JP6386406B2 - 非水電解液一次電池 - Google Patents
非水電解液一次電池 Download PDFInfo
- Publication number
- JP6386406B2 JP6386406B2 JP2015068052A JP2015068052A JP6386406B2 JP 6386406 B2 JP6386406 B2 JP 6386406B2 JP 2015068052 A JP2015068052 A JP 2015068052A JP 2015068052 A JP2015068052 A JP 2015068052A JP 6386406 B2 JP6386406 B2 JP 6386406B2
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- JP
- Japan
- Prior art keywords
- aqueous electrolyte
- battery
- positive electrode
- lithium
- negative electrode
- 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.)
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- 239000011255 nonaqueous electrolyte Substances 0.000 title claims description 84
- 229910052744 lithium Inorganic materials 0.000 claims description 42
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- -1 unsaturated cyclic sultone compound Chemical class 0.000 claims description 29
- 239000007774 positive electrode material Substances 0.000 claims description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 16
- 229910000733 Li alloy Inorganic materials 0.000 claims description 15
- 239000001989 lithium alloy Substances 0.000 claims description 15
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- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
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- 229910013684 LiClO 4 Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
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- 239000004332 silver Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
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- 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
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Description
<正極の作製>
正極活物質である二酸化マンガンと、導電助剤であるカーボンブラックと、バインダであるPTFEとを、93:3:4の質量比で混合して調製した正極合剤を成形して、直径16mm、厚み0.73mmの正極(正極合剤成形体)を得た。
厚みが0.24mmのリチウム箔の片面に、厚みが6μmのアルミニウム箔を圧着し、これを直径16mmの円形に打ち抜いて、負極用積層体を得た。
PCとDMEとを、体積比1:1で混合した混合溶媒に、LiClO4を0.5mol/lの濃度で溶解させ、更に2質量%となる量のPRSを添加して、非水電解液を調製した。
前記の正極と負極用積層体と非水電解液とを使用し、セパレータにPP製の不織布(厚み170μm)を使用して、図1に示す構造で、直径20mm、高さ1.6mmの非水電解液電池を組み立てた。
PRSに代えて1,3−プロパンスルトン(PS)を用いた以外は実施例1と同様にして非水電解液を調製し、この非水電解液を用いた以外は実施例1と同様にして非水電解液電池を作製した。
PRSの添加量を0.5質量%とした以外は実施例1と同様にして非水電解液を調製し、この非水電解液を用いた以外は実施例1と同様にして非水電解液電池を作製した。
実施例1および比較例1、2の非水電解液電池について、下記の条件で、初度および放電深度が60%の電池に対する高温貯蔵後の放電特性の評価を行った。
実施例1および比較例1の非水電解液電池について、15kΩの抵抗を接続して、正極容量に対する放電深度が60%になるまで放電を行った。放電後の各電池を120℃に調整した恒温槽内に入れ、表2に示す時間ごとに各電池の高さを測定し、電池製造直後の高さ(1.6mm)からの変化量(電池膨れ量)を求めた。
2 正極
3 負極
4 セパレータ
5 外装缶
6 封口板
7 絶縁ガスケット
Claims (4)
- 金属リチウムまたはリチウム合金を含有する負極、正極、セパレータおよび非水電解液を有する非水電解液一次電池であって、
前記正極は、正極活物質として二酸化マンガンを含有しており、
前記非水電解液として、少なくとも環状カーボネートを溶媒とし、かつ不飽和環状スルトン化合物を0.7〜10質量%含有する電解液を用いたことを特徴とする非水電解液一次電池。 - 前記非水電解液が、有機溶媒として、環状カーボネートとエーテルとを含有する請求項1または2に記載の非水電解液一次電池。
- 前記環状カーボネートと前記エーテルとの量比が、体積比で、環状カーボネート:エーテル=30:70〜70:30である請求項3に記載の非水電解液一次電池。
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