Batteries comprising alkali-transition metal phosphates and preferred electrolytes
一种电解质、电池的技术,应用在电池电极、二次电池、电路等方向,能够解决充电容量不足、失去再充电的能力、无法经济地生产等问题
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Embodiment 1
[0205] Molecular formula is Li 1.025 co 0.9 al 0.025 Mg 0.05 PO 4 The electrode active materials were fabricated as follows. Sources of Li, Co, Al, Mg and phosphate were provided which contained the respective constituents in a molar ratio of 1.025:0.9:0.025:0.05:1.
[0206] 0.05125 mol Li 2 CO 3 (mol.wt.73.88g / mol) 3.8g
[0207] 0.03 mol Co 3 o 4 (240.8g / mol) 7.2g
[0208] 0.0025 mol Al(OH) 3 (78g / mol) 0.195g
[0209] 0.005 mole Mg(OH) 2 (58g / mol) 0.29g
[0210] 0.1 mole (NH 4 ) 2 HPO 4 (132g / mol) 13.2g
[0211] 0.2 mole of elemental carbon (12g / mol) (>100% excess) 2.4g
[0212] The aforementioned starting materials were mixed and ball milled to mix the fine particles. Subsequently, the particulate mixture is granulated. The granular mixture was heated in a furnace at 750° C. for 4-20 hours in an argon atmosphere. The sample was removed from the furnace and allowed to cool. X-ray diffraction patterns show that the material has an olivine-type crystal str...
Embodiment 2
[0214] Molecular formula is Li 1.025 co 0.85 Fe 0.05 al 0.025 Mg 0.05 PO 4 (LiCo 0.85 Fe 0.05 al 0.025 Mg 0.05 Li 0.025 PO 4 ) electrode active material is produced as follows. The following sources of Li, Co, Fe, Al, Mg and phosphate were provided, which contained the corresponding components in a molar ratio of 1.025:0.85:0.05:0.025:0.05:1.
[0215] 0.05125 mol Li 2 CO 3 (mol.wt.73.88g / mol) 3.8g
[0216] 0.02833 mol Co 3 o 4 (240.8g / mol) 6.82g
[0217] 0.0025 mol Fe 2 o 3 (159.7g / mol) 0.4g
[0218] 0.0025 mol Al(OH) 3 (78g / mol) 0.195g
[0219] 0.005 mole Mg(OH) 2 (58g / mol) 0.29g
[0220] 0.1 mole (NH 4 ) 2 HPO 4 (132g / mol) 13.2g
[0221] 0.2 mole of elemental carbon (12g / mol) (>100% excess) 2.4g
[0222] The aforementioned starting materials were mixed and ball milled to mix the fine particles. Subsequently, the particulate mixture is granulated. The granular mixture was heated in a furnace at 750° C. for 4-20 hours in an argon atmosphere. The ...
Embodiment 3
[0224] Molecular formula Li 1.025 co 0.8 Fe 0.1 al 0.025 Mg 0.05 PO 4 (LiCo 0.8 Fe 0.1 al 0.025 Mg 0.05 Li 0.025 PO 4 ) electrode active material is produced as follows. The following sources of Li, Co, Fe, Al, Mg, and phosphate were provided, containing the corresponding components in a molar ratio of 1.025:0.85:0.1:0.025:0.05:1.
[0225] 0.05125 mol Li 2 CO 3 (mol.wt.73.88g / mol) 3.8g
[0226] 0.02667 mol Co 3 o 4(240.8g / mol) 6.42g
[0227] 0.005 mol Fe 2 o 3 (159.7g / mol) 0.8g
[0228] 0.0025 mol Al(OH) 3 (78g / mol) 0.195g
[0229] 0.005 mole Mg(OH) 2 (58g / mol) 0.29g
[0230] 0.1 mole (NH 4 ) 2 HPO 4 (132g / mol) 13.2g
[0231] 0.2 mole of elemental carbon (12g / mol) (>100% excess) 2.4g
[0232] The aforementioned starting materials were mixed and ball milled to mix the fine particles. Subsequently, the particulate mixture is granulated. The granular mixture was heated in a furnace at 750° C. for 4-20 hours in an argon atmosphere. The sample was rem...
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