本論文以化學共沉法製備不同比例的鋰鋁鐵、鋰鋁鉬、鋰鋁釩、鋰鋁鉬釩和鋰鋁鉬錳氧化物陶瓷粉末，此乃由於化學共沉法具有高均勻性、高反應性、高品質及精確的化學計量比。並對合成出來的粉末做一連串的性質分析及電、磁性質測試。
以化學共沉法製得之前導物粉末先由TGA判斷其在空氣下加熱，使粉末完全反應成氧化物的溫度(預期之煆燒溫度)。再用XRD分析前導物於不同溫度下煆燒6小時之粉末晶相種類及成長情況，FTIR圖譜觀察煆燒粉末之氫氧及多餘的有機物反應程度及陶瓷粉末，來決定最佳煆燒溫度條件。
煆燒後粉末以雷射粒徑分析儀測量粉體粒徑分佈情形，可知以化學共沉法製備之氧化物粉末平均粒徑約為0.41 ~ 0.63μm；以SEM觀察粉體外觀；以EDS分析粉體內各元素所佔之比例，符合配製粉體時的化學計量。
將煆燒後的氧化物粉末作為鋰離子二次電池之陰極材料，經過充放電測試比較後，可知五種氧化物中，鋰鋁鐵氧化物有著相對較高的電容量，但其工作電壓也相對較低，約為2.8~2.9V；鋰鋁鉬錳氧化物的工作電壓最高，約為4.0V。
煆燒後粉末再經由高於煆燒溫度300 ~ 500℃之溫度下燒結8小時。以LCR測量儀測量各燒結體之交流電阻及電容值經公式換算成介電常數，可知燒結溫度愈高電阻愈大、介電常數愈小；鋁含量愈多介電常數也愈小；並且含鉬的氧化物介電常數最大，約可到100，再來依序是釩、鐵，錳最小。不過整體來看LiAlXM1-XO2都屬於低介電材料。
利用SQUID測量在外加磁場的環境下，各燒結體之磁化強度隨溫度之變化情形判斷出鋰鋁鐵、鋰鋁鉬、鋰鋁釩、鋰鋁鉬釩和鋰鋁鉬錳氧化物燒結體，受外加磁場影響皆呈現正磁化率，隨溫度升高而產生消磁現象，屬於順磁性行為；並且當燒結溫度提高，產生之磁化率愈大。唯鋰鋁鉬錳氧化物在1300℃下燒結後，其燒結體顯示為反鐵磁性。

This study is to synthesize the powders of various stoichiometric ratios of lithium-aluminum-iron(molybdenum/ vanadium/ manganese) oxides by chemical coprecipitation. Because chemical coprecipitation has high homogeneity, high quality and exact stoichiometry. The characterization and electrical properties of the above compounds were investigated.
First, the precursors which were synthesized by chemical coprecipitation were analyzed with TGA. That the precursors were transferred to complex oxides compounds to know the probable temperature. Then XRD and FTIR were used to check the crystal type and undesired organic compoumds of precursors which calcined at various temperatures for 6 hours. Therefore, one could choose the best temperature for calcination.
The particle size distribution of the calcined products were measured at about 0.41 ~ 0.63 μm. SEM could be used to see the surface appearance of powders. EDS were used to know the stoichiometric ratios exactly.
The electrochemical experiments with the calcined products as a cathode of lithium batteriy were run. The results show that LiAl1/3Fe2/3O2 has relative higher electric capacity, but lower working potential at about 2.8V. LiAl1/3Mo1/3Mn1/3O2 has relative higher working potential at about 4.0V.
The calcined products were sintered at the temperature 300 to 500 degree of centrifuge higher than calcination temperature for 8 hours. LCR meter was used to measure the electrical capacitance of the samples. Dielectric constants were calculated from the electrical capacity through the formula. The dielectric constants of those materials are low, which decreases with increasing the sintering temperature, the measuring frequencies and the amounts of aluminum content.
From the SQUID experiment, one could obtain the magnetic property of all sinter bodies showing the paramagnetism. Only LiAlXMoYMn1-X-YO2 sintered at 1300℃ shows the antiferromagnetism.

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