Cathode material LiMn2O4 for lithium ion battery was successfully prepared by low heating solid state coordination method. Mixed precursors were tested by TG-DTA to confirm the temperature of thermal decomposition. Th...Cathode material LiMn2O4 for lithium ion battery was successfully prepared by low heating solid state coordination method. Mixed precursors were tested by TG-DTA to confirm the temperature of thermal decomposition. The products from thermal decomposition, LiMn2O4 powders were characterized by XRD, TEM. The results showed that the samples were composed of nanorods assembled by small nanoparticles. The as-prepared LiMn2O4 was of high purity in a good crystal form with a spinel structure type. The powders had uniform chemical composition. The charge-discharge property of LiMn2O4 was also tested. The first charge and discharge capacities for LiMn2O4 were 125.4 mAh·g-1 and 115.3 mAh·g-1, respectively. The efficiency of charge-discharge could be up to 91.95%. In conclusion, LiMn2O4 with better electrochemical property could be obtained by low heating solid state coordination method.展开更多
Organicinorganic hybridbis(diethylammonium)tetrachlorocuprate was synthesized by solid state synthesis at lowheating temperature.Thermochromism and the probability on solid state reactiom of the hybrid were inve...Organicinorganic hybridbis(diethylammonium)tetrachlorocuprate was synthesized by solid state synthesis at lowheating temperature.Thermochromism and the probability on solid state reactiom of the hybrid were investigated by IR,DSC,XRD,and(in situ)UVvisible spectra.Solid state synthesis has much higher yield (908%) than solution method (491%) and almost need not any solvent during reaction process.展开更多
文摘Cathode material LiMn2O4 for lithium ion battery was successfully prepared by low heating solid state coordination method. Mixed precursors were tested by TG-DTA to confirm the temperature of thermal decomposition. The products from thermal decomposition, LiMn2O4 powders were characterized by XRD, TEM. The results showed that the samples were composed of nanorods assembled by small nanoparticles. The as-prepared LiMn2O4 was of high purity in a good crystal form with a spinel structure type. The powders had uniform chemical composition. The charge-discharge property of LiMn2O4 was also tested. The first charge and discharge capacities for LiMn2O4 were 125.4 mAh·g-1 and 115.3 mAh·g-1, respectively. The efficiency of charge-discharge could be up to 91.95%. In conclusion, LiMn2O4 with better electrochemical property could be obtained by low heating solid state coordination method.
文摘Organicinorganic hybridbis(diethylammonium)tetrachlorocuprate was synthesized by solid state synthesis at lowheating temperature.Thermochromism and the probability on solid state reactiom of the hybrid were investigated by IR,DSC,XRD,and(in situ)UVvisible spectra.Solid state synthesis has much higher yield (908%) than solution method (491%) and almost need not any solvent during reaction process.
