Charge - discharge properties of mcmbs heat - treated with different time for the anode of lithium ion batteries 热处理时间对锂离子电池阳极用中间相炭微球充放电性能的影响
The results show that the property of starting materials and the preparation conditions have great influence on the characteristic of aqua - mesophase 结果表明原料和工艺条件对水性中间相的性能有较大影响。
The present problems and further research directions in the preparation high density and strength carbon / graphite materials from mesocarbon microbeads were put forth 并对中间相炭微球制备高密高强炭石墨材料中存在的问题和研究方向提出了自己的见解。
The result indicates that pt - ru / mcmb catalyst has higher catalytic activity than the catalyst with carbon black as support . all these results show that mcmb is a excellent catalyst support to be used in dmfc 结果表明，经koh溶液预处理的中间相碳微球用作载体时制备的pt / mcmb催化剂呈现出高催化活性。
In the systems of pnn - pt , the content of perovskite phase increased rapidly from 800 c to 850 c . the formation of perovskite phase for pnn - pt was more effective than that of pmn - pt system prepared by scm 。 ；最后再转化为钙钛矿结构的pfw 。在scm法中， pfw和州n干t的反应机理的区别是，前者形成的中间相为pbfewo 。
The supported catalysts with mesocarbon microbeads ( mcmb ) as support were prepared for the first time . the effect of the support pretreatment on the catalyst performance of methanol electrooxidation was examined in detail 在载体研制和机理研究方面的主要成果为： ( 1 )首次采用微米级中间相碳微球( mcmb )作为催化剂的载体，考察了载体预处理对催化剂活性的影响。
By using coal pitches and green petroleum coke as starting materials , the mixture of sulfuric acid and nitric acid as oxidizing agent , effects of the properties of starting materials and the processing conditions on the yield of were aqua - mesophase have been investigated 以煤沥青和石油生焦为原料，以浓硝酸和浓硫酸混合物为氧化剂，对炭质原料性能与水性中间相的产率之间的关系以及工艺条件对水性中间相产率的影响进行了研究。
The present studies have proved that the most important factor which influences the performances of lithium metal anode in battery is the solid electrolyte interphase interface - film ( sei film ) on lithium anode . and how to make lithium metal anode have a sei film with favorable composition and stable configuration , or make the sei film have better stability , is the key to improve the electrochemistry performances of lithium metal anode in lithium secondary battery 已有的研究证明:影响金属锂负极在电池中性能的主要因素是其表面的固体电解质中间相界面膜( sei膜)的性能;如何使锂金属电极表面具有组成良好、结构稳定的sei膜,或者使锂电极表面sei膜能够更好的“稳定化” ,是提高锂二次电池中锂金属负极电化学性能的关键。
The formation process of w - type ferrite underwent from oxide of metal , the m - type transition phase to final w - phase . when the heating rate was 5 / min , at 900 for 3 hrs and 1200 for 4 hrs , pure m - type and w - type ferrites were formed in air respectively . with heat treatment temperature increasing , crystal structure was more intact , the saturation magnetization increased and the coercive force decreased 热处理过程表明， m型铁氧体直接由金属氧化物反应形成，未经历尖晶石中间相； w型铁氧体形成由金属氧化物到m相过渡相最终向w相的转变；当升温速率为5 min ，温度在900 ，保温3小时和1200保温4小时，就分别形成单相m相和w相铁氧体；随着热处理温度的升高和保温时间的延长，衍射峰变尖锐，结晶更完整，空心微球的饱和磁化强度增大，矫顽力减小。
It was found that the interfacial bonding of 93w - ofc was both the joining action of ofc / w grains and that of ofc / ni - fe binders , whereas the joining of ofc to tc4 could be seen as the mutual intense diffusion effect between ofc / tc4 and as a result cu - ti intermetallic compounds were formed at the joint . the joining of tc4 - a1 and a1 - mb2 were also attributed to the result of diffusion between elements ti - al and al - mg respectively . on the other hand , residual thermal stress and stress - induced distortion were produced at the joint simultaneously due to the difference in thermal expansion coefficient of different welding " materials 研究表明， 93w与ofc的界面连接是ofc与93w中w晶粒的连接以及ofc与93w中ni - fe粘接剂的连接共同作用的结果； ofc与tc _ 4连接界面的形成是由于ofc与tc _ 4之间发生反应扩散，并由此在二者接头处生成了cu - ti金属间化合物的中间相； tc _ 4 - al的连接与al - mb _ 2的连接则分别是其基体元素ti 、 al之间和al 、 mg之间元素互扩散的结果，另外，由于热膨胀系数的差异，扩散焊接后在不同焊件的接头处存在残余热应力并由此引起接头的形变。
