TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The silicate compound is silicic-acid-phosphoric acid-aluminic acid compound of formula: A2-x-y+aMbSi1-x-yPxAlyO4-y+d11 (Ia) and the raw material composition is of formula: A2-x-y+aMbSi1-x-yPxAlyO4-y+d12 (Ib).a=-0.3-0.4;d11=number depending on a, b and valence of M;andd12=d11 after heating process.The compound containing element A chosen from carbonate, hydrogen carbonate, hydroxide, silicate, phosphate, hydrogen phosphate, aluminate, nitrate, chloride, sulfate, acetate or oxalate of element A, is used in the manufacturing process. The compound containing element M chosen from oxide, hydroxide, oxyhydroxide, silicate, phosphate, aluminate, chloride, nitrate, sulfate or organic salt of element M is used in the process. The compound containing silicon chosen from alkoxide or oxide of silicon, silicate, aluminosilicate or silicon is used in the manufacturing process. The compound containing phosphorus chosen from phosphorus oxide, ammonium phosphate, ammonium hydrogen phosphate, phosphoric acid, polyphosphoric acid, phosphorous acid, hypophosphorous acid, phosphate of element A, phosphate of element M or aluminum phosphate, is used in the manufacturing process. The compound containing aluminum chosen from aluminum oxide, oxyhydroxylated aluminum, aluminosilicate, aluminum chloride, aluminum nitrate, aluminum sulfate, aluminum phosphate, aluminate of element A or aluminate of element M, is used in the manufacturing process. Alternately, compound containing silicon chosen from silicon oxide, silicate of element A, silicate of element M, borosilicic acid salt, aluminosilicate, or alkoxide of silicon, compound containing phosphorus chosen from phosphorus oxide, ammonium phosphate, ammonium hydrogen phosphate, phosphate of element A, phosphate of element M, boron phosphate, aluminum phosphate, phosphoric acid, polyphosphoric acid, phosphorous acid, and hypophosphorous acid, compound containing B chosen from boron oxide, boric acid, borate of element A, borate of element M, borosilicic acid salt, boron phosphate and aluminum borate is used in the manufacturing process. The compound containing aluminum is chosen from aluminate of element (A), aluminum oxide, oxyhydroxylated aluminum, aluminate of M, aluminosilicate, aluminum phosphate, aluminum borate, aluminum chloride, aluminum nitrate or aluminum sulfate. The element (A) is lithium. The element (M) is iron or manganese. The silicic acid-phosphoric acid-aluminic acid compound is compound containing olivine type crystal grain of formula: Li2-x-y+a(FehMn1-h)bSi1-x-yPxAlyO4-y+d11 or Li2-x-y+a(FehMn1-h)bSi1-x-yPxAlyO4-y+d12.h=0-1.The solidified material contains carbon source chosen from organic compound and carbon powder. The ratio of the carbon equivalent amount in the carbon source is 0.1-20 %mass with respect to the total mass of the solidified material. Preferred Process: The cooling rate is -103 degrees C/second to -1010 degrees C/second. The heating is performed at 500-1000 degrees C.