Method for directionally constructing manganese-containing material interface modification layer
An interface modification layer and interface modification technology, which is applied to structural parts, electrode manufacturing, electrical components, etc., 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 the lithium-rich manganese-based material Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 The method of oriented construction of a manganese-containing material interface modification layer for the modified object includes the following steps:
[0024] (1) Dissolve 30g of n-butyl titanate in 150ml of 20% hydrogen peroxide solution, let it stand for 120 minutes, and remove the upper layer of grease with a separatory funnel to obtain a stable complex solution;
[0025] (2) Use 12% ammonia as the precipitant; 1 L reactor as a mixer; first add 5g of lithium-rich manganese-based materials and 300ml of 12% ammonia into the reactor, turn on the stirring, use peristalsis The pump adds the complex solution to the reaction kettle at a uniform speed to carry out the surface modification reaction of the manganese-containing material to obtain a mixture of the interface-modified manganese-containing material and the reaction solution;
[0026] (3) Carry out solid-liquid sepa...
Embodiment 2
[0030] This embodiment is based on spinel lithium manganate LiMn 2 O 4 The method of oriented construction of a manganese-containing material interface modification layer for the modified object includes the following steps:
[0031] (1) Dissolve 1g of zinc sulfate into 150ml of 20% hydrogen peroxide solution to obtain a stable complex solution;
[0032] (2) Ammonia water with a concentration of 12% and liquid caustic soda with a concentration of 20% are mixed in a mass ratio of 1:1 as the precipitant; 1 L reactor is used as a mixer; first, 300ml of the prepared precipitant is added to the reactor After turning on the stirring, use a feeder and a peristaltic pump to add the lithium manganate material and the complex solution into the reactor at a uniform speed;
[0033] (3) The material obtained after filtration and washing is calcined at 800°C for 2 hours under air conditions to obtain a lithium manganate material whose interface is completely modified by ZnO.
[0034] In this embodi...
Embodiment 3
[0037] This embodiment is based on the ternary material LiNi 0.5 Co 0.2 Mn 0.3 O 2 The method of oriented construction of a manganese-containing material interface modification layer for the modified object includes the following steps:
[0038] (1) Dissolve 30g of n-butyl titanate into 150ml of 20% hydrogen peroxide solution, let it stand for 300 minutes, and remove the upper layer of grease with a separatory funnel to obtain a stable complex solution;
[0039] (2) Use 12% ammonia water as a precipitant; use a 1 L reactor as a mixer; first add 5g of ternary materials and 300ml ammonia water with a concentration of 12% to the reactor. After turning on the stirring, use a peristaltic pump to The complex solution was added to the reaction kettle at a uniform rate, and the material obtained after filtration and washing was calcined at 600°C for 6 hours under air conditions to obtain the interface with TiO 2 Completely modified ternary materials.
[0040] The interface obtained in this e...
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Abstract
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