Polypyrrole-modified lithium vanadium oxide nanotube of lithium-ion battery cathode material and preparation method of nanotube
A technology of lithium vanadium oxide nanometer and lithium ion battery, which is applied in battery electrodes, nanotechnology for materials and surface science, and electrolyte storage battery manufacturing, etc. It can solve the problems of low conductivity and unstable tubular structure, and improve the conductivity High efficiency, easy mass production, easy to control the effect
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Embodiment 1
[0035] A preparation method of polypyrrole-modified lithium vanadyl nanotubes as cathode material of lithium ion battery, comprising:
[0036] 1) Preparation of lithium vanadium oxide sol
[0037] The lithium vanadium oxide sol was prepared by sol-gel method, and 1gV 2 o 5 powder (analytically pure) and H 2 o 2 (30%, analytically pure) mixed at a molar ratio of 1:60, magnetically stirred in a water bath at 0-5°C for 2-3 hours, the reaction violently releases a large amount of heat and gas, and a reddish-brown transparent vanadium oxide sol is obtained. 0.15gLiOH·H 2 O (analytically pure) was added to the above sol, and magnetically stirred for 30-90 minutes to obtain lithium vanadium oxide sol.
[0038] 2) Preparation of lithium vanadium oxide nanotubes
[0039] Add 0.67g of hexadecylamine to the lithium vanadium oxide sol prepared in 1), and stir it magnetically for 16 hours to obtain a yellow mixture, then transfer the yellow mixture into a stainless steel reaction ket...
Embodiment 2
[0043] A preparation method of polypyrrole-modified lithium vanadyl nanotubes as cathode material of lithium ion battery, comprising:
[0044] 1) Preparation of lithium vanadium oxide sol
[0045] The lithium vanadium oxide sol was prepared by sol-gel method, and 1gV 2 o 5 powder (analytically pure) and H 2 o 2 (30%, analytically pure) mixed at a molar ratio of 1:100, magnetically stirred in a water bath at 0-5°C for 2-3 hours, the reaction violently releases a large amount of heat and gas, and a reddish-brown transparent vanadium oxide sol is obtained. 0.2gLiOH·H 2 O (analytically pure) was added to the above sol, and magnetically stirred for 30-90 minutes to obtain lithium vanadium oxide sol.
[0046] 2) Preparation of lithium vanadium oxide nanotubes
[0047] Add 1g of dodecylamine to the lithium vanadium oxide sol prepared in 1), and stir it magnetically for 10 hours to obtain a yellow mixture, then transfer the yellow mixture into a stainless steel reaction kettle w...
Embodiment 3
[0051] A preparation method of polypyrrole-modified lithium vanadyl nanotubes as cathode material of lithium ion battery, comprising:
[0052] 1) Preparation of lithium vanadium oxide sol
[0053] The lithium vanadium oxide sol was prepared by sol-gel method, and 1gV 2 o 5 powder (analytically pure) and H 2 o 2 (30%, analytically pure) mixed at a molar ratio of 1:200, magnetically stirred in a water bath at 0-5°C for 2-3 hours, the reaction violently releases a large amount of heat and gas, and a reddish-brown transparent vanadium oxide sol is obtained. 0.23gLiOH·H 2 O (analytically pure) was added to the above sol, and magnetically stirred for 30-90 minutes to obtain lithium vanadium oxide sol.
[0054] 2) Preparation of lithium vanadium oxide nanotubes
[0055] Add 1g of hexadecylamine to the lithium vanadium oxide sol prepared in 1), and stir it magnetically for 24 hours to obtain a yellow mixture, then transfer the yellow mixture into a stainless steel reaction kettl...
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