6+,M+相结合尖晶石型化合物。用于电子工业中的尖晶石瓷通常指主晶相为镁铝尖晶石(MgO·Al2O3)的陶瓷,其理论组成的熔点与最低共熔点组成非常接近,故烧成范围很窄。通常须先人工合成尖晶石烧块为主要成分,再加入少量黏土及三氧化二硼、氟化钙、二氧化硅、氧化铬等添加物,降低烧结温度。密度2.7~3.6g/cm3。比热容836kJ/kg(25~100℃),100.3kJ/kg(400℃)、58.5kJ/ kg(1000℃)。相对介电常数约7.5,介质损耗角正切值为(5~8)×1.0-4,线膨胀系数(5.93~8.00)×10-6/℃。化学稳定性良好,与热稀酸或冷浓酸长时间接触不遭受任何腐蚀,氢氟酸对它也无显著影响。熔点2135℃,比氧化铝高。用它制成的坩埚可以熔融许多金属及合金而不损伤坩埚内壁,也不沾污熔融物本身。在电子工业中,它是低压高频电容器、感应线圈骨架及电子管插座等的良好材料。

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