JPH0210666A - Nonaqueous electrolyte secondary battery - Google Patents
Nonaqueous electrolyte secondary batteryInfo
- Publication number
- JPH0210666A JPH0210666A JP63161573A JP16157388A JPH0210666A JP H0210666 A JPH0210666 A JP H0210666A JP 63161573 A JP63161573 A JP 63161573A JP 16157388 A JP16157388 A JP 16157388A JP H0210666 A JPH0210666 A JP H0210666A
- Authority
- JP
- Japan
- Prior art keywords
- carbonate
- lithium
- aqueous electrolyte
- dec
- dmc
- 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.)
- Granted
Links
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims abstract description 14
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims abstract description 33
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims abstract description 21
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims abstract description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 18
- 150000005678 chain carbonates Chemical class 0.000 claims abstract description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract 2
- 229910045601 alloy Inorganic materials 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 12
- 238000007599 discharging Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229910000733 Li alloy Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000001989 lithium alloy Substances 0.000 description 2
- 229910001947 lithium oxide Inorganic materials 0.000 description 2
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 2
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- KSECJOPEZIAKMU-UHFFFAOYSA-N [S--].[S--].[S--].[S--].[S--].[V+5].[V+5] Chemical compound [S--].[S--].[S--].[S--].[S--].[V+5].[V+5] KSECJOPEZIAKMU-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001786 chalcogen compounds Chemical class 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TVWWSIKTCILRBF-UHFFFAOYSA-N molybdenum trisulfide Chemical compound S=[Mo](=S)=S TVWWSIKTCILRBF-UHFFFAOYSA-N 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- CFJRPNFOLVDFMJ-UHFFFAOYSA-N titanium disulfide Chemical compound S=[Ti]=S CFJRPNFOLVDFMJ-UHFFFAOYSA-N 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、非水電解液二次電池に関し、特にその電解液
の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to non-aqueous electrolyte secondary batteries, and particularly to improvements in the electrolyte thereof.
従来の技術
従来、この種の非水電解液電池は、高電圧・高エネルギ
ー密度を有し、かつ貯蔵性、耐漏液性などの信頼性にす
ぐれるため、広く民生用電子機器の電源に用いられてい
る。また、最近ではこの電池を二次電池化する試みが盛
んである。二次電池は負極にリチウム合金あるいは金属
リチウム、正極には負極から溶出したリチウムイオンを
収納できる反応席をもった、結晶構造が層状あるいはト
ンネル構造を有する遷移金属の酸化物やカルコゲン化合
物が検討されており、充放電リチウムイオンが電解液を
介し正極、負極の間を移動する。電解液については、−
次電池においてプロピレンカーボネートが、その支持塩
をよく溶かし、リチウムに対し安定で、しかも放電特性
に優れるという性質からリチウム／二酸化マンガン、リ
チウム／酸化銅電池などの一次電池で広く用いられてい
る。Conventional technology Conventionally, this type of non-aqueous electrolyte battery has been widely used as a power source for consumer electronic devices because it has high voltage and high energy density, and has excellent reliability such as storage performance and leakage resistance. It is being Recently, there have been many attempts to convert this battery into a secondary battery. For secondary batteries, the negative electrode is a lithium alloy or metallic lithium, and the positive electrode is a transition metal oxide or chalcogen compound that has a layered or tunnel crystal structure and has a reaction site that can store lithium ions eluted from the negative electrode. The charging and discharging lithium ions move between the positive and negative electrodes via the electrolyte. Regarding the electrolyte, −
In secondary batteries, propylene carbonate is widely used in primary batteries such as lithium/manganese dioxide and lithium/copper oxide batteries because it dissolves its supporting salt well, is stable against lithium, and has excellent discharge characteristics.
発明が解決しようとする課題
このように−次電池では優れた電解液であるプロピレン
カーボネートであるが、二次電池の電解液として用いる
場合、確かに充電効率はほぼ１００チの値を示すが、充
放電効率（放電容量÷充電容量）は約６０〜６０％と低
い。Problems to be Solved by the Invention As described above, propylene carbonate is an excellent electrolyte for secondary batteries, but when used as an electrolyte for secondary batteries, the charging efficiency certainly shows a value of approximately 100 cm. The charge/discharge efficiency (discharge capacity/charge capacity) is as low as about 60 to 60%.
これは多くの文献などに示されているように、電析した
活性なリチウムとプロピレンカーボネートとが反応して
プロピレンカーボネートが分解するためである。このた
め、二次電池には用りがだい。This is because, as shown in many literatures, the electrodeposited active lithium reacts with propylene carbonate and the propylene carbonate decomposes. For this reason, secondary batteries are of little use.
その反応は次に示す式に従って起こる。The reaction occurs according to the equation shown below.
まり負［にリチウム−アルミニウム合金などのリチウム
合金を用いた場合でも同じことがおこるといえる。The same thing can be said to occur even when a lithium alloy such as a lithium-aluminum alloy is used for the negative electrode.
本発明にはこのような従来の問題点を解消し、電解液中
のプロピレンカーボネートと電析する活性なリチウムと
の接触を妨げ、プロピレンカーボネートの分解忙よるガ
ス発生を抑制して二次電池としての実使用にたえること
ができるようにすることを目的とするものである。The present invention solves these conventional problems, prevents contact between propylene carbonate in the electrolyte and active lithium to be electrodeposited, and suppresses gas generation due to the decomposition of propylene carbonate, thereby making it possible to use it as a secondary battery. The purpose is to make it suitable for practical use.
課題を解決するための手段
そこで、本発明は、プロピレンカーボネートを含む非水
電解液にジメチルカーボネート、ジエチルカーボネート
のうちの少なくとも１つを添加したものである。Means for Solving the Problems According to the present invention, at least one of dimethyl carbonate and diethyl carbonate is added to a non-aqueous electrolyte containing propylene carbonate.
作 用
このように電解液にジエチルカーボネート、ジの
エチルカーボネートのうぢ少なくとも１つを添加するこ
とにより、電析リチウムと電解液中のプロピレンカーボ
ネートとの接触を妨げ、充放電効率を上げることができ
ることとなる。Effect: By adding at least one of diethyl carbonate and di-ethyl carbonate to the electrolytic solution in this way, it is possible to prevent contact between the electrodeposited lithium and propylene carbonate in the electrolytic solution, thereby increasing the charging and discharging efficiency. It becomes possible.
実施例 以下、本発明の一実施例を、図面とともに説明する。Example An embodiment of the present invention will be described below with reference to the drawings.
第１図は実施例に用いたコイン形二次電池の断面図であ
る。図で１は耐食性ステンレス製のケース、２は同じ材
質の封口板、３は封口板２の内面にヌボット溶接したニ
ッケルのグリッド、４はリチウム−アルミニウム合金（
リチウム８０Ｍ量％）で、直径１５廖、厚さ０．２４ｒ
ｔｍのディスク状に打ち抜いた負極活物質であシ、ニッ
ケルグリッド３に固着されている。６はポリプロピレン
製のセパレータである。６は正極で、市販の電解二酸化
マンガンを大気中において３５Ｃ）Ｃで５時間熱処理し
たもの１００重量部に導電材としてカーボンブラック１
ＯＮ量部とフッ素樹脂結着剤１０重量部を混合し、その
ｏ、１ｏｙを直径１６Ｍ、厚さ０．７閣に成型したもの
である。FIG. 1 is a sectional view of a coin-shaped secondary battery used in an example. In the figure, 1 is a case made of corrosion-resistant stainless steel, 2 is a sealing plate made of the same material, 3 is a nickel grid welded to the inner surface of the sealing plate 2, and 4 is a lithium-aluminum alloy (
Lithium (80M amount%), diameter 15 Liao, thickness 0.24r
The negative electrode active material is punched out into a disk shape of TM and is fixed to a nickel grid 3. 6 is a separator made of polypropylene. Reference numeral 6 is a positive electrode, in which 100 parts by weight of commercially available electrolytic manganese dioxide was heat-treated at 35 C) in the atmosphere for 5 hours, and 1 part carbon black was added as a conductive material.
Parts of ON and 10 parts by weight of a fluororesin binder were mixed, and the mixture was molded to have a diameter of 16M and a thickness of 0.7mm.
電解液はプロピレンカーボネ−１−（ＰＣ）、ジメトキ
ンエクン（ＤＭＥ）の二種に加え、ジメチルカーボネー
ト（ＤＭＣ）、 ジエチルカーボネート（ＤＥＣ）の
少なくともいずれかひとつから成る混合溶媒に過塩素酸
リチウムを１モｌし／ｌの濃度に溶解したものを用いた
が、添加剤（ジメチルカーボネート、ジエチルカーボネ
ート〕の効果を調べるため、次の■〜０に示す１１種類
の溶媒をそれぞれ用いたコイン形電池を作製し、それぞ
れの電池について充放電試験を行った。The electrolyte is a mixed solvent consisting of propylene carbonate (PC), dimethquinequine (DME), and at least one of dimethyl carbonate (DMC) and diethyl carbonate (DEC), and one portion of lithium perchlorate. To investigate the effect of additives (dimethyl carbonate, diethyl carbonate), we used coin-shaped batteries using each of the 11 types of solvents shown in (1) to (0) below. A charging and discharging test was conducted on each battery.
■ スタンダード：ＰＣ：ＤＭＥ＝５０：５０（容量混
合比）■ ＰＣ：ＤＭＣ：ＤＭＥ＝４５ ： ５ ：
６ｊＯ■ ＰＣ：ＤＭＣ：ＤＭＥ＝４０： １ｏ：ｔｓ
。■ Standard: PC: DME = 50:50 (capacity mixing ratio) ■ PC: DMC: DME = 45: 5:
6jO■ PC:DMC:DME=40: 1o:ts
.
■ ＰＣ：ＤＭＣ：ＤＭＥ＝３５：１５：５０■ ＰＣ
：ＤＭＣ：ＤＭＥ＝３０：２０：５０■ ＰＣ：ＤＭＣ
：ＤＭＥ−２５：２５：５０以上ＤＭＣ添加グループと
する。■ PC:DMC:DME=35:15:50■ PC
:DMC:DME=30:20:50■ PC:DMC
:DME-25: 25:50 or more DMC addition group.
■ ＰＣ：ＤＥＣ：ＤＭＥ＝４５：５：５０■ ＰＣ：
ＤＥＣ：ＤＭＥ＝４０：１０：５０■ ＰＣ：ＤＥＣ：
ＤＭＥ＝３５：１５：５０Ｑ ＰＣ：ＤＥＣ：ＤＭＥ
−３０：２０：５０＠ ＰＣ：ＤＥＣ：ＤＭＥ＝２５
：２５：５０以上ＤＥＣ添加グループとする。■ PC:DEC:DME=45:5:50■ PC:
DEC:DME=40:10:50■ PC:DEC:
DME=35:15:50Q PC:DEC:DME
-30:20:50@PC:DEC:DME=25
: 25:50 or more DEC addition group.
電解液を封口板内に注液後、上記の正極６を載置し、７
のポリプロピレン製ガスケットとともにかしめ、封口し
た。After pouring the electrolyte into the sealing plate, place the above positive electrode 6, and
It was caulked and sealed with a polypropylene gasket.
これらの電池を２０℃で２ｍＡ で充電が３．９０Ｖ、
放電が２．ＯＶまでの範囲で充放電試験を行った。Charging these batteries at 20°C with 2mA is 3.90V,
The discharge is 2. A charge/discharge test was conducted in the range up to OV.
このときのそれぞれの電池の５サイクル目の充放電効率
を第２図に示す。又、１１種類の電池について、２つの
グループ（ＤＭＣ添加、ＤＥＣ添加）に分け、電解液中
の溶媒成分の容積比、添加した鎖状カーボネートとＰＣ
のモル比、電池の充放電効率を以下の表１に示す。電池
にはＡ−にのアルファベット名を便宜上つけた。The charging and discharging efficiency of each battery at this time in the 5th cycle is shown in FIG. In addition, the 11 types of batteries were divided into two groups (DMC addition, DEC addition), and the volume ratio of the solvent component in the electrolyte, the added chain carbonate and PC
The molar ratio of and charge/discharge efficiency of the battery are shown in Table 1 below. For convenience, the batteries were given alphabetical names A-.
以上の実施例において第２図から明らかなようにＤＭＣ
の添加量は電解液全量の６〜１６％の範囲、言い換えれ
ばＰＣに対するモル比が０．１〜０．４の範囲で充放電
効率は比較的高い値を示す。In the above embodiment, as is clear from FIG.
The charge/discharge efficiency shows a relatively high value when the amount of addition is in the range of 6 to 16% of the total amount of the electrolyte, in other words, the molar ratio to PC is in the range of 0.1 to 0.4.
これは添加しない場合に比べ放電容量が増加したためで
ある。又、ＤＥＣを添加した場合にも電解液全量に対し
添加率が１０〜２０容量％ 、ＰＣに対するモル比が約
０．１５〜０．６の範囲で放電容量の増加による充放電
効率のアップが見られた。これらの結果に対する考察を
以下に示す。This is because the discharge capacity increased compared to the case without addition. Furthermore, when DEC is added, the charging and discharging efficiency can be improved by increasing the discharge capacity when the addition rate is 10 to 20% by volume based on the total amount of electrolyte and the molar ratio to PC is in the range of about 0.15 to 0.6. It was seen. A discussion of these results is shown below.
ＤＭＣ，ＤＥＣはそれぞれ次の様な構造を持つ鎖状カー
ボネートである。DMC and DEC are chain carbonates each having the following structure.
ＤＭＣ（ジメチルカーボネート）
ＤＥＣ（ジエチルカーボネート）
リチウムとジメチルカーボネートの反応からはリチウム
メタノキシド、リチウムとジエチルカーボネートからは
リチウムエタノキシドが生成される。それらのりチウム
アルコキシドがリチウム表面上を膜状に被い、そのため
電析した活性なリチウムとプロピレンカーボネートの反
応を阻止していると考えられる。DMC (dimethyl carbonate) DEC (diethyl carbonate) Lithium methanoxide is generated from the reaction of lithium and dimethyl carbonate, and lithium ethanoxide is generated from the reaction of lithium and diethyl carbonate. It is thought that these lithium alkoxides form a film on the lithium surface, thereby preventing the reaction between the electrodeposited active lithium and propylene carbonate.
発明の効果
以上のように本発明によれば、プロピレンカーボネート
を含む非水電解液にジメチルカーボネートヲプロピレン
カーポネートに対して体積比で０．１〜０．４の割合で
添加するか、もしくはジエチルカーボネートをプロピレ
ンカーボネートに対して体積比で０．２〜０．７の割合
で添加した非水電解液電池を構成することによシ、プロ
ピレンカーボネートと電析した活性なリチウムとの反応
を防止し、充放電効率を向上するという優れた結果が得
られる。Effects of the Invention As described above, according to the present invention, dimethyl carbonate is added to a nonaqueous electrolyte containing propylene carbonate at a volume ratio of 0.1 to 0.4 to propylene carbonate, or diethyl By configuring a non-aqueous electrolyte battery in which carbonate is added to propylene carbonate at a volume ratio of 0.2 to 0.7, the reaction between propylene carbonate and electrodeposited active lithium can be prevented. , an excellent result of improving charging and discharging efficiency can be obtained.
なお、実施例では正極活物質に二酸化マンガンを用いた
が、他の例えば、クロム酸化物（Ｃｒ３ｏ８゜Ｃｒ ２
０５など）、三硫化モリブデン、酸化バナジウム（Ｖ２
Ｏ３，Ｖ６Ｏ１３，Ｖ３Ｏ８）、二硫化チタン。In the examples, manganese dioxide was used as the positive electrode active material, but other materials such as chromium oxide (Cr3o8゜Cr2
05, etc.), molybdenum trisulfide, vanadium oxide (V2
O3, V6O13, V3O8), titanium disulfide.
オキシリンＩｔＷＡ 、 硫化バナジウム（ｖ２Ｓ１５
）。Oxyrin ItWA, vanadium sulfide (v2S15
).
Ｌｉｍｎ０ などであってもよい。It may be Limn0 or the like.
又、負極活物質にはりチウム−アルミニウム合金を用い
たが、リチウムとアルシミニウム以外トの合金や、純金
属リチウムであってもよい。Further, although a lithium-aluminum alloy is used as the negative electrode active material, an alloy of lithium and other materials other than aluminum or pure metal lithium may be used.
又、電解液の溶質に過塩素酸リチウムを用いたが、これ
もＬ ｚ Ａ ｓ Ｆ ｅ 、 Ｌ Ｉ ＣＦ ｓ Ｓ
Ｏｓ 、Ｌ Ｉ Ｂ Ｆ ４ 。In addition, lithium perchlorate was used as the solute of the electrolytic solution, but this also
Os, L I B F 4 .
Ｌ Ｉ Ａ Ｉ Ｃ１４などであってもよい。It may be LI A I C14 or the like.
第１図は本発明の実施例におけるコイン形電池の断面図
、第２図は１１種類の電池のそれぞれの５サイクル目の
充放電効率を示す図である。
１・・・・・・ケース、２・・・・・・封口板、３・・
・・・・ニッケルのグリッド、４・・・・・・リチウム
−アルミニウム合金、５・・・・・・セパレータ、６・
・・・・・正極、７・・・・・・ガスケット。FIG. 1 is a cross-sectional view of a coin-shaped battery in an example of the present invention, and FIG. 2 is a diagram showing the charging/discharging efficiency of each of 11 types of batteries at the fifth cycle. 1... Case, 2... Sealing plate, 3...
... Nickel grid, 4 ... Lithium-aluminum alloy, 5 ... Separator, 6.
...Positive electrode, 7...Gasket.
Claims (3)
は金属リチウムからなる負極と、プロピレンカーボネー
トを含む非水電解液と、正極とを備え、上記非水電解液
に鎖状カーボネートを添加した非水電解液二次電池。(1) A non-aqueous electrolyte comprising a negative electrode made of an alloy or metallic lithium that can absorb and release lithium ions, a non-aqueous electrolyte containing propylene carbonate, and a positive electrode, and a chain carbonate added to the non-aqueous electrolyte. Liquid secondary battery.
チルカーボネート、ジエチルカーボネートのうち少なく
とも１つである特許請求の範囲第１項記載の非水電解液
二次電池。(2) The non-aqueous electrolyte secondary battery according to claim 1, wherein the chain carbonate added to the non-aqueous electrolyte is at least one of dimethyl carbonate and diethyl carbonate.
ジメチルカーボネートの添加率がプロピレンカーボネー
トに対して体積比で０．１〜０．４の割合、もしくはジ
エチルカーボネートの添加率がプロピレンカーボネート
に対して体積比で０．２〜０．７の割合である特許請求
の範囲第１項又は第２項に記載の非水電解液二次電池。(3) Among the chain carbonates added to the non-aqueous electrolyte,
The addition rate of dimethyl carbonate is 0.1 to 0.4 in volume ratio to propylene carbonate, or the addition rate of diethyl carbonate is 0.2 to 0.7 in volume ratio to propylene carbonate. A non-aqueous electrolyte secondary battery according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63161573A JP2701327B2 (en) | 1988-06-29 | 1988-06-29 | Non-aqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63161573A JP2701327B2 (en) | 1988-06-29 | 1988-06-29 | Non-aqueous electrolyte secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0210666A true JPH0210666A (en) | 1990-01-16 |
| JP2701327B2 JP2701327B2 (en) | 1998-01-21 |
Family
ID=15737681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63161573A Expired - Lifetime JP2701327B2 (en) | 1988-06-29 | 1988-06-29 | Non-aqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2701327B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994014205A1 (en) * | 1992-12-04 | 1994-06-23 | Sony Corporation | Secondary cell of nonaqueous electrolyte |
| US5437945A (en) * | 1993-03-19 | 1995-08-01 | Sony Corporation | Secondary battery having non-aqueous electrolyte |
| EP0696077A2 (en) | 1994-07-07 | 1996-02-07 | Mitsui Petrochemical Industries, Ltd. | Non-aqueous electrolyte solutions and secondary cells comprising the same |
| US5639575A (en) * | 1992-12-04 | 1997-06-17 | Sony Corporation | Non-aqueous liquid electrolyte secondary battery |
| US6291108B1 (en) | 1989-12-12 | 2001-09-18 | Sanyo Electric Co., Ltd. | Non-aqueous electrolyte cell |
| JP2008218326A (en) * | 2007-03-07 | 2008-09-18 | Nec Corp | Electric storage device |
| US8771881B2 (en) | 2008-05-21 | 2014-07-08 | Samsung Sdi Co., Ltd. | Electrolyte for lithium ion secondary battery and lithium ion secondary battery comprising the same |
| WO2021108995A1 (en) * | 2019-12-03 | 2021-06-10 | 宁德时代新能源科技股份有限公司 | Secondary battery, electrolyte, and device containing secondary battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056663A (en) * | 1975-11-03 | 1977-11-01 | P. R. Mallory & Co. Inc. | Performance in an organic electrolyte |
-
1988
- 1988-06-29 JP JP63161573A patent/JP2701327B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056663A (en) * | 1975-11-03 | 1977-11-01 | P. R. Mallory & Co. Inc. | Performance in an organic electrolyte |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6291108B1 (en) | 1989-12-12 | 2001-09-18 | Sanyo Electric Co., Ltd. | Non-aqueous electrolyte cell |
| WO1994014205A1 (en) * | 1992-12-04 | 1994-06-23 | Sony Corporation | Secondary cell of nonaqueous electrolyte |
| US5639575A (en) * | 1992-12-04 | 1997-06-17 | Sony Corporation | Non-aqueous liquid electrolyte secondary battery |
| US5437945A (en) * | 1993-03-19 | 1995-08-01 | Sony Corporation | Secondary battery having non-aqueous electrolyte |
| EP0696077A2 (en) | 1994-07-07 | 1996-02-07 | Mitsui Petrochemical Industries, Ltd. | Non-aqueous electrolyte solutions and secondary cells comprising the same |
| EP0696077A3 (en) * | 1994-07-07 | 1996-05-08 | Mitsui Petrochemical Ind | Non-aqueous electrolyte solutions and secondary cells comprising the same |
| JP2008218326A (en) * | 2007-03-07 | 2008-09-18 | Nec Corp | Electric storage device |
| US8771881B2 (en) | 2008-05-21 | 2014-07-08 | Samsung Sdi Co., Ltd. | Electrolyte for lithium ion secondary battery and lithium ion secondary battery comprising the same |
| US9368834B2 (en) | 2008-05-21 | 2016-06-14 | Samsung Sdi Co., Ltd. | Electrolyte for lithium ion secondary battery and lithium ion secondary battery comprising the same |
| WO2021108995A1 (en) * | 2019-12-03 | 2021-06-10 | 宁德时代新能源科技股份有限公司 | Secondary battery, electrolyte, and device containing secondary battery |
| CN113207318A (en) * | 2019-12-03 | 2021-08-03 | 宁德时代新能源科技股份有限公司 | Secondary battery, electrolyte and device comprising the same |
| US11735775B2 (en) | 2019-12-03 | 2023-08-22 | Contemporary Amperex Technology Co., Limited | Secondary battery, electrolyte, and apparatus comprising the secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2701327B2 (en) | 1998-01-21 |
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