Anode material for lithium ion battery
A lithium-ion battery, cathode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of large irreversible capacity loss, no good solution, unstable structure, etc., and achieve excellent electrochemical performance and lattice parameters. The effect of small change and stable structure
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[0028] Example 1
[0029] This embodiment provides a positive electrode material for a lithium ion battery, which has a layered structure, and its expression is Li 1.02 Ni 0.6 Mn 0.35 Al 0.05 O 2 , Li 1.02 Ni 0.6 Mn 0.35 Al 0.05 O 2 The surface is also coated with Al 2 O 3 , Al 2 O 3 It accounts for 1 wt % of the total mass of the positive electrode material.
[0030] The preparation method of the positive electrode material comprises the following steps:
[0031] The first step, select nickel sulfate as nickel salt, manganese sulfate as manganese salt, fully dissolve nickel sulfate and manganese sulfate into deionized water and mix well, make nickel-manganese molar ratio be 60:35, add ammonium hydroxide to make nickel sulfate. Precipitate with manganese sulfate to obtain a precipitate, separate the precipitate, dry and calcine to obtain a manganese-nickel precursor salt.
[0032] In the second step, the nickel-manganese precursor salt is mixed with lithium hydrox...
Example Embodiment
[0035] Example 2
[0036] This embodiment provides a positive electrode material for a lithium ion battery, which has a layered structure, and its expression is Li 1.03 Ni 0.7 Mn 0.26 Mg 0.04 O 2 , Li 1.03 Ni 0.7 Mn 0.26 Mg 0.04 O 2 The surface of the cathode material is also coated with MgO, and MgO accounts for 2wt% of the total mass of the cathode material.
[0037] The preparation method of the positive electrode material comprises the following steps:
[0038] The first step, select nickel nitrate as nickel salt, manganese nitrate as manganese salt, fully dissolve nickel nitrate and nickel nitrate into deionized water and mix well, make nickel-manganese molar ratio be 70:26, add lithium hydroxide to make nickel nitrate. Precipitate with nickel nitrate to obtain a precipitate, separate the precipitate, dry and calcine to obtain a manganese-nickel precursor salt.
[0039] In the second step, the nickel-manganese precursor salt is mixed with lithium carbonate and ...
Example Embodiment
[0041] Example 3
[0042] This embodiment provides a positive electrode material for a lithium ion battery, which has a layered structure, and its expression is Li 1.05 Ni 0.55 Mn 0.45 O 2 , Li 1.05 Ni 0.55 Mn 0.45 O 2 The surface of the cathode material is also coated with LiF, and LiF accounts for 3 wt% of the total mass of the cathode material.
[0043] The preparation method of the positive electrode material comprises the following steps:
[0044] The first step, select nickel oxalate as nickel salt, manganese oxalate as manganese salt, fully dissolve nickel oxalate and nickel oxalate into ammonia water and mix well, make nickel-manganese molar ratio be 55:45, add lithium carbonate to make nickel oxalate and oxalic acid. Nickel is precipitated to obtain a precipitate, the precipitate is separated, dried and calcined to obtain a manganese-nickel precursor salt.
[0045] In the second step, the nickel-manganese precursor salt and lithium carbonate are mixed by ball...
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