Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a lithium complex metal oxide to give a nonaqueous electrolyte secondary battery capable of showing a high output in a high current rate. SOLUTION: In the manufacturing method of the lithium complex metal oxide of a layered structure, a lithium complex metal oxide raw material to contain transition metal element and lithium element so that a mol ratio of the lithium element against the transition metal element is within a range of one or more and 2 or less is calcined in the presence of one kind or more of an inert melting agent selected from a group of M carbonate, M sulfate, M nitrate, M phosphate, M hydroxide, M molybdate, and M tungstate (here, M expresses one kind or more of elements selected from a group of Na, K, Rb, Cs, Ca, Mg, Sr, and Ba). COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
A layer-structured oxide exhibiting a paraelectric characteristic and a layer-structured oxide having a preferable remanent polarization, and a process of producing the same. A layer-structured oxide containing Bi, a first component Me, a second component R, and O is produced by heating raw materials at a high temperature of about 1400° C. for several ten minutes by a self-flux method using Bi2O3 as a flux. The first component Me is composed of at least one kind selected from a group consisting of Sr, Pb, Ba, and Ca, and the second component R is composed of at least one kind selected from a group consisting of Nb and Ta. The composition formula of the oxide is expressed by Bi2-aMe1+bR2O9+c where a, b, and c are values in ranges of 0
Abstract:
本発明は、Na 3 V 2 (PO 4 ) 2 F 3 物質の製造方法であって、a)元素態炭素の非存在下、1種以上のリン酸陰イオン前駆体の存在下で、酸化バナジウムV 2 O 5 を還元性雰囲気下で還元してリン酸バナジウムVPO 4 を形成する工程と、b)工程a)で得られたVPO 4 と、有効量のフッ化ナトリウムNaF及び元素態炭素源としての1種以上の炭化水素系の含酸素化合物との混合物を、不活性雰囲気下で、該混合物を焼成するのに適した温度条件に暴露して、Na 3 V 2 (PO 4 ) 2 F 3 物質を形成する工程とを少なくとも含む方法に関する。本発明は、さらに、本発明に係る物質を用いた電極材料、電極並びにナトリウム二次電池に関する。 【選択図】なし