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Secondary cell, method for manufacturing secondary cell, positive electrode for secondary cells, method for manufacturing positive electrode for secondary cell, battery pack, electronic device, and electric vehicle

A secondary battery and manufacturing method technology, which is applied in battery electrodes, secondary batteries, electrode manufacturing, etc., can solve problems such as poor dispersion, low coating density, and poor coating properties, and achieve increased productivity, high performance, and manufacturing The effect of process simplification

Inactive Publication Date: 2014-09-17
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This slurry is poorly spreadable because crystalline sulfur is often poorly dispersed in the slurry
Coatings formed from this slurry are not uniform and this affects the yield of the coating
In addition, this coating contains many agglomerates that make the density of the coating very low (for example, about 0.3-0.4 g / cc) and affect the capacity of the battery per unit electrode volume

Method used

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  • Secondary cell, method for manufacturing secondary cell, positive electrode for secondary cells, method for manufacturing positive electrode for secondary cell, battery pack, electronic device, and electric vehicle
  • Secondary cell, method for manufacturing secondary cell, positive electrode for secondary cells, method for manufacturing positive electrode for secondary cell, battery pack, electronic device, and electric vehicle
  • Secondary cell, method for manufacturing secondary cell, positive electrode for secondary cells, method for manufacturing positive electrode for secondary cell, battery pack, electronic device, and electric vehicle

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0038] 1. Embodiment 1 (the positive pole that lithium-sulfur battery is used and the manufacture method of positive pole);

Embodiment approach 2

[0039] 2. Embodiment 2 (lithium-sulfur battery);

Embodiment approach 3

[0040] 3. Embodiment 3 (lithium-sulfur battery and manufacturing method of lithium-sulfur battery).

[0041] 1. Implementation Option 1

[0042] Positive electrode for lithium-sulfur batteries

[0043] Figure 1A is a cross-sectional view of a positive electrode for a lithium-sulfur battery according to Embodiment 1. Figure 1B is a plan view of the positive electrode for the same lithium-sulfur battery.

[0044] Such as Figure 1A and Figure 1B As shown, the positive electrode for this lithium-sulfur battery has a conductive substrate 11 and a layer containing insoluble sulfur (insoluble sulfur layer 12). The insoluble sulfur layer 12 generally contains any one of: insoluble sulfur and a conductive agent; or insoluble sulfur, a conductive agent and a binder. The content of insoluble sulfur is preferably 50% by weight or more, for example, 60% by weight or more; however, these parameters of composition and content of insoluble sulfur are not limited thereto. For example,...

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Abstract

The invention discloses a secondary cell, a method for manufacturing the secondary cell, a positive electrode for the secondary cell, a method for manufacturing the positive electrode for the secondary cells, a battery pack, an electronic device, and an electric vehicle with advantages as follows: a manufacturing process of the positive electrode containing sulphur is simplified and the productive rate is improved; capacity of the volume of the electrode at per unit is increased; extremely stable charging and discharaging characteristics are obtained; and the secondary cell has a positive electrode, a negative electrode, and an electrolyte, and the positive electrode contains insoluble sulfur.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Japanese Priority Patent Application JP2013-049208 filed on March 12, 2013, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a secondary battery, a method for manufacturing the secondary battery, a positive electrode for the secondary battery, a method for manufacturing the positive electrode for the secondary battery, a battery pack, an electronic device, and an electric vehicle. More particularly, the present disclosure relates to a secondary battery having a positive electrode containing sulfur and the positive electrode, a method of manufacturing the secondary battery and the positive electrode, and applications of the secondary battery. Background technique [0004] A lithium-sulfur battery is a secondary battery using sulfur as an active material of a positive electrode, and since this type of secon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M4/136H01M4/1397H01M10/052
CPCH01M4/0402H01M4/136H01M4/1397Y02E60/122H01M4/0404H01M10/052H01M10/0587Y02E60/10Y02P70/50H01M10/05H01M50/20H01M2220/20Y02T10/70
Inventor 齐藤阳介武志一正中陈雅贵
Owner MURATA MFG CO LTD
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