A kind of quinone compound negative electrode material for aqueous lithium ion battery and aqueous lithium ion battery
A technology for lithium-ion batteries and negative electrode materials, applied in battery electrodes, secondary batteries, electrochemical generators, etc., can solve problems such as difficulty in bulk electron transport, poor rate performance and cycle stability of organic materials, and achieve discharge specific capacity High, polymer designability, capacity-enhancing effect
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Embodiment 1
[0024]Using 1,5-diaminoanthraquinone as a monomer, oxidative polymerization to obtain poly-1,5-diaminoanthraquinone. Mix this anthraquinone polymer with acetylene black and polytetrafluoroethylene (PTFE) binder in water and ethanol at a mass ratio of 80:15:5 to make a slurry (because the subsequent water and ethanol need to be evaporated to dryness, so , adding an appropriate amount), rolling and forming, pressing onto the titanium mesh current collector with a pressure of 30Mpa, and drying at 393K in the air for 6 hours to make an electrode sheet. with 5M LiNO 3 +0.1M LiOH aqueous solution is the electrolyte, the electrode sheet is first placed in the electrolyte solution for 6 hours of vacuum immersion, and then the electrode sheet is used as the negative electrode, the porous polypropylene membrane is used as the separator, and the LiFePO 4 As the positive electrode, the electrolyte is injected into the water-based lithium-ion secondary battery. battery at 40mA g -1 Char...
Embodiment 2
[0026] With 1,5 dichloroanthraquinone as a monomer, with Na 2 S at 140 0 Reactive vulcanization polymerization under C to prepare anthraquinone-based vulcanized polymers. Mix this polymer with acetylene black and PTFE binder in water and ethanol according to the mass ratio of 55:40:5 to make a slurry, roll it into shape, and press it onto the foamed nickel collector with a pressure of 30Mpa. Dry at 393K for 6 hours to make an electrode sheet. Take 1MLi 2 SO 4 +0.2M LiOH aqueous solution is the electrolyte, the electrode sheet is first placed in the electrolyte solution for 6 hours of vacuum immersion, and then the electrode sheet is used as the negative electrode, the porous polypropylene film is used as the separator, and the LiCo 1 / 3 Ni 1 / 3 mn 1 / 3 o 2 The ternary material is the positive electrode, and the electrolyte is injected into the water-based lithium-ion battery. battery at 50mA g -1 Charge and discharge at constant current, the discharge voltage range is 0....
Embodiment 3
[0028] The 1,4,5,8-tetrahydroxy-9,10-anthraquinone monomer is dissolved in the organic solvent acetonitrile, and oxidatively polymerized to obtain a dimer product. Mix this polymer with graphite powder and PTFE binder in water and ethanol according to the mass ratio of 50:45:5 to make a slurry, roll it into shape, and press it onto the foamed nickel collector with a pressure of 30Mpa. Dry at 393K for 6 hours to make electrode sheets. Take 1M Li 2 SO 4 +0.2M LiOH aqueous solution is the electrolyte, the electrode sheet is first placed in the electrolyte solution for 6 hours of vacuum immersion, and then the electrode sheet is used as the negative electrode, the porous polypropylene film is used as the separator, and the LiCo 1 / 3 Ni 1 / 3 mn 1 / 3 o 2 The ternary material is the positive electrode, and the electrolyte is injected into the water-based lithium-ion battery. battery at 50mA g -1 Charge and discharge at constant current, the discharge voltage range is 0.5-1.5V. T...
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