Accumulation-of-electricity element

Japanese Patent JP6094850

B2

An electric storage device, such as but not limited to a lithium ion secondary battery, including: an electrode assembly (1) having at least one protrusion portion (8A), said protrusion portion (8A) being formed of an end portion of any one of a positive electrode foil (7) and a negative electrode foil (8) and protruding in a laminated state from a side end of one or both of the electrode foils (7, 8); said protrusion portion (8A) is interposed between a current collector (3) and a metal material (13) wherein at least an end contact region (26A) of said metal material (13) is further away from the surface of the current collector (3) than a central region (25A) of the same material (13). Cracking or tearing of the protrusion portion (8A) of the electrode assembly (1) when welding the current collector (3) to the protrusion portion (8A) is thereby prevented.

WO/2019/044720	COMPOSITION FOR ELECTROCHEMICAL ELEMENT FUNCTIONAL LAYER, FUNCTIONAL LAYER FOR ELECTROCHEMICAL ELEMENT, AND ELECTROCHEMICAL ELEMENT
JP4924966	Lithium ion capacitor
JP2024016510	Electrode for power storage device, secondary battery, and manufacturing method of electrode for power storage device

Shinsuke Yoshitake
Satoshi Murakami
Tomonori Kishimoto

JP2012186744A

March 15, 2017

August 27, 2012

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Gs Yuasa Co., Ltd.

H01G11/70; H01M50/533; H01M50/534; H01M50/536; H01M50/538

JP2009032670A
JP2009087658A
JP2001038475A
JP2011092995A
JP2003346769A
JP2011165436A
JP2011100642A
JP2009277643A
JP2003346774A
JP2003197174A
JP2009032640A
JP2009519565A

Noboru Fujimoto

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