JPH01227356A - Lithium battery - Google Patents
Lithium batteryInfo
- Publication number
- JPH01227356A JPH01227356A JP63051637A JP5163788A JPH01227356A JP H01227356 A JPH01227356 A JP H01227356A JP 63051637 A JP63051637 A JP 63051637A JP 5163788 A JP5163788 A JP 5163788A JP H01227356 A JPH01227356 A JP H01227356A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- active material
- battery
- negative electrode
- electrode active
- 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
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 26
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 239000007773 negative electrode material Substances 0.000 claims abstract description 11
- 239000007774 positive electrode material Substances 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims abstract description 6
- 229910000733 Li alloy Inorganic materials 0.000 claims abstract description 3
- 238000003487 electrochemical reaction Methods 0.000 claims abstract description 3
- 239000001989 lithium alloy Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims abstract 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 2
- 239000011149 active material Substances 0.000 claims description 2
- 239000002001 electrolyte material Substances 0.000 claims description 2
- 229910001416 lithium ion Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 11
- 239000010935 stainless steel Substances 0.000 abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 9
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 8
- 229910012985 LiVO3 Inorganic materials 0.000 abstract description 6
- 239000008188 pellet Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- SPEUIVXLLWOEMJ-UHFFFAOYSA-N 1,1-dimethoxyethane Chemical compound COC(C)OC SPEUIVXLLWOEMJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 4
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 abstract 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 abstract 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 abstract 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 abstract 1
- 239000000463 material Substances 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
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011255 nonaqueous electrolyte Substances 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 229910015013 LiAsF Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-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
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910001914 chlorine tetroxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052720 vanadium 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の産業上利用分野〕
本発明はリチウム電池、さらに詳細には充放電可能なリ
チウム二次電池に関し、特に大きな充放電容量を与える
二元系複酸化物を正極活物質としたリチウム電池に関す
るものである。[Detailed Description of the Invention] [Industrial Application Field of the Invention] The present invention relates to a lithium battery, and more particularly to a rechargeable and dischargeable lithium secondary battery, in which a binary double oxide that provides a particularly large charge and discharge capacity is used as a positive electrode. This relates to a lithium battery as an active material.
リチウム等のアルカリ金属およびその合金を負極活物質
とする非水電解液電池は、負極金属イオンの正極活物質
へのインサーシゴンもしくはインターカレーション反応
によって、その大放電容量と充電可逆性を両立させてい
る。従来からリチウムを負極活物質として用いる二次電
池としては、二酸化マンガンや五酸化バナジウム等のト
ンネル状もしくは層状の結晶質酸化物を正極に用いた電
池が提案されているが、充放電サイクルに伴う構造劣化
が激しくその充放電特性は充分とは言えなかった。Non-aqueous electrolyte batteries that use alkali metals such as lithium and their alloys as negative electrode active materials achieve both large discharge capacity and charge reversibility through insertion or intercalation reactions of negative electrode metal ions into positive electrode active materials. There is. As secondary batteries that use lithium as the negative electrode active material, batteries that use tunnel-shaped or layered crystalline oxides such as manganese dioxide or vanadium pentoxide as the positive electrode have been proposed, but due to the charge-discharge cycle. Structural deterioration was severe and its charge/discharge characteristics were not satisfactory.
そこで、本発明の目的は上記現状の問題点を改良して、
小型で充放電特性に優れた電池特性をもつリチウム電池
を提供することにある。Therefore, the purpose of the present invention is to improve the above-mentioned current problems, and
The object of the present invention is to provide a lithium battery that is small in size and has excellent charge and discharge characteristics.
かかる目的を達成するために、本発明リチウム電池では
、組成式ＬｉＶＣｈで与えられる複酸化物結晶を正極活
物質として含み、リチウムまたはリチウム合金を負極活
物質とし、前記負極活物質に対して化学的に安定であり
、かつリチウムイオンが前記正極活物質あるいは前記負
極活物質と電気化学反応をするための移動を行い得る物
質を電解質物質としたことを特徴としている。In order to achieve this object, the lithium battery of the present invention includes a double oxide crystal given by the composition formula LiVCh as a positive electrode active material, lithium or a lithium alloy as a negative electrode active material, and chemically reacts the negative electrode active material. The present invention is characterized in that the electrolyte material is a material that is stable and allows lithium ions to move for an electrochemical reaction with the positive electrode active material or the negative electrode active material.
本発明をさらに詳しく説明する。The present invention will be explained in more detail.
上述のように本発明においては、正極活物質として、結
晶質のＬｉＶＯ，を用いる。すなわち、本発明では、Ｖ
２Ｏ，にＬｉ、Ｏを１：１のモル比で添加した二元系酸
化物を正極活物質として用いることにより、従来のリチ
ウム電池より充放電容量が大きく、サイクル性に優れた
リチウム電池を構成できることを確かめ、その認識の下
に本発明を完成した。As described above, in the present invention, crystalline LiVO is used as the positive electrode active material. That is, in the present invention, V
By using a binary oxide in which Li and O are added to 2O, at a molar ratio of 1:1, as the positive electrode active material, a lithium battery with greater charge/discharge capacity and superior cycle performance than conventional lithium batteries is constructed. The present invention was completed based on this knowledge.
この正極活物質を用いて正極を形成するには、ＬｉＶＯ
３化合物粉末とポリテトラフルオロエチレンごとき結着
剤粉末との混合物をニッケル、ステンレス等の支持体上
に圧着成形する。あるいは、かかる混合物質粉末に導電
性を付与するためアセチレンブラックのような導電性粉
末を混合し、これに更にポリテトラフルオロエチレンの
ような結着剤粉末を所要に応じて加え、この混合物を金
属容器に入れ、あるいは前述の混合物をニッケル、ステ
ンレス等の支持体に圧着成形する等の手段によって形成
される。To form a positive electrode using this positive electrode active material, LiVO
A mixture of three compound powders and a binder powder such as polytetrafluoroethylene is pressure-molded onto a support such as nickel or stainless steel. Alternatively, a conductive powder such as acetylene black is mixed in order to impart conductivity to the mixed material powder, and a binder powder such as polytetrafluoroethylene is further added as required, and this mixture is mixed with a conductive powder such as acetylene black. It is formed by placing the mixture in a container or by pressure-molding the above-mentioned mixture onto a support such as nickel or stainless steel.
上述のＬｉＶＯ３結晶は下記のような電池反応をすると
考えられる。The LiVO3 crystal described above is thought to undergo the following battery reaction.
すなわちＬｉＶＯ３１分子当たり、ＩＬｉ原子と反応し
たときの発電容量は２５３Ａｈ／ｋｇである。そして実
施例の第４図より１■終止で、４００Ａｈ／ｋｇ以上の
放電容量が得られているので、ＬｉＶＯ３はＶが５価よ
り３価に還元されることによって２原子Ｌｉと反応して
いると考えられる。すなわち電池反応は、
ＬｉＶＯ，＋２Ｌｉ□→Ｌｉ３ＶＯ３
であると考えられる。That is, the power generation capacity when one molecule of LiVO3 reacts with an ILi atom is 253 Ah/kg. As shown in FIG. 4 of the example, a discharge capacity of 400 Ah/kg or more is obtained in 1■ termination, so LiVO3 reacts with diatomic Li by reducing V from pentavalent to trivalent. it is conceivable that. That is, the battery reaction is considered to be as follows: LiVO, +2Li□→Li3VO3.
一方、第５図より劣化なく安定して可逆反応を行える容
量は２００Ａｈ／ｋｇ前後であるため、可逆反応は１原
子Ｌｉと起こしていると考えられＬｉＶＯ，ｆＬｉ で
＝立 Ｌｉ、ＶＯ３負極活物質であるリチウムは一般の
リチウム電池のそれと同様にシート状として、またはそ
のシートをニッケル、ステンレス等の導電体網に圧着し
て負極として形成される。また、負極活物質としてはリ
チウム以外にマグネシウム、カルシウム、ナトリウム等
、従来公知のものが使用できる。On the other hand, as shown in Fig. 5, the capacity for stable reversible reactions without deterioration is around 200 Ah/kg, so it is thought that the reversible reactions occur with one atom of Li, and LiVO, fLi = vertical Li, VO3 negative electrode active material Lithium, which is lithium, is formed in the form of a sheet, similar to that of general lithium batteries, or the sheet is pressed onto a conductor network of nickel, stainless steel, etc. to form a negative electrode. Further, as the negative electrode active material, conventionally known materials such as magnesium, calcium, sodium, etc. can be used in addition to lithium.
電解質としては、例えばジメトキシエタン、２−メチル
テトラヒドロフラン、エチレンカーボネート、メチルホ
ルメート、ジメチルスルホキシド、プロピレンカーボネ
ート、アセトニトリル、ブチロラクトン、ジメチルフォ
ルムアミド等の有機溶媒に、Ｌ １ＡｓＦ、 、Ｌ ｉ
ＢＦ、 、Ｌ ｉ ＰＦ、、ＬｉＡｌＣｌ！、４、Ｌｉ
ＣｌＯ４等のルイス酸を溶解した非水電解質溶液が使用
できる。As the electrolyte, for example, L 1 AsF, , Li
BF, ,Li PF, ,LiAlCl! ,4,Li
A non-aqueous electrolyte solution in which a Lewis acid such as ClO4 is dissolved can be used.
さらに、セパレータ、構造材料（電池ケース等）等の他
の要素についても従来公知の各種材料が使用でき、特に
制限はない。Furthermore, various conventionally known materials can be used for other elements such as separators, structural materials (battery cases, etc.), and there are no particular limitations.
以下、実施例によって本発明の方法を更に具体的に説明
するが、本発明はこれらによりなんら制限されるもので
はない。なお、実施例において電池の作製および測定は
アルゴン雰囲気下のドライボックス中で行った。Hereinafter, the method of the present invention will be explained in more detail with reference to Examples, but the present invention is not limited by these in any way. In addition, in the examples, battery production and measurements were performed in a dry box under an argon atmosphere.
〔実施例１〕
第１図は本発明による電池の一具体例であるコイン型電
池の断面図であり、図中１はステンレス製封口板、２は
ポリプロピレン製ガスケット、３はステンレス製正極ケ
ース、４はリチウム負極、５はポリプロピレン製微孔製
セパレータ、６は正極合剤ペレットを示す。[Example 1] Fig. 1 is a sectional view of a coin-type battery which is a specific example of the battery according to the present invention, in which 1 is a stainless steel sealing plate, 2 is a polypropylene gasket, 3 is a stainless steel positive electrode case, 4 is a lithium negative electrode, 5 is a polypropylene microporous separator, and 6 is a positive electrode mixture pellet.
正極活物質には、■２０ＳをＬｉ、ＣＯ，と共に１：１
のモル組成で混合焼成して得た二元系複酸化物結晶粉末
を用いた。反応温度は第２図に示すＬ ｉＺ Ｏｖ、Ｏ
３系の相図からＬ ｉ ｚ Ｏ・Ｖ２０５の融点である
５６０°Ｃより低温で固相反応させた。For the positive electrode active material, ■ 20S was mixed with Li and CO in a 1:1 ratio.
A binary double oxide crystal powder obtained by mixing and firing with a molar composition of was used. The reaction temperature is L iZ Ov, O shown in Figure 2.
Based on the phase diagram of the three systems, the solid phase reaction was performed at a temperature lower than 560°C, which is the melting point of L iz O·V205.
得られた灰白色の粉末のＸ線回折図形を第３図に示す。The X-ray diffraction pattern of the obtained gray-white powder is shown in FIG.
いずれのピークもＬ ｉＶ Ｏ３で指数付けされた。得
られたＬ ｉ ＶＯ，結晶を導電剤（アセチレンブラッ
ク粉末）、結着剤（ポリテトラフルオロエチレン）と共
に、７０ ： ２５ ： ５の重量比で混合の上、ロー
ル成形し、正極合剤ペレット６（Ｊ￥さ０．５ｍｍ、直
径１７踵、２００ｍｇ／ｃｅｌｌ）とした。まず、封口
板１上に金属リチウム負極４を加圧配置したものをガス
ケット６をこの順序に配置し、電解液としてプロピレン
カーボネート（ＰＣ）と２−ジメトキシエタン（ＤＭＥ
）の等容積混合溶媒にＬｉＣｆ０ｎを溶解させた１規定
溶液をそれぞれ適責注入して含浸させた後に、正極ケー
ス３を被せてかしめることにより、厚さ２閣、直径２３
ｍのコイン型電池を作製した。Both peaks were indexed with L iV O3. The obtained LiVO crystals were mixed with a conductive agent (acetylene black powder) and a binder (polytetrafluoroethylene) at a weight ratio of 70:25:5, and then roll-formed to form positive electrode mixture pellets 6. (J¥ length 0.5 mm, diameter 17 heel, 200 mg/cell). First, a metal lithium negative electrode 4 is placed under pressure on a sealing plate 1, a gasket 6 is placed in this order, and propylene carbonate (PC) and 2-dimethoxyethane (DME) are used as electrolytes.
), a 1N solution in which LiCf0n is dissolved in an equal volume mixed solvent is injected and impregnated, and then the positive electrode case 3 is covered and caulked to form a material with a thickness of 2 mm and a diameter of 23 mm.
A coin-type battery of 1.0 m was manufactured.
このようにして作製した電池の０．５ｓ＋Ａ／ａＪの充
電電流密度で各終止電圧までの平均放電電圧、放電容量
、放電エネルギ密度を第１表に示す。Table 1 shows the average discharge voltage, discharge capacity, and discharge energy density of the batteries thus produced up to each final voltage at a charging current density of 0.5 s+A/aJ.
ＬｉＶＯ３はＶ、Ｏ，等に比べ、放電電圧が低いため２
■終止の放電容量は決して太き（ないが、１．５■系正
極としては有望な材料であることがわかる。０． ５ｍ
八へ−の放電電流密度での放電プロファイルを第４図に
示す。Since LiVO3 has a lower discharge voltage than V, O, etc.
■Although the final discharge capacity is not large, it is clear that it is a promising material as a 1.5■ system positive electrode.0.5m
A discharge profile at a discharge current density of 8 is shown in FIG.
〔実施例２〕
電解液としてエチレンカーボネートと２−メチルテトラ
ヒドロフランの等容積混合溶媒にＬｉＡｓＦ。[Example 2] LiAsF is used as an electrolytic solution in an equal volume mixed solvent of ethylene carbonate and 2-methyltetrahydrofuran.
を溶解させた１、５規定溶液、工゛チレンカーボネ−ト
と２−ジメトキシエタンの等容積混合溶媒にＬ １Ａｓ
Ｆ、を溶解させた１、５規定溶液、プロピレンカーボネ
ートと２−ジメトキシエタンの等容積混合溶媒にＬ ｉ
Ｃｊ！ Ｏａを溶解させた１規定溶液の３種を用い、そ
れ以外は実施例１と同様にしてコイン型リチウム電池を
作製した。この３種のコイン型電池について、０．５ｍ
Ａ／ｃｄの充放電電流密度で各々２−３．５Ｖ、１．６
−３．８Ｖ、１−３．５Ｖの電圧規制充放電試験を行っ
た。各々のサイクル挙動は第５図に示す。この図から明
らかなようにＬ ｉ ＶＯ，・ＰｚＯｓは放電過電圧が
小さ（、Ｌ ｉ Ｖ Ｏｓ １ モＢｖ当たり０．８Ｌ
ｉ程度（２００Ａｈ／ ｋｇ）の可逆組成域をもち、ま
た、電圧規制範囲を拡大してもサイクルによる容量低下
が少ないことがわかる。1.5N solution of L 1As dissolved in an equal volume mixed solvent of ethylene carbonate and 2-dimethoxyethane.
Li
Cj! A coin-type lithium battery was produced in the same manner as in Example 1 except for using three kinds of 1N solutions in which Oa was dissolved. For these three types of coin type batteries, 0.5m
2-3.5V, 1.6 respectively at charge/discharge current density of A/cd
-3.8V and 1-3.5V voltage regulation charge/discharge tests were conducted. Each cycle behavior is shown in FIG. As is clear from this figure, L i VO,・PzOs has a small discharge overvoltage (0.8 L per 1 moBv of L i VO,・PzOs
It has a reversible composition range of about i (200Ah/kg), and it can be seen that even if the voltage regulation range is expanded, the capacity decrease due to cycles is small.
以上説明したように、本発明によれば、可逆容量の大き
な小型高エネルギ密度のリチウム電池を構成することが
でき、本発明電池はコイン型電池等種々の分野に利用で
きるという利点を有する。As described above, according to the present invention, it is possible to construct a small, high-energy density lithium battery with a large reversible capacity, and the battery of the present invention has the advantage that it can be used in various fields such as coin-type batteries.
第１図は本発明の一実施例であるコイン電池の構成例を
示す断面図、第２図は本発明のＬ ｉ ＶＯ。
の合成に用いたＬ ｉｚ ＯＶｚ Ｏｓ系の相図、第３
図は本発明の製造方法により得られた二元系バナジウム
酸化物のＸ線回折図形、゛第４図は本発明の一実施例に
おける電池の充電特性をしめず特性図、第５図は本発明
の一実施例における電池の充放電特性を示す特性図であ
る。
１・・・ステンレス製封口仮、２・・・ポリプロピレン
製ガスケット、３・・・ステンレス製正極ケース、４・
・・リチウム負極、５・・・ポリプロピレン製セパレー
タ、６・・・正極合剤ペレット。
出願人代理人 雨 宮 正 季第１図
（正極合剤ベレット）
第２図FIG. 1 is a sectional view showing a configuration example of a coin battery according to an embodiment of the present invention, and FIG. 2 is a Li VO battery according to the present invention. Phase diagram of the L iz OVz Os system used for the synthesis of
The figure shows an X-ray diffraction pattern of a binary vanadium oxide obtained by the production method of the present invention. FIG. 3 is a characteristic diagram showing the charging and discharging characteristics of a battery in one embodiment of the invention. 1... Stainless steel temporary sealing, 2... Polypropylene gasket, 3... Stainless steel positive electrode case, 4...
... Lithium negative electrode, 5 ... Polypropylene separator, 6 ... Positive electrode mixture pellet. Applicant's agent Tadashi Amemiya Figure 1 (Cathode mixture pellet) Figure 2
Claims (1)
正極活物質として含み、リチウムまたはリチウム合金を
負極活物質とし、前記負極活物質に対して化学的に安定
であり、かつリチウムイオンが前記正極活物質あるいは
前記負極活物質と電気化学反応をするための移動を行い
得る物質を電解質物質としたことを特徴とするリチウム
電池。(1) Contains a double oxide crystal given by the composition formula LiVO_3 as a positive electrode active material, lithium or a lithium alloy as a negative electrode active material, is chemically stable with respect to the negative electrode active material, and lithium ions are contained in the positive electrode A lithium battery characterized in that an electrolyte material is a substance that can move to perform an electrochemical reaction with the active material or the negative electrode active material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63051637A JP2559054B2 (en) | 1988-03-07 | 1988-03-07 | Lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63051637A JP2559054B2 (en) | 1988-03-07 | 1988-03-07 | Lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01227356A true JPH01227356A (en) | 1989-09-11 |
| JP2559054B2 JP2559054B2 (en) | 1996-11-27 |
Family
ID=12892363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63051637A Expired - Lifetime JP2559054B2 (en) | 1988-03-07 | 1988-03-07 | Lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2559054B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991001572A1 (en) * | 1989-07-20 | 1991-02-07 | Dowty Electronic Components Limited | Battery comprising lithium vanadium oxide as active material |
-
1988
- 1988-03-07 JP JP63051637A patent/JP2559054B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991001572A1 (en) * | 1989-07-20 | 1991-02-07 | Dowty Electronic Components Limited | Battery comprising lithium vanadium oxide as active material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2559054B2 (en) | 1996-11-27 |
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