Positive electrode for solid-state battery, manufacturing method of positive electrode for solid-state battery, and solid-state battery
A solid-state battery, positive current collector technology, applied in battery electrodes, non-aqueous electrolyte battery electrodes, batteries, etc., can solve problems such as worries and failure to eliminate short-circuit risks, and achieve the effect of suppressing short-circuit and cracking
Pending Publication Date: 2021-03-16
HONDA MOTOR CO LTD
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- Application Information
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Problems solved by technology
[0006] However, in the method described in Patent Document 2, the risk of short circuit caused by tab contact has not yet been eliminated.
In addition, the active material layer of solid batteries is relatively hard and brittle, so there is still concern about cracking due to binding under high pressure during lamination pressing
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[0045] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment shown below is an example of the present invention, and the present invention is not limited to the following embodiment.
[0046]
[0047] The positive electrode for a solid battery of the present invention includes a positive electrode current collector, and a positive electrode active material layer containing a positive electrode active material formed on the positive electrode current collector. The positive electrode for a solid battery of the present invention is characterized in that a positive electrode leader is disposed on at least two adjacent sides of the outer peripheral portion of the positive electrode active material layer on the surface having the positive electrode active material layer.
[0048] figure 1 A positive electrode for a solid battery according to an embodiment of the present invention is shown in . figure 1 It is ...
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The invention provides a positive electrode for a solid-state battery, a manufacturing method of the positive electrode for the solid-state battery, and the solid-state battery. The occurrence of cracking during lamination pressing at the time of manufacturing the solid-state battery and short-circuiting due to contact with a tab can be suppressed. A guide is provided on the outer periphery of a positive electrode active material layer, whereby pressure applied during the lamination pressing is dispersed, and short-circuiting due to contact with a tab is suppressed. Specifically, the guide isprovided on at least two adjoining sides of the outer periphery of the positive electrode active material layer of a surface having the positive electrode active material layer.
Description
technical field [0001] The invention relates to a positive electrode for a solid battery, a method for manufacturing the positive electrode for a solid battery, and a solid battery. Background technique [0002] Currently, lithium ion secondary batteries are widely used as secondary batteries with high energy density. A lithium ion secondary battery has a structure in which a separator is present between a positive electrode and a negative electrode and is filled with a liquid electrolyte (electrolyte). [0003] Since the electrolytic solution of a lithium ion secondary battery is usually a flammable organic solvent, especially thermal safety may become a problem. Therefore, a solid battery using an inorganic solid electrolyte instead of an organic liquid electrolyte has been proposed (see Patent Document 1). A solid battery based on a solid electrolyte can eliminate the problem of heat compared to a battery using an electrolyte solution, and can respond to demands for hig...
Claims
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IPC IPC(8): H01M4/13H01M50/531H01M50/586H01M4/139H01M4/70H01M10/0562H01M10/0585H01M50/534H01M50/536H01M50/59
CPCH01M4/139H01M4/70H01M10/0562H01M10/0585Y02E60/10H01M2300/0071H01M4/0402Y02P70/50H01M50/59H01M50/534H01M50/536H01M4/5815H01M2220/20H01M2220/30
Inventor 谷内拓哉大田正弘入野真
Owner HONDA MOTOR CO LTD