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Suita, Japan

This secondary battery negative electrode material constitutes an active material layer formed on a current collector layer of a secondary battery negative electrode and includes a Si particle and a coating material containing Ni and P, formed to cover a surface of the Si particle.


Patent
Neomax Materials Co. and Hitachi Ltd. | Date: 2013-07-01

This chassis (


Patent
Hitachi Ltd. and Neomax Materials Co. | Date: 2013-09-13

The present invention relates to a lithium ion battery employed by connecting the positive electrode side to a negative electrode portion made of Cu or a Cu alloy by a bus bar made of Al or an Al alloy and provides a negative electrode terminal for a lithium ion battery capable of providing sufficient bonding strength between the negative electrode portion and the bus bar when the negative electrode portion and the bus bar are metallurgically bonded to each other by resistance welding or the like, for example. This negative electrode terminal for a lithium ion battery is made of a clad material having a first metal layer made of Al or an Al alloy and a second metal layer made of Cu or a Cu alloy bonded to each other through a reaction-suppressing layer suppressing a reaction therebetween.


Patent
NEOMAX MATERIALS Co. | Date: 2016-01-08

An aluminum copper clad material has excellent bonding strength and includes an aluminum layer and a copper layer that are bonded without a nickel layer interposed therebetween. The aluminum layer and the copper layer are diffusion-bonded via an AlCu intermetallic compound layer. The copper layer satisfies Dcs0.5Dcc, where Dcc represents the average crystal grain size of crystal grains in a central portion in the thickness direction of the copper layer, and Dcs represents the average crystal grain size of an interface adjacent portion C


A negative electrode terminal for a battery in which a first metal layer and a second metal layer hardly separate from each other is provided by inhibiting an intermetallic compound from being formed between the first metal layer and the second metal layer. This negative electrode terminal (

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