A method for preparing lithium nickel cobalt aluminum oxide material by low heat solid state reaction
A lithium-nickel-cobalt-aluminum, low-heat solid-phase technology, which is applied in the field of low-heat solid-phase reaction to prepare lithium-nickel-cobalt-aluminum oxide cathode materials, can solve the problems of high energy consumption, high reaction temperature, and difficult mixing uniformity, etc. Effects of energy consumption and production cost reduction
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Embodiment 1
[0027] (1) LiOH·H2O (12.445g), Ni(NO3)2·6H2O (69.790g), Co(NO3)2·6H2O (13.096g), Al(NO3)3·9H2O (5.627g) in molar ratio (1.06:0.8:0.15:0.05) Weighing and mixing in a high-speed mixer, the mixer rotates at 2000 rpm, and after mixing for 15 minutes, a green paste precursor is obtained. It was vacuum dried at 120°C for 12h.
[0028] (2) calcining the prepared precursor in an oxygen atmosphere or an air atmosphere at 700° C. for 8 hours to obtain a final product.
Embodiment 2
[0030] (1) LiOH·H2O(12.445g), Ni(NO3)2·6H2O(69.790g), Co(NO3)2·6H2O(13.096g), Al(NO3)3·9H2O(3.939g), MgCl2· 6H2O (0.919g) was weighed in a molar ratio (1.06:0.8:0.15:0.035:0.015), mixed in a high-speed mixer, the speed of the mixer was 2000 rpm, and after mixing for 15 minutes, a green paste precursor was obtained . It was vacuum dried at 120°C for 12h.
[0031] (2) calcining the prepared precursor in an oxygen atmosphere or an air atmosphere at 700° C. for 8 hours to obtain a final product.
Embodiment 3
[0033] (1) LiOH·H2O(12.445g), Ni(NO3)2·6H2O(69.790g), Co(NO3)2·6H2O(13.096g), Al(NO3)3·9H2O(3.939g), H3BO3( 0.278g) was weighed in a molar ratio (1.06:0.8:0.15:0.035:0.015), mixed in a high-speed mixer at a speed of 2000 rpm, and after mixing for 15 minutes, a green paste precursor was obtained. It was vacuum dried at 120°C for 12h.
[0034] (2) calcining the prepared precursor in an oxygen atmosphere or an air atmosphere at 700° C. for 8 hours to obtain a final product.
[0035] from figure 1 The XRD pattern of the medium precursor shows that when the precursor is prepared by high-speed mixing, most of the crystal water has been removed, and the hydroxyl group in LiOH is broken off and combined with Ni, Co, etc. to form metal hydroxide, while Li+ and NO3- Combine to form LiNO3.
[0036] from figure 2 , image 3 It can be seen that the nickel cobalt lithium aluminate sample obtained by the low temperature solid phase method has good crystallization, peak splitting, no i...
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