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A kind of magnetic lithium metal battery copper magnetic composite electrode material and its preparation process and application

A lithium metal battery and preparation technology, applied in battery electrodes, secondary batteries, circuits, etc., to achieve the effects of promoting nucleation, reducing local current density, and enhancing mass transfer

Active Publication Date: 2020-10-23
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the prior art in lithium electroplating / stripping process, lithium dendrites will grow preferentially in some specific crystal directions due to uneven deposition

Method used

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  • A kind of magnetic lithium metal battery copper magnetic composite electrode material and its preparation process and application
  • A kind of magnetic lithium metal battery copper magnetic composite electrode material and its preparation process and application
  • A kind of magnetic lithium metal battery copper magnetic composite electrode material and its preparation process and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Mix polymethyl methacrylate microspheres and water at a mass ratio of 50:250, stir to form an emulsion for use; prepare the prepared emulsion, water and polyethylene glycol at a volume ratio of 20:400:2 Proportional mixing, ultrasonic dispersion or stirring to obtain the electrodeposition solution; use the bare copper substrate as the working electrode, platinum as the counter electrode, and use the above electrodeposition solution as a solution system for electrodeposition, control the electrodeposition voltage to 4V, and the current to 0.006A , the deposition time was 45s, and a bare copper substrate covered with a polymethyl methacrylate microsphere stencil was obtained. Mix water and diammonium hydrogen citrate at a mass ratio of 100:2, stir to form a uniform mixed solution, add soluble copper salt copper pyrophosphate and sodium pyrophosphate to the mixed solution and stir to prepare a copper-containing electrodeposition solution, wherein : The concentration of cop...

Embodiment 2

[0065] Mix starch microspheres, chitosan microspheres and water at a mass ratio of 50:250, stir to form an emulsion for later use; prepare the prepared emulsion, water and polyethylene glycol at a volume ratio of 10:300:1 The ratio of mixing, ultrasonic dispersion or stirring to obtain the electrodeposition solution; use the copper substrate as the working electrode, platinum as the counter electrode, and the above electrodeposition solution as a solution system for electrodeposition, control the electrodeposition voltage to 1.0V, and the current to be 0.001A, the deposition time is 10s, and the bare copper substrate covered with starch microspheres and chitosan microsphere templates is obtained. Mix water and potassium hydrogen phthalate at a mass ratio of 100:1, stir to form a uniform mixed solution, add soluble copper salt copper pyrophosphate and sodium pyrophosphate to the mixed solution and stir to prepare a copper-containing electrodeposition solution, Wherein: the copp...

Embodiment 3

[0067]Mix albumin microspheres, polystyrene microspheres and polyacrylic acid microspheres with water at a mass ratio of 100:350, stir to form an emulsion for later use; prepare the prepared emulsion, water and polyethylene glycol by volume Mix at a ratio of 30:700:3, ultrasonically disperse or stir to obtain an electrodeposition solution; use the bare copper substrate as a working electrode, use platinum as a counter electrode, and use the above electrodeposition solution as a solution system for electrodeposition to control the electrodeposition voltage The current is 7.0V, the current is 0.02A, and the deposition time is 90s to obtain a bare copper substrate covered with albumin microspheres, polystyrene microspheres and polyacrylic acid microsphere templates. Mix water and diammonium hydrogen citrate at a mass ratio of 100:5, stir to form a uniform mixed solution, add soluble copper salt copper pyrophosphate and sodium pyrophosphate to the mixed solution and stir to prepare...

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Abstract

The invention relates to a magnetic lithium metal battery copper magnetic composite electrode material and a preparation method and application thereof and belongs to the technical field of magnetic batteries. The preparation method comprises 1), removing oxides on the surface of a copper substrate and carrying out cleaning and drying, and 2), preparing a magnetic layer structure containing a magnetic metal on the surface of the copper substrate treated by the step 1), wherein the magnetic metal includes iron, cobalt, nickel and platinum and the magnetic layer structure includes a magnetic plating layer structure, non-magnetic micro-nano-structure doped magnetic particles, magnetic micro-nano-structure doped magnetic particles and a magnetic micro-nano-structure.

Description

technical field [0001] The invention is suitable for the technical field of lithium batteries, and in particular relates to a copper magnetic composite electrode material for a magnetic lithium metal battery and its preparation process and application. Background technique [0002] With the rapid development of electronic equipment and electric vehicles, it will be difficult for lithium-ion batteries to meet people's requirements for battery performance. The lithium metal negative electrode has ten times the theoretical capacity of the traditional graphite negative electrode, that is, the theoretical capacity of the graphite negative electrode is 372mAh / g, while the theoretical capacity of the metallic lithium negative electrode is as high as 3860mAh / g, and the most negative potential can reach -3.045V. Far beyond the performance of graphite anode, it will become an ideal next-generation battery. [0003] However, there are still many problems in the actual research of lith...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/525H01M10/0525
CPCH01M4/366H01M4/38H01M4/525H01M10/0525Y02E60/10
Inventor 唐谊平沈康王曾张铎
Owner ZHEJIANG UNIV OF TECH
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