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Non-aqueous electrolyte battery and preparation method thereof

A non-aqueous electrolyte and battery technology, applied in the direction of non-aqueous electrolyte batteries, electrolyte battery manufacturing, battery electrodes, etc., can solve the problems of poor compatibility of electrolytes, lithium-containing metal oxides paired into complete batteries, etc., to achieve good safety performance, High capacity, the effect of preventing internal short circuit

Active Publication Date: 2019-09-20
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Cu 2-x S has poor compatibility with electrolytes such as carbonates, and unmodified and unmodified Cu 2-x When S is used as an electrode active material, it is difficult to directly pair with lithium-containing metal oxides to form a full battery.

Method used

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  • Non-aqueous electrolyte battery and preparation method thereof
  • Non-aqueous electrolyte battery and preparation method thereof
  • Non-aqueous electrolyte battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The preparation method of the non-aqueous electrolyte battery of the present embodiment comprises the steps:

[0044] (1) Carbon coated Cu 2-x Preparation of S composite: 12.5g 0.005mol CuSO 4 ·5H 2 O, 12.5molNa 2 S 2 o 3 ·5H 2 O and 12g of glucose were added to 1L of deionized water, and magnetically stirred for 30min. The above mixed solution was spray-dried at 200°C with nitrogen as the carrier gas by a spray dryer to obtain a precursor, and then the precursor was transferred to an Ar atmosphere and calcined at 500°C for 12 hours, and the obtained product was washed with deionized water and absolute ethanol, vacuum Dry to get Cu 2-x S@C composites.

[0045] (2) Preparation of composite electrode: the prepared 5g Cu 2-x S@C composite material is dissolved with 1.071g acetylene black and 1.071g polyvinylidene fluoride (PVDF) by adding an appropriate amount of N-methylpyrrolidone (NMP), stirred and mixed evenly, and the slurry coating film is prepared on the co...

Embodiment 2

[0049] The preparation method of the non-aqueous electrolyte battery of the present embodiment comprises the steps:

[0050] (1) Carbon coated Cu 2-x Preparation of S composite: 12.5g 0.005mol CuSO 4 ·5H 2 O, 12.5molNa 2 S 2 o 3 ·5H 2 O and 12g of glucose were added to 1L of deionized water, and magnetically stirred for 30min. The above mixed solution was spray-dried at 200°C with nitrogen as the carrier gas by a spray dryer to obtain a precursor, and then the precursor was transferred to an Ar atmosphere and calcined at 500°C for 12 hours, and the obtained product was washed with deionized water and absolute ethanol, vacuum Dry to get Cu 2-x S@C composites.

[0051] (2) Preparation of composite electrode: the prepared 5g Cu 2-x S@C composite material is dissolved with 1.071g acetylene black and 1.071g polyvinylidene fluoride (PVDF) by adding an appropriate amount of N-methylpyrrolidone (NMP), stirred and mixed evenly, and the slurry coating film is prepared on the co...

Embodiment 3

[0054] The preparation method of the non-aqueous electrolyte battery of the present embodiment comprises the steps:

[0055] (1) Carbon coated Cu 2-x Preparation of S composite: 12.5g 0.005mol CuSO 4 ·5H 2 O, 12.5molNa 2 S 2 o 3 ·5H 2 O and 12g of glucose were added to 1L of deionized water, and magnetically stirred for 30min. The above mixed solution was spray-dried at 200°C with nitrogen as the carrier gas by a spray dryer to obtain a precursor, and then the precursor was transferred to an Ar atmosphere and calcined at 500°C for 12 hours, and the obtained product was washed with deionized water and absolute ethanol, vacuum Dry to get Cu 2-x S@C composites.

[0056] (2)Cu 2-x Preparation of S@C composite electrode: the prepared 5g Cu 2-x Dissolve S@C composite material with 1.071g acetylene black, 1.071g polyvinylidene fluoride (PVDF), add appropriate amount of N-methylpyrrolidone (NMP), stir and mix evenly, and make a slurry coating film on the copper foil current ...

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Abstract

The invention discloses a non-aqueous electrolyte battery and a preparation method thereof. The non-aqueous electrolyte battery comprises a composite material electrode, a lithium metal counter electrode, a diaphragm and non-aqueous electrolyte. The composite material electrode comprises a conductive current collector and a composite material layer arranged on the surface of the conductive current collector. The composite material layer comprises a carbon-coated Cu<2-x>S composite material, wherein 0<=x<=1.2, the particle size of the primary particles of Cu<2-x>S is 2-200nm, every primary particle of Cu<2-x>S is coated with carbon, and the thickness of the carbon coating is 2-100nm. The active material of the non-aqueous electrolyte battery has a wide range of sources, low cost and high specific capacity. The non-aqueous electrolyte secondary battery itself has the characteristic of high capacity, and can not only be used as a second battery for the driving power supply in a mobile information instrument such as a mobile phone, but also be widely used as a power supply for electric vehicles or hybrid electric vehicles.

Description

technical field [0001] The invention relates to a non-aqueous electrolyte battery and a preparation method thereof. Background technique [0002] Lithium-ion secondary batteries are high-efficiency, high-energy-density electrochemical energy storage devices that have been widely used in mobile electronic devices. Similar to other electrochemical energy storage systems, lithium-ion batteries are mainly composed of four key materials: positive electrode material, negative electrode material, separator and electrolyte. The intrinsic properties of materials have a very important relationship with the performance of lithium-ion batteries. At present, the cathode materials widely used in lithium-ion batteries are mainly transition metal oxides in which lithium ions can be intercalated and deintercalated reversibly, such as lithium cobaltate (LiCoO 2 ), ternary materials (LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 ) and other layered metal oxides represented by lithium manganate (LiMn 2 o ...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62H01M4/136H01M4/1397H01M10/0525H01M10/058
CPCH01M4/136H01M4/1397H01M4/366H01M4/5815H01M4/583H01M4/625H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 赵金保王昀晖张鹏
Owner XIAMEN UNIV