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Rechargeable battery using proton embedded compound

A technology of embedding compounds and rechargeable batteries, which is applied in the direction of non-aqueous electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of low specific energy and specific power, limited applications, and poor rapid charge and discharge capabilities, and achieve light weight, Effects of improving safety and improving high-current charge-discharge capability

Active Publication Date: 2019-07-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ionic radii of sodium, magnesium, and aluminum are 0.102nm, 0.072nm, and 0.054nm, respectively, and the atomic weights are 23.0, 24.3, and 27.0, respectively, resulting in lower specific energy and specific power of the battery than lithium-ion batteries (0.076nm, 6.9) , poor fast charge and discharge capability
In addition, safety accidents caused by the formation of metal dendrites also limit the practical application of these embedded compound batteries.

Method used

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  • Rechargeable battery using proton embedded compound
  • Rechargeable battery using proton embedded compound
  • Rechargeable battery using proton embedded compound

Examples

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Embodiment 1

[0038] HCoO 2 (~5um, spherical) is the positive electrode material, graphite (~15um, spherical) is the negative electrode material, 1-ethyl-3-methyl-imidazole tetrafluoroborate is the electrolyte, and the polypropylene / polyethylene / polypropylene film is The diaphragm, the positive electrode current collector is metal aluminum foil, and the negative electrode current collector is metal copper foil. Positive electrode preparation: with HCoO 2 : Acetylene black: PVDF=8:1:1 (mass ratio, the same below), NMP is used as a dispersant, coated on metal aluminum foil, and a positive electrode sheet with a thickness of 50um is prepared. Negative electrode preparation: Graphite: acetylene black: PVDF = 8:1:1 (mass ratio, the same below), and NMP as a dispersant, coated on metal copper foil to prepare a negative electrode sheet with a thickness of 50um. In the glove box, the battery case is from bottom to top: negative electrode case, negative electrode sheet, electrolyte, separator, ele...

Embodiment 2

[0040] HFePO 4 (~20um, spherical) is the positive electrode, mesocarbon microspheres (~20um, spherical) are the negative electrode, polystyrene sulfonic acid is the electrolyte, polypropylene resin non-woven fabric is the separator, the positive electrode current collector is metal aluminum foil, and the negative electrode current collector For nickel foam. Positive electrode preparation: HFePO 4 : Acetylene black: PVDF = 8: 1: 1, NMP as a dispersant, coated on metal aluminum foil to prepare a positive electrode sheet with a thickness of 50um. Negative electrode preparation: mesophase carbon microspheres: acetylene black: PVDF = 8: 1: 1, NMP as a dispersant, coated on nickel foam to prepare a negative electrode sheet with a thickness of 50um. In the glove box, the battery case is from bottom to top: negative electrode case, negative electrode sheet, electrolyte, separator, electrolyte, positive electrode sheet and positive electrode case, packaged, and tested for electrochem...

Embodiment 3

[0042] Take HMn 2 o 4 (~600nm, octahedral shape) is the positive electrode, carbon nanotubes (diameter 40-60nm, length ~6um) are the negative electrode, perfluorosulfonic acid resin is the electrolyte and separator, the positive electrode current collector is metal aluminum foil, and the negative electrode current collector is carbon paper . Positive electrode preparation: with HMn 2 o 4 : Acetylene black: PVDF = 8: 1: 1, NMP as a dispersant, coated on metal aluminum foil to prepare a positive electrode sheet with a thickness of 50um. Negative electrode preparation: carbon nanotubes: acetylene black: PVDF=8:1:1, NMP as a dispersant, coated on carbon paper to prepare a negative electrode sheet with a thickness of 50um. In the glove box, the battery case is in order from bottom to top: negative electrode case, negative electrode sheet, electrolyte or separator, positive electrode sheet and positive electrode case, package, and test electrochemical performance. The battery p...

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Abstract

The invention provides a rechargeable battery with a proton embedded compound as an active material. When the battery is charged, protons are detached from the proton embedded compound cathode material and are embedded into the lattice of the embedded compound cathode material or adsorbed into the hydrogen storage material anode material by electrolyte. The discharging process is reversed. Electrons are transmitted through an external circuit to realize battery charging and discharging. The positive and negative electrodes are made of the proton-embedded compound or the hydrogen storage material. The electrolyte is ionic liquid or polymer solid electrolyte or solid acid with proton conductivity. The diaphragm is made of high-molecular polymer or polymer solid electrolyte or solid acid. Hydrogen protons are taken as active ions, and the hydrogen protons are light and can be quickly de-embedded and moved to improve the high-current charging and discharging ability of the battery. The battery system has a simple structure, low cost and high safety, and can realize industrial scale production.

Description

technical field [0001] The invention belongs to the field of rechargeable secondary batteries, in particular to a rechargeable battery using a proton intercalation compound. Background technique [0002] Among the existing secondary batteries, compared with nickel-cadmium batteries, nickel-metal hydride batteries, lead-acid batteries, etc., lithium-ion is the first secondary battery that uses intercalation compounds as electrode materials, which has high energy density and long cycle life. , no memory effect, low self-discharge rate and other advantages, it has been widely used in portable electronic equipment, backup power supply, uninterruptible power supply and other fields, and it is also the first choice for electric vehicles and energy storage batteries. However, lithium-ion batteries have the problems of poor high-current charging and discharging capabilities and poor safety. At the same time, lithium resources are limited, and large-scale use will face the problem of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/05H01M4/48H01M4/50H01M4/52H01M4/58H01M4/583H01M4/38H01M10/0562H01M10/0565H01M10/0566
CPCH01M10/05H01M4/483H01M4/502H01M4/523H01M4/5815H01M4/5825H01M4/583H01M4/383H01M4/385H01M4/58H01M10/0562H01M10/0565H01M10/0566Y02E60/10
Inventor 陈剑刘颖佳邵钦君
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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