JP2000173627A5 - - Google Patents
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- JP2000173627A5 JP2000173627A5 JP1998345095A JP34509598A JP2000173627A5 JP 2000173627 A5 JP2000173627 A5 JP 2000173627A5 JP 1998345095 A JP1998345095 A JP 1998345095A JP 34509598 A JP34509598 A JP 34509598A JP 2000173627 A5 JP2000173627 A5 JP 2000173627A5
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- JP
- Japan
- Prior art keywords
- organic electrolyte
- electrolyte battery
- sulfone group
- lithium salt
- organic
- 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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- 239000005486 organic electrolyte Substances 0.000 claims description 33
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N Tetraethylene glycol dimethyl ether Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 claims description 21
- 229910003002 lithium salt Inorganic materials 0.000 claims description 16
- 159000000002 lithium salts Chemical class 0.000 claims description 16
- 125000001174 sulfone group Chemical group 0.000 claims description 14
- 239000003960 organic solvent Substances 0.000 claims description 8
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 claims description 3
- CMJLMPKFQPJDKP-UHFFFAOYSA-N 3-methylthiolane 1,1-dioxide Chemical compound CC1CCS(=O)(=O)C1 CMJLMPKFQPJDKP-UHFFFAOYSA-N 0.000 claims description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N Sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 claims 2
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 claims 2
- 229920000069 poly(p-phenylene sulfide) Polymers 0.000 claims 2
- 229920002678 cellulose Polymers 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 239000012046 mixed solvent Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 description 10
- 238000009835 boiling Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 2
- -1 perfluoro methylsulfonyl imide Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Description
請求項１から５に記載の発明は、正極、負極、セパレータ及び有機電解液から構成される発電要素を正極缶、負極缶及びガスケットを備えたハウジング部材に収納した有機電解液電池であって、テトラグライムを含む有機溶媒と、スルホン基を有するリチウム塩を主体とする溶質からなる有機電解液を用いることを特徴とする。 The invention according to claim 1 to 5 is an organic electrolyte battery in which a power generation element composed of a positive electrode, a negative electrode, a separator, and an organic electrolyte is housed in a housing member including a positive electrode can, a negative electrode can, and a gasket, An organic electrolytic solution comprising an organic solvent containing tetraglyme and a solute mainly composed of a lithium salt having a sulfone group is used.
テトラグライムの沸点は、２７５℃であり、リフロー炉内部の温度よりも高い。従って、２５０℃近傍の温度領域において、テトラグライムは比較的高い蒸気圧を有するが、安定な状態である。更に、溶質としてリチウム塩が溶解されているために、テトラグライムを含む本発明に係る有機電解液では、その沸点がモル沸点上昇によってテトラグライム単体での沸点に比べて更に高くなり、高温環境下における特性で有効に作用するものである。 The boiling point of tetraglyme is 275 ° C., which is higher than the temperature inside the reflow furnace. Therefore, in the temperature range near 250 ° C., tetraglyme has a relatively high vapor pressure, but is in a stable state. Furthermore, since the lithium salt is dissolved as a solute, in the organic electrolyte solution according to the present invention containing tetraglyme, the boiling point becomes higher than the boiling point of tetraglyme alone due to the rise of the molar boiling point, and in a high temperature environment. It works effectively with the characteristics of.
高温域における良好な特性に対して、テトラグライムを含む溶媒を用いた有機電解液は、低温域においても良好な特性を有する。有機電解液電池に対する要求として、低温の環境下における放電特性の確保があげられる。一般に沸点の高い溶媒は融点が高く、且つ粘度も大きい傾向がある。このため、低温領域における電解液の導電率が低く、例えば−２０℃にまで温度が低下すると、有機電解液中のリチウムイオンが有効に移動できなくなり、放電容量が殆ど得られない。これに対して、テトラグライムは、２７５℃という高い沸点を示すにもかかわらず、−３０℃と低い融点を示し、テトラグライムが溶液として存在する温度範囲は、約３００℃と広いのが特徴である。このテトラグライムを溶媒に用いることにより、有機電解液は−２０℃の環境下におかれても導電率を維持することができる。さらに、放電反応時におけるリチウム塩の移動がスムーズになり、幅広い温度範囲にて放電容量の維持が可能となる。 In contrast to good characteristics in a high temperature range, an organic electrolyte using a solvent containing tetraglyme has good characteristics even in a low temperature range. As a requirement for the organic electrolyte battery, securing of discharge characteristics in a low temperature environment can be mentioned. In general, a solvent having a high boiling point tends to have a high melting point and a high viscosity. For this reason, the electrical conductivity of the electrolytic solution in the low temperature region is low. When the temperature is lowered to, for example, −20 ° C., lithium ions in the organic electrolytic solution cannot effectively move, and a discharge capacity is hardly obtained. On the other hand, tetraglyme has a low melting point of −30 ° C. despite having a high boiling point of 275 ° C., and the temperature range in which tetraglyme exists as a solution is as wide as about 300 ° C. is there. By using this tetraglyme as a solvent, the organic electrolyte can maintain electrical conductivity even in an environment of −20 ° C. Furthermore, the lithium salt moves smoothly during the discharge reaction, and the discharge capacity can be maintained over a wide temperature range.
尚、本実施の形態では、溶媒としてテトラグライムを含み、他の溶媒が混入される構成としても良いが、テトラグライムのみからなる単独溶媒を用いる構成が好ましい。このテトラグライム単独の溶媒からなる有機電解液を用いた電池は、放電特性に最も
優れる。
In this embodiment, tetraglyme may be included as a solvent and another solvent may be mixed. However, a configuration using a single solvent composed only of tetraglyme is preferable. A battery using an organic electrolyte composed of a solvent of tetraglyme alone has the best discharge characteristics.
このように、テトラグライムを含む有機溶媒と、スルホン基を有し、好ましくは分子構造中にイミド結合を備えたリチウム塩を溶質とする有機溶媒を用いることにより、耐高温特性が飛躍的に向上する有機電解液電池を得ることが可能である。 Thus, by using an organic solvent containing tetraglyme and an organic solvent having a sulfone group and preferably a lithium salt having an imide bond in the molecular structure, the high temperature resistance is dramatically improved. It is possible to obtain an organic electrolyte battery.
以上より、本実施例における電池Ａ乃至Ｅは、放電性能、充放電サイクル性能、リフロー炉通過時における耐高温性能のいずれにおいても優れた結果を見出すことができた。これは、有機電解液の溶媒であるテトラグライムの耐熱性と、溶質であるリチウムビスパーフルオロメチルスルホニルイミドの耐熱性、導電性及びリチウムアルミニウム合金負極に対する安定性によるものである。また、溶質にリチウムビスパーフルオロエチルスルホニルイミドを用いた場合においても上記と全く同様の結果を得ることができた。 As described above, the batteries A to E in this example were able to find excellent results in any of the discharge performance, the charge / discharge cycle performance, and the high temperature resistance performance when passing through the reflow furnace. This is due stability to the heat resistance of tetraglyme are Solvent organic electrolytic solution, the heat resistance of lithium bis perfluoro methylsulfonyl imide solute, conductivity and lithium aluminum alloy negative electrode. In addition, when lithium bisperfluoroethylsulfonylimide was used as the solute, the same result as above could be obtained.
【００７１】
【発明の効果】以上のように、本発明によれば、有機電解液にテトラグライムを含む溶媒、もしくはテトラグライムと、スルホラン及び／もしくは３−メチルスルホランからなる溶媒を用いることにより、リフロー法を用いた基板実装に耐える耐高温特性を備えると共に、低温環境下での放電特性、長期保存時の信頼性に優れた有機電解電池を提供することができ、その工業的価値は大なるものである。
[0071]
As described above, according to the present invention, the reflow method can be achieved by using a solvent containing tetraglyme in the organic electrolyte or a solvent comprising tetraglyme and sulfolane and / or 3-methylsulfolane. It is possible to provide an organic electrolytic battery with high temperature resistance that can withstand the substrate mounting used, and excellent discharge characteristics under low temperature environment and reliability during long-term storage, and its industrial value is great. .
Claims (13)
したことを特徴とする有機電解液電池。An organic electrolyte battery in which a power generation element composed of a positive electrode, a negative electrode, a separator, and an organic electrolyte is housed in a housing member having a positive electrode can, a negative electrode can, and a gasket, wherein the organic electrolyte contains tetraglyme An organic electrolyte battery comprising an organic solvent and a solute mainly composed of a lithium salt having a sulfone group, and wherein the gasket is composed of polyphenylene sulfide.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34509598A JP4195949B2 (en) | 1998-12-04 | 1998-12-04 | Organic electrolyte battery that can be mounted automatically by reflow method |
| US09/357,225 US6274277B1 (en) | 1998-07-23 | 1999-07-20 | Organic electrolyte battery |
| EP99305821A EP0975042A3 (en) | 1998-07-23 | 1999-07-22 | Organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34509598A JP4195949B2 (en) | 1998-12-04 | 1998-12-04 | Organic electrolyte battery that can be mounted automatically by reflow method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000173627A JP2000173627A (en) | 2000-06-23 |
| JP2000173627A5 true JP2000173627A5 (en) | 2005-04-14 |
| JP4195949B2 JP4195949B2 (en) | 2008-12-17 |
Family
ID=18374258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34509598A Expired - Lifetime JP4195949B2 (en) | 1998-07-23 | 1998-12-04 | Organic electrolyte battery that can be mounted automatically by reflow method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4195949B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002075317A (en) | 2000-08-25 | 2002-03-15 | Sanyo Electric Co Ltd | High polymer material for battery, separator for battery, and insulating packing for battery and lithium battery |
| JP4765186B2 (en) * | 2001-03-29 | 2011-09-07 | パナソニック株式会社 | Organic electrolyte battery |
| JP4326201B2 (en) * | 2002-09-30 | 2009-09-02 | 三洋電機株式会社 | Heat-resistant lithium battery |
| JP4219180B2 (en) * | 2003-01-30 | 2009-02-04 | 三洋電機株式会社 | Lithium secondary battery |
| JP4668540B2 (en) * | 2003-02-28 | 2011-04-13 | Ｆｄｋ株式会社 | Heat-resistant lithium battery |
| JP2004335367A (en) | 2003-05-09 | 2004-11-25 | Sanyo Electric Co Ltd | Lithium secondary battery |
| JP4967464B2 (en) * | 2006-06-07 | 2012-07-04 | パナソニック株式会社 | Non-aqueous electrolyte secondary battery |
| JP5493288B2 (en) * | 2008-03-11 | 2014-05-14 | 日立化成株式会社 | Electrolytic solution and secondary battery using the same |
| JP2010073489A (en) * | 2008-09-18 | 2010-04-02 | Nissan Motor Co Ltd | Electrolyte excellent in thermal stability and secondary battery prepared using the same |
| JP6136618B2 (en) * | 2013-06-18 | 2017-05-31 | 株式会社豊田中央研究所 | Electrolytes |
-
1998
- 1998-12-04 JP JP34509598A patent/JP4195949B2/en not_active Expired - Lifetime
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