A method for directional construction of interface modification layer of manganese-containing materials
A technology of interface modification layer and solution, which is applied in the field of interface modification of non-ferrous metal functional materials, can solve the problems that the surface modification of manganese-containing materials cannot be guaranteed, and achieve the effect of complete modification and performance improvement
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Embodiment 1
[0023] This embodiment is based on Li-rich manganese-based material Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 A method for directional construction of a manganese-containing material interface modification layer for a modified object, comprising the following steps:
[0024] (1) Dissolve 30 g of n-butyl titanate into 150 ml of a hydrogen peroxide solution with a concentration of 20%, let stand for 120 min, and remove the upper layer of grease with a separating funnel to obtain a stable complex solution;
[0025] (2) Ammonia with a concentration of 12% was used as a precipitant; a 1 L reaction kettle was used as a mixer; first, 5g of lithium-rich manganese-based material and 300ml of ammonia with a concentration of 12% were added to the reaction kettle, and after stirring, the peristalsis was used. The pump feeds the complex solution into the reactor at a uniform speed, and carries out the surface modification reaction of the manganese-containing material to obtain a mixture of th...
Embodiment 2
[0030] This embodiment is based on spinel lithium manganate LiMn 2 O 4 A method for directional construction of a manganese-containing material interface modification layer for a modified object, comprising the following steps:
[0031] (1) Dissolve 1 g of zinc sulfate into 150 ml of a hydrogen peroxide solution with a concentration of 20% to obtain a stable complex solution;
[0032] (2) Mix ammonia water with a concentration of 12% and liquid caustic soda with a concentration of 20% according to a mass ratio of 1:1 as a precipitant; use a 1 L reactor as a mixer; first add 300ml of the prepared precipitant to the reactor , after turning on the stirring, use the feeder and the peristaltic pump to uniformly add the lithium manganate material and the complex solution into the reaction kettle;
[0033] (3) The material obtained after filtering and washing was calcined at 800 °C for 2 h under the condition of air to obtain a lithium manganate material whose interface was complet...
Embodiment 3
[0037] This example is based on the ternary material LiNi 0.5 Co 0.2 Mn 0.3 O 2 A method for directional construction of a manganese-containing material interface modification layer for a modified object, comprising the following steps:
[0038] (1) Dissolve 30 g of n-butyl titanate into 150 ml of a hydrogen peroxide solution with a concentration of 20%, let stand for 300 min, and remove the upper layer of grease with a separating funnel to obtain a stable complex solution;
[0039] (2) Ammonia with a concentration of 12% was used as a precipitant; a 1 L reaction kettle was used as a mixer; first, 5g of ternary material and 300ml of ammonia with a concentration of 12% were added to the reaction kettle, and after stirring, the peristaltic pump was used to The complex solution was added to the reaction kettle at a uniform speed, and the material obtained after filtering and washing was calcined at 600 °C for 6 h under the condition of air to obtain the interface coated with T...
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Abstract
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