JP2007250536A5

JP2007250536A5 -

Info

Publication number: JP2007250536A5
Application number: JP2007036074A
Authority: JP
Filing date: 2007-02-16
Publication date: 2010-03-11
Anticipated expiration: 2027-02-16

Claims

集電体と、前記集電体上に形成されたリチウムイオンを吸蔵および放出可能な電極活物質を含む電極活物質層と、を有する非水電解質二次電池用電極板であって、
前記電極活物質層は、前記集電体の中央部に形成された第１の活物質層と、前記集電体の長さ方向の端部に形成され、前記第１の活物質層よりも薄い第２の活物質層とからなり、
前記第２の活物質層の厚さは、前記第１の活物質層の厚さの０％以上、５０％以下であることを特徴とする非水電解質二次電池用電極板。 An electrode plate for a non-aqueous electrolyte secondary battery comprising: a current collector; and an electrode active material layer containing an electrode active material capable of inserting and extracting lithium ions formed on the current collector,
The electrode active material layer, a first active material layer formed at the center portion of the current collector is formed at the end of the length direction of the current collector, than the first active material layer Ri Do and a thin second active material layer,
The electrode plate for a nonaqueous electrolyte secondary battery , wherein the thickness of the second active material layer is 0% or more and 50% or less of the thickness of the first active material layer .

前記電極活物質層は気相法で作製された層であること、を特徴とする請求項１に記載の非水電解質二次電池用電極板。 The electrode plate for a nonaqueous electrolyte secondary battery according to claim 1, wherein the electrode active material layer is a layer produced by a vapor phase method.

リチウムイオンを吸蔵・放出可能な正極活物質を含む正極板と、請求項１または2に記載の非水電解質二次電池用電極板からなる負極板と、セパレータと、から構成される極板群と、
リチウムイオン伝導性を有する電解質と、を含む非水電解質二次電池であって、前記極板群は、前記正極板と前記非水電解質二次電池用電極板とを前記セパレータを介して長さ方向に捲回または折り畳んで構成されていること、を特徴とする非水電解質二次電池。 An electrode plate group comprising: a positive electrode plate containing a positive electrode active material capable of occluding and releasing lithium ions; a negative electrode plate comprising the electrode plate for a nonaqueous electrolyte secondary battery according to claim 1; and a separator. When,
A non-aqueous electrolyte secondary battery including a lithium ion conductive electrolyte, wherein the electrode plate group includes a length of the positive electrode plate and the electrode plate for the non-aqueous electrolyte secondary battery through the separator. A non-aqueous electrolyte secondary battery characterized by being wound or folded in a direction.