Hitachi Metals, Ltd.

Neomax Materials Co., Ltd.

Proterial, Ltd.

Aoyama Seisakusho Ibaraki Plant Co., Ltd.

Yoshimitsu Oda

Masaaki Ishio

Ryoji Inoue

Masaharu Yamamoto

Tsuyoshi Hasegawa

Keita Watanabe

Kenji Ikeuchi

Akio Hashimoto

Kenichi Funamoto

Yasuto Nozawa

Masayuki Yokota

Toshiaki Fujita

Wataru Kushima

Hirofumi Nakano

Naonori Ishii

A high-temperature bimetal capable of being inhibited from considerably shifting from an original position when the temperature has fallen to an ordinary temperature is provided. This high-temperature bimetal () includes a high thermal expansion layer () made of austenitic stainless steel and a low thermal expansion layer () made of a thermosensitive magnetic metal having a Curie point and bonded to the high thermal expansion layer. The high-temperature bimetal is employed over both a high temperature range of not less than the Curie point and a low temperature range of less than the Curie point, while an upper limit of operating temperatures in the high temperature range of not less than the Curie point is at least 500° C.

High-temperature bimetal

A high-temperature bimetal capable of being inhibited from considerably shifting from an original position when the temperature has fallen to an ordinary temperature is provided. This high-temperature bimetal (1) includes a high thermal expansion layer (2) made of austenitic stainless steel and a low thermal expansion layer (3) made of a thermosensitive magnetic metal having a Curie point and bonded to the high thermal expansion layer. The high-temperature bimetal is employed over both a high temperature range of not less than the Curie point and a low temperature range of less than the Curie point, while an upper limit of operating temperatures in the high temperature range of not less than the Curie point is at least 500° C.

Thermosensitive deformation apparatus

A clad material for a battery current collector includes a pinhole due to falling off of an intermetallic compound containing Al and Ni or an intermetallic compound containing Al and Fe from an outer surface of a first layer. A clad material for a battery current collector includes a clad material obtained by bonding a first layer made of Al or an Al alloy and a second layer made of any one of Ni, a Ni alloy, Fe, and a Fe alloy by rolling. The clad material has a thickness of 50 &#x3bc;m or less. In the clad material, an intermetallic compound layer constituted by an intermetallic compound containing Al and Ni or an intermetallic compound containing Al and Fe, the intermetallic compound layer having a thickness of 0.1 &#x3bc;m or more and 1 &#x3bc;m or less, is formed between the first layer and the second layer.

Clad material for battery current collector and method for manufacturing clad material for battery current collector

This foil for a secondary battery negative electrode collector (negative electrode-collecting foil) includes a first Cu layer () made of Cu or a Cu-based alloy, a stainless steel layer (), and a second Cu layer () made of Cu or a Cu-based alloy, which are disposed in this order, a total thickness is 200 &#x3bc;m or less, and 0.01% proof stress is 500 MPa or more.

Foil for secondary battery negative electrode collector

A clad material () for a negative electrode collector of a secondary battery includes a Ni alloy layer () made of a Ni alloy that contains 0.005 mass % or more and 0.50 mass % or less of C, Ni, and inevitable impurities, and a pair of Cu layers () respectively bonded to opposite surfaces of the Ni alloy layer and that contain 99 mass % or more of Cu.

Clad material for negative electrode collector of secondary battery and method for manufacturing the same

A method for manufacturing a clad material () includes performing a Ni plating treatment on a Cu material () made of Cu or a Cu-based alloy to make a Ni-plated Cu material in which the Cu material is covered with a Ni plating layer, performing a heat treatment on the Ni-plated Cu material at a holding temperature of 650&#xb0; C. or higher and 850&#xb0; C. or lower, and bonding an Al material () made of Al or an Al-based alloy and the Ni-plated Cu material on which the heat treatment has been performed to each other by rolling to make the clad material.

Method for manufacturing clad material

A foil () for a negative electrode collector of a secondary battery includes a Cu-coated foil () including an iron-based alloy layer () made of precipitation hardened stainless steel, and a pair of Cu layers () respectively disposed on opposite surfaces of the iron-based alloy layer and made of Cu or a Cu-based alloy. The negative electrode collector foil has a thickness of 20 &#x3bc;m or less and a volume resistivity of 7 &#x3bc;&#x3a9;&#xb7;cm or less.

Negative electrode current collector foil including iron based alloy layer sandwiched between copper layers and method for manufacturing the same

A lead material () for a negative electrode is made of a clad material () including a Cu layer () made of Cu or a Cu alloy and Ni layers () each made of Ni or a Ni alloy. The Ni layers are respectively bonded to opposite surfaces of the Cu layer. The Ni layers each include a surface () not bonded to the Cu layer, the surface including an oxide film () with a thickness of 30 nm or less.

Lead material for negative electrode and method for manufacturing lead material for negative electrode

A lead material for a battery includes a metal plate made of single metal, in which the hardness of a central portion is lower than the hardness of a surface layer portion.

Method for manufacturing lead material for battery

This cladding material for a battery collector consists of a cladding material having a two-layer structure formed by bonding a first layer arranged on a first surface and constituted of an Al-based alloy and a second layer arranged on a second surface and constituted of a Cu-based alloy to each other by rolling. The ratio of the thickness of the first layer to the total thickness of the first layer and the second layer is not more than 35%.

Cladding material for battery collector and electrode

This clad material for a battery negative electrode lead material is constituted of a clad material of a three-layer structure including a first layer constituted of pure Ni, a second layer constituted of pure Cu and a third layer constituted of pure Ni. The thickness of a first diffusion layer formed between the first layer and the second layer and the thickness of a second diffusion layer formed between the second layer and the third layer are at least 0.5 &#x3bc;m and not more than 3.5 &#x3bc;m.

Clad material for battery negative electrode lead material, method of manufacturing clad material for battery negative electrode lead material and battery

Lead material for battery

A battery terminal includes a shaft portion and a flange portion. The battery terminal is made of a clad material in which at least a first metal layer and a second metal layer are bonded to each other. Each of the shaft portion and the flange portion includes the first metal layer on a first side in a shaft direction and the second metal layer on a second side in the shaft direction. The first metal layer in the shaft portion includes a protruding portion that further protrudes to the second side in the shaft direction with respect to a surface of the first metal layer on the second side in the shaft direction in the flange portion.

Battery terminal, method for manufacturing battery terminal, and battery

A battery terminal is made of a clad material in which a first metal layer made of an Al-based alloy, a second metal layer made of a Cu-based alloy, and a third metal layer made of a Ni-based alloy are bonded to each other in a state where the first metal layer, the second metal layer, and the third metal layer are stacked in this order. The battery terminal includes a shaft portion and a flange portion that radially expands from the shaft portion, and has the third metal layer at least in an end of the shaft portion on a first side in a shaft direction in which the shaft portion extends.

Growing community of inventors

Suita, Japan

Yoshimitsu Oda