JPH0922701A - Positive electrode member for non-aqueous secondary battery - Google Patents
Positive electrode member for non-aqueous secondary batteryInfo
- Publication number
- JPH0922701A JPH0922701A JP7192614A JP19261495A JPH0922701A JP H0922701 A JPH0922701 A JP H0922701A JP 7192614 A JP7192614 A JP 7192614A JP 19261495 A JP19261495 A JP 19261495A JP H0922701 A JPH0922701 A JP H0922701A
- Authority
- JP
- Japan
- Prior art keywords
- less
- secondary battery
- positive electrode
- aqueous secondary
- stainless steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、非水二次電池用部材に
関し、とくに耐食性や加工性に優れるオーステナイト系
ステンレス鋼を用いた、正極材として好適に用いられる
部材を提案する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for a non-aqueous secondary battery, and particularly proposes a member which is suitable for use as a positive electrode material and which uses austenitic stainless steel which is excellent in corrosion resistance and workability.
【０００２】[0002]
【従来の技術】非水二次電池は、高エネルギー密度を有
しかつ小型・軽量であることから、小型電子機器等の電
源として使用されている。この電池は通常、４Ｖ以上の
高い電池電圧を有しかつ腐食性の高い非水電解液を用い
るので、電池用部材、特に正極用部材については耐食性
に優れたものが必要とされてきた。従来、このような電
池部材として； 特開平１−２７９５７８号公報では、正極材として
Al箔を用い、 特開昭６２−１８６４６７号公報では、Cr：17〜20
wt％、Mo：1.8 〜2.5 wt％、Ti＋Ta：0.1 〜1.0 wt％を
含有するフェライト系ステンレス鋼を用い、 特開平４−６７３０１号公報では、ＳＵＳ−３２９
Ｊ１やＳＵＳ−３２９Ｊ２を用い、 また、特開平４−１２１９６２号公報では、Cr：23
〜30wt％、Mo：0.5 〜4.5 wt％を含有する２相ステンレ
ス鋼を用いること、などが提案されている。2. Description of the Related Art Non-aqueous secondary batteries are used as a power source for small electronic devices and the like because they have a high energy density and are small and lightweight. Since this battery usually uses a non-aqueous electrolyte having a high battery voltage of 4 V or higher and a high corrosive property, a member having excellent corrosion resistance has been required for a battery member, particularly a positive electrode member. Conventionally, as such a battery member; in JP-A-1-279578, as a positive electrode material
An Al foil is used, and in JP-A-62-186467, Cr: 17-20
A ferritic stainless steel containing wt%, Mo: 1.8 to 2.5 wt%, and Ti + Ta: 0.1 to 1.0 wt% is used, and in Japanese Patent Laid-Open No. 4-67301, SUS-329.
J1 or SUS-329J2 is used, and in JP-A-4-121962, Cr: 23
It is proposed to use a duplex stainless steel containing -30 wt% and Mo: 0.5-4.5 wt%.
【０００３】ところが、従来の非水二次電池の正極材の
場合、 通常、4.2 Ｖ程度の電圧を印加して充電するが、こ
の充電時および高電圧での保存時に、食孔状の腐食を受
ける、 冷間ヘッダー加工により製造するとき、素材の加工
性が悪いと作業工程が増え、製造コストが上がる、 加工後、端子を溶接するが、素材の溶接性が悪いと
特殊な端子を取付けなければならず、製造コストが上が
る、などの理由のために、改善が強く求められていた。However, in the case of the positive electrode material of the conventional non-aqueous secondary battery, normally, a voltage of about 4.2 V is applied to charge the battery, but pitting corrosion occurs during this charging and storage at a high voltage. When manufacturing by cold header processing, if the workability of the material is poor, the work process increases and the manufacturing cost increases.After processing, the terminals are welded, but if the material's weldability is poor, special terminals must be attached. There was a strong demand for improvement for reasons such as increased manufacturing costs.
【０００４】このような要求を満たすものとして開発さ
れた各従来技術、例えばAl箔の場合、素材表面に厚い酸
化皮膜を形成しやすいために、溶接性が劣るという欠点
があった。また、フェライト系あるいは２相ステンレス
鋼の場合、冷間ヘッダー加工性が悪く、しかも耐食性の
面でも４Ｖ以上の充電電圧を受けると腐食が発生するこ
とがあり、二次電池用正極用素材として十分なものとは
言えなかった。Each of the conventional techniques developed to meet such requirements, for example, Al foil, has a drawback that the weldability is poor because a thick oxide film is easily formed on the surface of the material. Further, in the case of ferritic or duplex stainless steel, the cold header workability is poor, and in terms of corrosion resistance, corrosion may occur when receiving a charging voltage of 4 V or more, which is sufficient as a positive electrode material for secondary batteries. I couldn't say that.
【０００５】これに対し、最近、Cr：11〜26wt％、Ni：
8 〜18wt％、Mo：１〜７wt％を主として含有するオース
テナイト系ステンレス鋼が、耐食性と加工性の良い二次
電池用素材として開発された。しかしながら、この素材
は、オーステナイト系ステンレス鋼であることから、確
かに冷間ヘッダー加工性や溶接性は改善されたものの、
二次電池用部材として十分に満足のいく耐食性を有する
ものではなかった。すなわち、発明者らの充電を想定し
た耐食性評価試験によると、この材料は、前述のフェラ
イト系および２相系のステンレス鋼と同様、食孔状の腐
食が発生する傾向があり、耐食性の点ではなお一層の改
善が必要であった。On the other hand, recently, Cr: 11 to 26 wt%, Ni:
Austenitic stainless steel mainly containing 8 to 18 wt% and Mo: 1 to 7 wt% has been developed as a material for secondary batteries having good corrosion resistance and workability. However, since this material is an austenitic stainless steel, although cold header workability and weldability have certainly improved,
As a secondary battery member, it does not have sufficiently satisfactory corrosion resistance. That is, according to the corrosion resistance evaluation test assuming charging by the inventors, this material has a tendency to cause pitting corrosion like the above-mentioned ferritic and duplex stainless steels, and in terms of corrosion resistance. Further improvement was needed.
【０００６】[0006]
【発明が解決しようとする課題】そこで本発明は、従来
技術が抱えている上述した問題点のない非水二次電池を
提案することを目的とし、とくに 4.3Ｖという過充電を
受けるような場合でも十分な耐食性を有し、かつ加工性
の良好な電池用部材を提供することを解決課題とする。Therefore, the present invention aims to propose a non-aqueous secondary battery which does not have the above-mentioned problems that the prior art has, and particularly in the case where it is overcharged to 4.3V. However, it is a problem to be solved to provide a battery member having sufficient corrosion resistance and good workability.
【０００７】[0007]
【課題を解決するための手段】こうした課題を解決する
ために鋭意研究した結果、発明者らは、非水二次電池用
部材として、高Cr−Ni−Mo系のオーステナイト系ステン
レス鋼におけるNi含有量を20wt％以上に増加させ、かつ
Ｎ含有量を好適範囲に調整することにより、素材の加工
性を犠牲にすることなく耐食性を向上させたものが得ら
れることを見出した。[Means for Solving the Problems] As a result of intensive research to solve these problems, the inventors have found that as a member for a non-aqueous secondary battery, the Ni content in a high Cr-Ni-Mo austenitic stainless steel is high. It has been found that by increasing the amount to 20 wt% or more and adjusting the N content to a suitable range, it is possible to obtain a material having improved corrosion resistance without sacrificing the workability of the material.
【０００８】すなわち、本発明は、必須成分として少な
くともCr, Moを含有するオーステナイト系ステンレス鋼
からなる、単電池あたり4.３Ｖを上限として充電される
非水二次電池用の部材であって、この部材が20〜30wt％
のNiと0.05〜0.40wt％のＮを含有するオーステナイト系
ステンレス鋼であることを特徴とする非水二次電池用部
材である。なお、本発明は、上記オーステナイト系ステ
ンレス鋼が、Ｃ：0.08wt％以下、Si：1.5 wt％以下、M
n：2.00wt％以下、Ｐ：0.05wt％以下、Ｓ：0.03wt％以
下、Cr：16〜30wt％、Ni：20〜30wt％、Mo：２〜８wt
％、Ｎ：0.05〜0.40wt％、残部がFeおよび不可避的不純
物からなるもの、または、上記オーステナイト系ステン
レス鋼が、Ｃ：0.08wt％以下、Si：1.5 wt％以下、Mn：
2.00wt％以下、Ｐ：0.05wt％以下、Ｓ：0.03wt％以下、
Cr：22〜30wt％、Ni：23〜30wt％、Mo：５〜８wt％、
Ｎ：0.15〜0.25wt％、残部がFeおよび不可避的不純物か
らなるものであることが好ましい。That is, the present invention relates to a member for a non-aqueous secondary battery, which is made of austenitic stainless steel containing at least Cr and Mo as essential components and is charged up to 4.3 V per unit cell, This member is 20-30wt%
Is austenitic stainless steel containing Ni and 0.05 to 0.40 wt% N, and is a non-aqueous secondary battery member. In the present invention, the above austenitic stainless steel is C: 0.08 wt% or less, Si: 1.5 wt% or less, M
n: 2.00 wt% or less, P: 0.05 wt% or less, S: 0.03 wt% or less, Cr: 16 to 30 wt%, Ni: 20 to 30 wt%, Mo: 2 to 8 wt%
%, N: 0.05 to 0.40 wt%, the balance being Fe and unavoidable impurities, or the above austenitic stainless steel, C: 0.08 wt% or less, Si: 1.5 wt% or less, Mn:
2.00 wt% or less, P: 0.05 wt% or less, S: 0.03 wt% or less,
Cr: 22-30 wt%, Ni: 23-30 wt%, Mo: 5-8 wt%,
It is preferable that N: 0.15 to 0.25 wt%, with the balance being Fe and inevitable impurities.
【０００９】[0009]
【作用】本発明は、非水二次電池用部材として、上記の
成分組成にかかるオーステナイト系ステンレス鋼を用い
ることを特徴とする。以下にその成分組成を限定する理
由について説明する。 Ｃ, Si, Mn：これらの元素は、含有量が増加すると材料
の強度が高くなり、冷間加工性が低下するので、これら
はそれぞれ、Ｃ：0.08wt％以下、Si：1.5 wt％以下、M
n：2.0 wt％以下とする。The present invention is characterized by using the austenitic stainless steel having the above-mentioned composition as a member for a non-aqueous secondary battery. The reason for limiting the component composition will be described below. C, Si, Mn: As the content of these elements increases, the strength of the material increases and the cold workability decreases, so these are C: 0.08 wt% or less, Si: 1.5 wt% or less, respectively. M
n: 2.0 wt% or less.
【００１０】Ｐ, Ｓ：これらの元素は、含有量が増加す
るとリン化物あるいは硫化物が多量に析出し溶接性を劣
化させるので、これらはそれぞれ、Ｐ：0.05wt％以下、
Ｓ：0.03wt％以下とする。P, S: When the contents of these elements are increased, a large amount of phosphides or sulfides are precipitated and the weldability is deteriorated.
S: 0.03 wt% or less.
【００１１】Cr：16〜30wt％ Crは、ステンレス鋼としての基本的な特性、すなわち,
耐食性を付与する不動態皮膜を強固にするために添加さ
れるものであって、少なくとも11wt％以上の添加が必要
である。しかし、該電池のように４Ｖ以上の電池電圧を
有し腐食性の大きい非水電解液と接してもなお十分な耐
食性を示すものであるためには、このCrの含有量は16wt
％以上にすることが必要である。好ましくは20wt％以
上、より好ましい下限の含有量は22wt％以上である。一
方、このCrの含有量の上限は30wt％とする。それは、こ
の量を超えると材料の強度が高くなり冷間加工性が著し
く低下するようになり、部材の成形が困難になる。従っ
て、Crは、16〜30wt％の範囲、好ましくは20〜30wt％、
最も好ましい範囲として22〜30wt％が推奨される。Cr: 16-30 wt% Cr is a basic characteristic of stainless steel, that is,
It is added in order to strengthen the passive film that imparts corrosion resistance, and it is necessary to add at least 11 wt% or more. However, in order to show sufficient corrosion resistance even when the battery has a battery voltage of 4 V or more and is highly corrosive, the Cr content is 16 wt%.
% Or more is required. The content is preferably 20 wt% or more, and more preferably the lower limit content is 22 wt% or more. On the other hand, the upper limit of the Cr content is 30 wt%. When it exceeds this amount, the strength of the material becomes high, and the cold workability is remarkably deteriorated, which makes it difficult to form the member. Therefore, Cr is in the range of 16-30 wt%, preferably 20-30 wt%,
22-30 wt% is recommended as the most preferred range.
【００１２】Ni：20〜30wt％ Niは、本発明において最も重要な役割を担うオーステナ
イト相の形成成分である。即ち、このNiは、オーステナ
イト組織を形成して素材の加工性を向上させるための必
須の元素である。この点、このNiについては従来、非水
電解質電池の正極用素材において耐食性を維持するため
に抑制すべき成分であると考えられてきた。しかしなが
ら、発明者らは、オーステナイト組織を有するステンレ
ス鋼では、むしろこのNiは、耐食性を向上させる元素で
あり、特に20wt％を超えるNiを含有させることで、 4.3
Ｖの充電を受けても食孔状の腐食が生じにくいことを実
験検討により究明した。このような知見に基づき本発明
では、Niの含有量を、従来よりもはるかに多い量, 即
ち、20wt％以上、好ましくは23wt％以上含有させること
にした。しかしながら、このNiを30wt％以上添加しても
耐食性に対する効果が飽和し、しかも高価な元素である
ため経済性を損なうので、Ni含有量の上限は30wt％とし
た。Ni: 20 to 30 wt% Ni is an austenite phase forming component which plays the most important role in the present invention. That is, this Ni is an essential element for forming an austenite structure and improving the workability of the material. In this respect, it has been conventionally considered that Ni is a component to be suppressed in order to maintain the corrosion resistance in the material for the positive electrode of the non-aqueous electrolyte battery. However, the present inventors have found that in stainless steel having an austenitic structure, this Ni is an element that improves the corrosion resistance, and in particular, by containing more than 20 wt% Ni, 4.3
It was clarified by experimentation that pitting corrosion is unlikely to occur even when charged with V. Based on such knowledge, in the present invention, the content of Ni is decided to be much higher than the conventional amount, that is, 20 wt% or more, preferably 23 wt% or more. However, even if Ni is added in an amount of 30 wt% or more, the effect on corrosion resistance is saturated, and since it is an expensive element, the economic efficiency is impaired. Therefore, the upper limit of Ni content was set to 30 wt%.
【００１３】Mo：２〜８wt％ Moは、電池の正極用素材として耐食性を確保するために
必要な元素であり、少なくとも２wt％の添加は必要であ
り、好ましくは3 wt％以上、より好ましくは５wt％以上
の添加が必要である。しかしながら、このMoは８wt％を
超えると耐食性に有利なσ相の析出が促進され、また製
造性も著しく劣化することから、Mo含有量の上限は８wt
％とした。Mo: 2 to 8 wt% Mo is an element necessary for ensuring the corrosion resistance as a material for the positive electrode of the battery, and it is necessary to add at least 2 wt%, preferably 3 wt% or more, more preferably It is necessary to add 5 wt% or more. However, when Mo exceeds 8 wt%, precipitation of σ phase, which is advantageous for corrosion resistance, is promoted, and manufacturability is significantly deteriorated. Therefore, the upper limit of Mo content is 8 wt%.
%.
【００１４】Ｎ：0.05〜0.40wt％ Ｎは、本発明において、Niと同様に重要な役割を担う必
須の成分である。即ち、その役割とは、該電池用正極材
として必要とされる耐食性を向上させる作用である。こ
うした作用を期待するためのＮ含有量は0.05wt％未満の
添加では効果がなく、一方、0.40wt％以上添加してもそ
の効果が飽和するとともに材料の強度が著しく高くなり
加工性が劣化する。従って、このＮの含有量は0.05〜0.
40wt％の範囲とした。なお、好ましいＮの含有量は0.10
〜0.30wt％の範囲内、より好ましくは0.15〜0.25wt％の
範囲内である。N: 0.05 to 0.40 wt% N is an essential component which plays an important role in the present invention like Ni. That is, the role is to improve the corrosion resistance required as the positive electrode material for the battery. Addition of less than 0.05 wt% N content to expect such an effect has no effect, while addition of 0.40 wt% or more saturates the effect and significantly increases the strength of the material and deteriorates workability. . Therefore, the N content is 0.05-0.
The range was 40 wt%. The preferable N content is 0.10.
To 0.30 wt%, more preferably 0.15 to 0.25 wt%.
【００１５】なお、上記成分組成の他に、本発明の作用
・効果を損なわないことを条件として、耐食性, 加工性
の向上などを目的として、Cu, Ｗ, Coなどの元素を添加
してもよい。In addition to the above component compositions, elements such as Cu, W and Co may be added for the purpose of improving corrosion resistance and workability, provided that the action and effect of the present invention are not impaired. Good.
【００１６】[0016]
【実施例】本発明を実施例に基づいて説明する。 実施例１ 表１に示す成分組成の鋼（発明例と比較例）について、
非水電解液中での耐食性、および冷間ヘッダー加工性を
左右する重要な因子である、材料の常温でのビッカース
硬さと伸びの評価試験を行った。なお、耐食性の評価
は、該電池の充電を模擬するため、表面を研磨した供試
材と金属Liを、プロピレンカーボネートとジエチルカー
ボネートの１：１混合溶媒に電解質 LiPF6を１mol/l 溶
解した非水電解液中に浸漬し、金属Liに対し 4.3Ｖの電
位差を試験片に与えて24時間放置し、表面の腐食状況を
観察する方法で行った。その結果を表１と図１〜図３に
示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on embodiments. Example 1 For steels having the composition of components shown in Table 1 (invention examples and comparative examples),
The Vickers hardness and elongation of the material at room temperature, which are important factors that affect the corrosion resistance in the non-aqueous electrolyte and the cold header workability, were evaluated. In order to evaluate the corrosion resistance, in order to simulate the charging of the battery, the test material whose surface was polished and metallic Li were dissolved in a 1: 1 mixed solvent of propylene carbonate and diethyl carbonate, and electrolyte LiPF 6 was dissolved at 1 mol / l. The test piece was immersed in an aqueous electrolytic solution, a potential difference of 4.3 V with respect to metallic Li was applied to the test piece, and the test piece was allowed to stand for 24 hours to observe the surface corrosion state. The results are shown in Table 1 and FIGS.
【００１７】表１に示すように、本発明例では、いずれ
も非水電解液中でも食孔状の腐食はほとんど認められ
ず、また、冷間ヘッダー加工性の目安であるビッカース
硬さは200以下、伸び40％以上を満足しており、優れた
耐食性と加工性を兼備していることがわかった。これに
対し、Ni, Mo, Ｎが本発明の条件に満たないNo.7, 9, 1
2, 13, 14 は、耐食性が悪く、一方 No.8, 10, 11, 13
は加工性が悪いという結果を示した。また、図１は、本
発明の鋼No.1の非水電解液中での耐食性試験後の表面SE
M 写真であるが、比較例の鋼No.9の腐食状況を示す図
２、鋼No.15 の腐食状況を示す図３に比べると、ほとん
ど食孔は観察されなかった。これに対し、比較例はいず
れも激しい食孔が観察された。As shown in Table 1, in each of the examples of the present invention, almost no pitting corrosion was observed even in the non-aqueous electrolyte, and the Vickers hardness, which is a measure of cold header workability, was 200 or less. It was found that the product had an elongation of 40% or more and had excellent corrosion resistance and workability. On the other hand, Ni, Mo and N do not satisfy the conditions of the present invention No. 7, 9, 1
Nos. 2, 13, 14 have poor corrosion resistance, while Nos. 8, 10, 11, 13
Showed poor workability. Further, FIG. 1 shows the surface SE of the steel No. 1 of the present invention after the corrosion resistance test in the non-aqueous electrolyte.
Although it is an M photograph, almost no pits were observed as compared with FIG. 2 showing the corrosion state of Steel No. 9 of the comparative example and FIG. 3 showing the corrosion state of Steel No. 15. On the contrary, in all the comparative examples, a severe pitting was observed.
【００１８】[0018]
【表１】 [Table 1]
【００１９】実施例２ 本発明の効果をさらに検証するために、非水二次電池を
作製し、充放電サイクル後の電池容量保持率および正極
集電体の腐食状況を観察した。この電池の正極には、正
極活物質として、リチウムコバルト複合酸化物粉末91重
量部に、導電材であるグラファイト６重量部およびバイ
ンダーであるフッ化ビニリデン樹脂３重量部を混合し、
これにＮ−メチルピロリドンを加えてペーストとし、こ
のペーストを正極集電体としての本発明鋼、および比較
鋼の金属箔に塗布乾燥したものを用いた。また、負極に
は、負極活物質として、カーボン90重量部にバインダー
であるフッ化ビニリデン樹脂10重量部を混合し、これに
Ｎ−メチルピロリドンを加えてペーストとし、このペー
ストを負極集電体である銅箔に塗布乾燥したものを用い
た。電解液としてはプロピレンカーボネートとジエチル
カーボネートの１：１混合溶媒に電解質LiPF6 を１mol/
L 溶解したものを用い、セパレータはポリプロピレンフ
ィルムに微小な孔が多数形成されているものを使用し
た。その結果を表１に示す。Example 2 In order to further verify the effect of the present invention, a non-aqueous secondary battery was produced, and the battery capacity retention rate after the charge / discharge cycle and the corrosion state of the positive electrode current collector were observed. For the positive electrode of this battery, as a positive electrode active material, 91 parts by weight of lithium cobalt composite oxide powder, 6 parts by weight of graphite as a conductive material and 3 parts by weight of vinylidene fluoride resin as a binder were mixed,
N-methylpyrrolidone was added to this to make a paste, and the paste was applied to the metal foil of the present invention as the positive electrode current collector and the comparative steel and dried. For the negative electrode, as a negative electrode active material, 90 parts by weight of carbon was mixed with 10 parts by weight of vinylidene fluoride resin as a binder, and N-methylpyrrolidone was added to form a paste. This paste was used as a negative electrode current collector. A copper foil applied and dried was used. The electrolyte solution used was a 1: 1 mixed solvent of propylene carbonate and diethyl carbonate with 1 mol / mol of electrolyte LiPF 6.
L Dissolved product was used, and the separator used was a polypropylene film in which many fine holes were formed. Table 1 shows the results.
【００２０】作製した電池について充電電圧 4.3Ｖ、放
電終了電圧 2.5Ｖの充放電サイクルを 500回行ったとこ
ろ、正極集電体として本発明部材を使用した電池の容量
保持率は発明部材では60％以上を示したが、比較部材で
は50％以下の保持率であった（表１）。さらに、この電
池を解体して正極集電体を取り出し、金属箔表面の腐食
観察を行ったところ、本発明適合例には食孔状の腐食が
認められなかったのに対し、比較例では多くの食孔が認
められた。The prepared battery was subjected to 500 charging / discharging cycles with a charging voltage of 4.3 V and a discharge end voltage of 2.5 V. The capacity retention of the battery using the member of the present invention as the positive electrode current collector was 60% in the invention member. Although the above was shown, the comparative member had a retention rate of 50% or less (Table 1). Furthermore, the battery was disassembled, the positive electrode current collector was taken out, and the surface of the metal foil was observed for corrosion. Corrosion in the form of pits was not observed in the examples of the present invention, whereas in the comparative examples, many were observed. Pits were observed.
【００２１】[0021]
【発明の効果】以上説明したように本発明によれば、非
水電解液に対して優れた耐食性を示すとともに、冷間ヘ
ッダー加工性にも優れており、高エネルギー密度を有す
る小型で軽量な二次電池正極部材として好適な素材を提
供することができる。しかも、製造性に優れ安価で寿命
の長い電池部材を製造するのに有利である。As described above, according to the present invention, not only excellent corrosion resistance to non-aqueous electrolyte but also excellent cold header workability, small size and light weight with high energy density are achieved. A material suitable for a secondary battery positive electrode member can be provided. Moreover, it is advantageous for manufacturing a battery member that is excellent in manufacturability, inexpensive, and has a long life.
【図１】本発明にかかる電池部材（鋼No.1) について
の、LiPF6 系非水電解液中での定電位24時間保持後の金
属表面の組織状態の一例を示す金属顕微鏡の写真（ＳＥ
Ｍ組織写真）である。FIG. 1 is a photograph of a metallurgical microscope showing an example of the texture state of the metal surface of a battery member (Steel No. 1) according to the present invention after holding at a constant potential for 24 hours in a LiPF 6 non-aqueous electrolyte solution ( SE
(M organization photograph).
【図２】比較例 (鋼No.9) にかかる電池部材について
の、LiPF6 系非水電解液中での定電位24時間保持後の金
属表面の組織状態の一例を示す金属顕微鏡の写真（ＳＥ
Ｍ組織写真）である。FIG. 2 is a photograph of a metallurgical microscope showing an example of the texture state of the metal surface of a battery member according to a comparative example (Steel No. 9) after being held at a constant potential for 24 hours in a LiPF 6 -based nonaqueous electrolyte solution ( SE
(M organization photograph).
【図３】比較例 (鋼No.15)にかかる電池部材について
の、LiPF6 系非水電解液中での定電位24時間保持後の金
属表面の組織状態の一例を示す金属顕微鏡の写真（ＳＥ
Ｍ組織写真）である。FIG. 3 is a photograph of a metallurgical microscope showing an example of the texture state of the metal surface of a battery member according to a comparative example (Steel No. 15) after being kept at a constant potential for 24 hours in a LiPF 6 non-aqueous electrolyte solution ( SE
(M organization photograph).
フロントページの続き (72)発明者 藤原 最仁 神奈川県川崎市川崎区小島町４番２号 日 本冶金工業株式会社技術研究所内 (72)発明者 小林 裕 神奈川県川崎市川崎区小島町４番２号 日 本冶金工業株式会社技術研究所内 (72)発明者 村野 寛治 東京都品川区北品川６丁目７番35号 ソニ ー株式会社内Front page continuation (72) Inventor Saito Fujiwara 4-2 Kojima-cho, Kawasaki-ku, Kawasaki, Kanagawa Nihon Metallurgical Industry Co., Ltd. Technical Research Institute (72) Yutaka Kobayashi 4 Kojima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 2 Nihon Metallurgical Industry Co., Ltd. Technical Research Institute (72) Inventor Kanji Murano 6-735 Kitashinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation
Claims (3)
するオーステナイト系ステンレス鋼からなる、単電池あ
たり4.３Ｖを上限として充電される非水二次電池用の部
材であって、この部材が20〜30wt％のNiと0.05〜0.40wt
％のＮを含有するオーステナイト系ステンレス鋼である
ことを特徴とする非水二次電池用部材。1. A member for a non-aqueous secondary battery, which is made of austenitic stainless steel containing at least Cr and Mo as essential components and is charged up to 4.3 V per unit cell. ~ 30wt% Ni and 0.05-0.40wt
% N containing austenitic stainless steel, non-aqueous secondary battery member.
下、Ｐ：0.05wt％以下、Ｓ：0.03wt％以下、Cr：16〜30
wt％、Ni：20〜30wt％、Mo：２〜８wt％、Ｎ：0.05〜0.
40wt％、残部がFeおよび不可避的不純物からなる成分組
成を有するものであることを特徴とする、請求項１に記
載の非水二次電池用部材。2. The austenitic stainless steel comprises C: 0.08 wt% or less, Si: 1.5 wt% or less, Mn: 2.00 wt% or less, P: 0.05 wt% or less, S: 0.03 wt% or less, Cr: 16 ~ 30
wt%, Ni: 20-30 wt%, Mo: 2-8 wt%, N: 0.05-0.
The non-aqueous secondary battery member according to claim 1, wherein the component composition is 40 wt% and the balance is Fe and inevitable impurities.
下、Ｐ：0.05wt％以下、Ｓ：0.03wt％以下、Cr：22〜30
wt％、Ni：23〜30wt％、Mo：５〜８wt％、Ｎ：0.15〜0.
25wt％、残部がFeおよび不可避的不純物からなる成分組
成を有するものであることを特徴とする、請求項１に記
載の非水二次電池用部材。3. The austenitic stainless steel according to claim 1, wherein C: 0.08 wt% or less, Si: 1.5 wt% or less, Mn: 2.00 wt% or less, P: 0.05 wt% or less, S: 0.03 wt% or less, Cr: 22. ~ 30
wt%, Ni: 23-30 wt%, Mo: 5-8 wt%, N: 0.15-0.
The nonaqueous secondary battery member according to claim 1, wherein the nonaqueous secondary battery member has a composition of 25 wt% and the balance is Fe and inevitable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7192614A JPH0922701A (en) | 1995-07-06 | 1995-07-06 | Positive electrode member for non-aqueous secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7192614A JPH0922701A (en) | 1995-07-06 | 1995-07-06 | Positive electrode member for non-aqueous secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0922701A true JPH0922701A (en) | 1997-01-21 |
Family
ID=16294196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7192614A Abandoned JPH0922701A (en) | 1995-07-06 | 1995-07-06 | Positive electrode member for non-aqueous secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0922701A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064028A1 (en) * | 2003-12-26 | 2005-07-14 | Matsushita Electric Industrial Co., Ltd. | Material of case for storage cell |
| WO2005104294A1 (en) * | 2004-04-20 | 2005-11-03 | Actipass Co., Ltd. | Waveguide rotary joint structure using circular waveguide transformer |
| EP1670086A1 (en) * | 2004-12-08 | 2006-06-14 | Wilson Greatbatch Technologies, Inc. | Nickel-based alloys as positive electrode current collectors in electrochemical cells containing nonaqueous electrolytes |
| JP2009007627A (en) * | 2007-06-28 | 2009-01-15 | Jfe Steel Kk | Austenitic stainless steel for solid polymer type fuel cell separator and solid polymer type fuel cell using the same |
| EP1986255A3 (en) * | 2007-04-20 | 2010-04-28 | Nissan Motor Co., Ltd. | Secondary battery with non-aqueous electrolyte and corrosion-resistant collector |
| JPWO2020004595A1 (en) * | 2018-06-27 | 2021-03-25 | 日鉄ケミカル＆マテリアル株式会社 | Secondary battery Stainless steel foil current collector for positive electrode and secondary battery |
| WO2023042871A1 (en) * | 2021-09-17 | 2023-03-23 | セントラル硝子株式会社 | Non-aqueous solution, retention method, and non-aqueous battery |
-
1995
- 1995-07-06 JP JP7192614A patent/JPH0922701A/en not_active Abandoned
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064028A1 (en) * | 2003-12-26 | 2005-07-14 | Matsushita Electric Industrial Co., Ltd. | Material of case for storage cell |
| CN100449025C (en) * | 2003-12-26 | 2009-01-07 | 松下电器产业株式会社 | Material of case for storage cell |
| EP1992707A3 (en) * | 2003-12-26 | 2009-01-07 | Panasonic Corporation | Material of case for storage cell |
| US7515395B2 (en) | 2003-12-26 | 2009-04-07 | Panasonic Corporation | Material of case for storage cell |
| WO2005104294A1 (en) * | 2004-04-20 | 2005-11-03 | Actipass Co., Ltd. | Waveguide rotary joint structure using circular waveguide transformer |
| EP1670086A1 (en) * | 2004-12-08 | 2006-06-14 | Wilson Greatbatch Technologies, Inc. | Nickel-based alloys as positive electrode current collectors in electrochemical cells containing nonaqueous electrolytes |
| US7465521B2 (en) * | 2004-12-08 | 2008-12-16 | Greatbatch Ltd. | Nickel-based alloys as positive electrode support materials in electrochemical cells containing nonaqueous electrolytes |
| EP1986255A3 (en) * | 2007-04-20 | 2010-04-28 | Nissan Motor Co., Ltd. | Secondary battery with non-aqueous electrolyte and corrosion-resistant collector |
| JP2009007627A (en) * | 2007-06-28 | 2009-01-15 | Jfe Steel Kk | Austenitic stainless steel for solid polymer type fuel cell separator and solid polymer type fuel cell using the same |
| JPWO2020004595A1 (en) * | 2018-06-27 | 2021-03-25 | 日鉄ケミカル＆マテリアル株式会社 | Secondary battery Stainless steel foil current collector for positive electrode and secondary battery |
| US12100844B2 (en) | 2018-06-27 | 2024-09-24 | Nippon Steel Chemical & Material Co., Ltd. | Stainless foil current collector for secondary battery positive electrodes |
| WO2023042871A1 (en) * | 2021-09-17 | 2023-03-23 | セントラル硝子株式会社 | Non-aqueous solution, retention method, and non-aqueous battery |
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