JPH06111818A - Carbon negative electrode for nonaqueous electrolyte secondary battery - Google Patents
Carbon negative electrode for nonaqueous electrolyte secondary batteryInfo
- Publication number
- JPH06111818A JPH06111818A JP4258707A JP25870792A JPH06111818A JP H06111818 A JPH06111818 A JP H06111818A JP 4258707 A JP4258707 A JP 4258707A JP 25870792 A JP25870792 A JP 25870792A JP H06111818 A JPH06111818 A JP H06111818A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- carbon
- graphitized carbon
- secondary battery
- electrolyte secondary
- 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
Classifications
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- 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
【０００１】[0001]
【産業上の利用分野】本発明は非水電解液二次電池に関
するものであり、特にその負極の改良に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-aqueous electrolyte secondary battery, and more particularly to improvement of its negative electrode.
【０００２】[0002]
【従来の技術】近年、コードレス電子機器はその普及に
伴い小形軽量化、使用時間の延長が強く求められてい
る。特にそれら機器の電源である電池に対しては上記要
求を満足させるためにより一層の高エネルギ密度化が求
められている。このような要求に応えるため、リチウム
を活物質とした非水電解液二次電池が提案されている。2. Description of the Related Art In recent years, with the spread of cordless electronic devices, there is a strong demand for downsizing and weight reduction and extension of usage time. In particular, for batteries which are the power source of such devices, further higher energy density is required to satisfy the above requirements. In order to meet such a demand, a non-aqueous electrolyte secondary battery using lithium as an active material has been proposed.
【０００３】この種の電池は特に正極にコバルト、ニッ
ケル、マンガン、バナジウムなどの層状構造を有する金
属酸化物を用い、リチウムイオンのインタカレーション
によって電極反応を起こさせる場合は複雑な化学反応を
伴わないため充放電サイクル寿命が向上する利点を有
し、また、リチウム金属やリチウム合金を負極に用いる
ため、高起電力が得られるうえに、軽量であり、高エネ
ルギ密度化し易い利点を有している。しかし、リチウム
金属は充放電によってデンドライトを生成し、電池の内
部短絡の原因を作ったり、電解液との副反応などの不可
逆的変化によりサイクル寿命が短いという欠点を有して
いる。リチウム合金は上記欠点は緩和されるものの取り
出せる電気量が少ないという欠点を有している。This type of battery uses a metal oxide having a layered structure such as cobalt, nickel, manganese, and vanadium for the positive electrode, and involves a complicated chemical reaction when an electrode reaction is caused by intercalation of lithium ions. Since it has no charge / discharge cycle life, it also has the advantage of using lithium metal or a lithium alloy for the negative electrode, which provides high electromotive force, is lightweight, and facilitates high energy density. There is. However, lithium metal has a drawback that it produces dendrites by charge and discharge, causes internal short circuit of the battery, and has a short cycle life due to irreversible changes such as side reaction with the electrolyte. Lithium alloys alleviate the above drawbacks, but have the drawback that the amount of electricity that can be taken out is small.
【０００４】一方、リチウムイオンをインタカレートし
た黒鉛層間化合物や黒鉛化度を高めた炭素材料を負極に
する提案がなされている。リチウム金属を用いないため
安全性に優れ、比較的リチウムイオンのインタカレート
量が多く、サイクル特性も良好なものが見出されてい
る。On the other hand, it has been proposed to use a graphite intercalation compound in which lithium ions are intercalated or a carbon material having a high degree of graphitization as a negative electrode. It has been found that since lithium metal is not used, it is excellent in safety, has a relatively large amount of lithium ion intercalates, and has good cycle characteristics.
【０００５】[0005]
【発明が解決しようとする課題】上記炭素負極として、
特開平３−２５２０５３号公報には石油ピッチを炭素化
し３９０メッシュ以下の粒子として負極に用いることが
開示されている。リチウムイオンのデインタカレートに
よって取り出せる電気量は炭素材１ｇに対して３００ｍ
Ａｈ以上と高容量であるが、極めて低い電流密度での動
作であり、電子機器の駆動電源として実用性の低いもの
である。また、特開平４−１１５４５７号公報には易黒
鉛化性の球状粒子からなる黒鉛質材料を負極に用いるこ
とが開示されている。上記同様高容量であり、サイクル
特性にも優れているが、５時間率程度の放電電流下での
動作であり、やはり電子機器の駆動電源としては実用性
に乏しいものである。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
JP-A-3-252053 discloses that petroleum pitch is carbonized and used as a negative electrode as particles of 390 mesh or less. The amount of electricity that can be extracted by deintercalating lithium ions is 300 m for 1 g of carbon material.
Although it has a high capacity of Ah or more, it operates at an extremely low current density and is not practical as a drive power source for electronic devices. Further, JP-A-4-115457 discloses the use of a graphite material composed of graphitizable spherical particles for the negative electrode. Although it has a high capacity and excellent cycle characteristics as described above, it operates under a discharge current of about 5 hours and is also not practical as a drive power source for electronic devices.
【０００６】本発明の目的は上記問題点を解決するもの
で、高電圧で、１時間率程度の放電においても高容量を
有し、サイクル特性に優れた非水電解液二次電池用炭素
負極を提供することにある。An object of the present invention is to solve the above-mentioned problems, and it has a high capacity even at a high voltage of about 1 hour discharge and has excellent cycle characteristics, and a carbon negative electrode for a non-aqueous electrolyte secondary battery. To provide.
【０００７】[0007]
【課題を解決するための手段】本発明は負極に球状の黒
鉛化炭素粒子と黒鉛化炭素短繊維を用いることによっ
て、上記目的を達成したものである。黒鉛化炭素は結晶
化が進んだ比抵抗の小さいものが好ましく、炭素含有量
が９９．５％以上であるか、真密度が２．０ｇ／ｃｍ3
以上であるか、Ｘ線回折法により求めた（００２）面の
面間隔（ｄ００２）が３．３７Ａ°以下である。球状の
黒鉛化炭素粒子の粒径は１〜５０μｍが好適であり、ま
た、黒鉛化炭素短繊維のアスペクト比は１０〜１５０が
好適である。該繊維の直径は０．３〜１μｍ、長さは５
〜１００μｍ程度のものを用いることが出来る。該繊維
の含有量は５〜３０ｗｔ％にすることが好ましい。この
範囲以下では１時間率程度の放電で容量が低下し、この
範囲以上では炭素材の充填密度が低下するので、一定寸
法の負極では容量が低下する。なお、球状の黒鉛化炭素
粒子はラメラ構造を有するものがより好ましく、黒鉛化
炭素短繊維は易黒鉛化性炭素である気相成長炭素繊維の
熱処理物が好ましく、更に繊維軸に同心円状に芳香環平
面が配列した構造を有するものがより好ましい。The present invention has achieved the above object by using spherical graphitized carbon particles and graphitized carbon short fibers for the negative electrode. The graphitized carbon is preferably one that has been crystallized and has a small specific resistance, and has a carbon content of 99.5% or more or a true density of 2.0 g / cm 3.
It is above, or the interplanar spacing (d002) of the (002) plane obtained by the X-ray diffraction method is 3.37 A ° or less. The particle diameter of the spherical graphitized carbon particles is preferably 1 to 50 μm, and the aspect ratio of the graphitized carbon short fibers is preferably 10 to 150. The fiber has a diameter of 0.3 to 1 μm and a length of 5
A material having a thickness of about 100 μm can be used. The content of the fiber is preferably 5 to 30 wt%. If it is less than this range, the capacity will be reduced by discharging for about 1 hour, and if it is more than this range, the packing density of the carbonaceous material will be decreased, so that the capacity of the negative electrode of a certain size will be decreased. Incidentally, the spherical graphitized carbon particles are more preferably those having a lamellar structure, the graphitized carbon short fiber is preferably a heat-treated product of vapor-grown carbon fiber which is easily graphitizable carbon, and further the fiber axis is concentrically aromatic. The one having a structure in which the ring planes are arranged is more preferable.
【０００８】非水電解液はとくに限定されず従来より公
知のものが使用できるが、溶媒としてはエチレンカーボ
ネイトに代表されるカーボネイト類とエチレングリコー
ル・ジメチルエーテルに代表されるエーテル類の単独ま
たは混合物が好適に用いられる。溶質は過塩素酸リチウ
ム、４フッ化ホウ酸リチウム、６フッ化リン酸リチウム
などが好適に用いられる。The non-aqueous electrolyte is not particularly limited, and conventionally known ones can be used, but as the solvent, a carbonate represented by ethylene carbonate and an ether represented by ethylene glycol / dimethyl ether are used alone or in a mixture. Used for. Lithium perchlorate, lithium tetrafluoroborate, lithium hexafluorophosphate and the like are preferably used as the solute.
【０００９】[0009]
【作用】本発明の炭素負極の構成を図１に示す。球状の
黒鉛化炭素粒子Ａが密に集合した中に黒鉛化炭素短繊維
Ｂがランダムな配向性を持って存在している。球状の黒
鉛化炭素粒子Ａはその形状から充填密度を上げることが
出来、一定寸法の電極内に仕込める黒鉛化炭素の量を多
く出来るので高容量化が容易になる。また、本発明の黒
鉛化炭素は黒鉛化度が高く、比抵抗が小さいうえに、黒
鉛化炭素短繊維Ｂを適当量配合するので、粒子間の接触
による導通の他に短繊維による電極厚み方向及び幅方向
の導電性が大幅に改善され、１時間率程度の放電によっ
ても高容量を得ることが出来る。更に、該短繊維の配合
は電極強度を向上させ、黒鉛層間にリチウムイオンがイ
ンタカレート及びデインタカレートされる際の層間距離
の拡大縮小に伴う電極の膨張収縮に伴う炭素材の脱落や
集電基体からの剥離などの不具合を防止し、サイクル寿
命を延長することが出来る。正極とセパレータと負極と
を重ねて渦巻状に捲回する電池においては炭素材の脱落
や集電基体からの剥離などの製造工程での不具合を防止
する効果も合わせ持つ。The structure of the carbon negative electrode of the present invention is shown in FIG. The graphitized carbon short fibers B are present with random orientation in the densely packed spherical graphitized carbon particles A. The packing density of the spherical graphitized carbon particles A can be increased due to its shape, and the amount of graphitized carbon that can be charged in an electrode having a fixed size can be increased, so that the capacity can be easily increased. Further, the graphitized carbon of the present invention has a high graphitization degree and a small specific resistance, and since the graphitized carbon short fibers B are blended in an appropriate amount, in addition to the conduction due to the contact between particles, the electrode thickness direction by the short fibers is obtained. In addition, the conductivity in the width direction is significantly improved, and a high capacity can be obtained even by discharging for about 1 hour. Furthermore, the blending of the short fibers improves the electrode strength, and the carbon material is removed or collected due to the expansion and contraction of the electrodes due to the expansion and contraction of the interlayer distance when lithium ions are intercalated and deintercalated between the graphite layers. It is possible to prevent defects such as peeling from the electric substrate and extend the cycle life. In a battery in which a positive electrode, a separator, and a negative electrode are stacked and wound in a spiral shape, it also has an effect of preventing a defect in the manufacturing process such as dropping of the carbon material or separation from the current collecting substrate.
【００１０】[0010]
【実施例】本発明を実施例により更に詳細に説明する。 実施例１ 黒鉛化炭素負極は次のようにして作製した。球状の黒鉛
化炭素粒子としてメソカーボンマイクロビーズ（粒径１
〜５０μｍ，炭素含有量９９．９％，真密度２．１ｇ／
ｃｍ3）と黒鉛化炭素短繊維として２９００℃で熱処理
した気相成長炭素繊維（長さ７〜１００μｍ，直径０．
７μｍ，ｄ００２＝３．３６Ａ°，炭素含有量９９．７
％，真密度２．０ｇ／ｃｍ3）を種々の割合で混合した
もの１００重量部と固形分として１０重量部のポリテト
ラフロロエチレン結着剤の水性懸濁液とを混練してペー
スト状にした。このペーストを銅メッシュに塗着し、乾
燥、加圧成形によって直径１５．５ｍｍ，厚み０．２ｍ
ｍのペレットとした。EXAMPLES The present invention will be described in more detail by way of examples. Example 1 A graphitized carbon negative electrode was produced as follows. Mesocarbon microbeads (particle size 1
~ 50 μm, carbon content 99.9%, true density 2.1 g /
cm 3 ), and vapor-grown carbon fibers (length 7 to 100 μm, diameter 0.
7 μm, d002 = 3.36 A °, carbon content 99.7
%, True density of 2.0 g / cm 3 ) in various proportions, and 100 parts by weight of the mixture and 10 parts by weight of solid content of an aqueous suspension of polytetrafluoroethylene binder are kneaded to form a paste. did. This paste is applied to a copper mesh, dried and pressure-molded to have a diameter of 15.5 mm and a thickness of 0.2 m.
m pellets.
【００１１】試験は図２に示すコイン形セル（直径２０
ｍｍ，厚み１．６ｍｍ）で行った。上記黒鉛化炭素負極
１と対極としてのリチウム金属２をポリプロピレン不織
布（厚み１５０μｍ）３とポリプロピレン微多孔フィル
ム（厚み２５μｍ）４をラミネートしたセパレータを介
して対向させ、非水電解液５としてエチレンカーボネイ
トとエチレングリコール・ジメチルエーテル混合溶媒
（１：１容積比）に１ｍｏｌ／ｌの６フッ化リン酸リチ
ウムを溶解させたものを注液し、これらをステンレス製
容器６に収容し、ガスケット７を介して封口した。The test was carried out using a coin-shaped cell (diameter 20
mm, thickness 1.6 mm). The graphitized carbon negative electrode 1 and the lithium metal 2 as a counter electrode are opposed to each other through a separator formed by laminating a polypropylene nonwoven fabric (thickness 150 μm) 3 and a polypropylene microporous film (thickness 25 μm) 4, and ethylene carbonate as a non-aqueous electrolyte 5. A solution prepared by dissolving 1 mol / l of lithium hexafluorophosphate in an ethylene glycol / dimethyl ether mixed solvent (1: 1 volume ratio) was poured, and these were housed in a stainless steel container 6 and sealed via a gasket 7. did.
【００１２】充放電試験は上記試験セルに対して１０ｍ
Ａを通電し、放電の終止電圧は１Ｖとした。表１に黒鉛
化炭素短繊維の含有量、黒鉛化炭素の総仕込み量、充放
電サイクル５サイクル目の放電容量をそれぞれ示した。
なお、比較として黒鉛化炭素短繊維を含まない負極も同
様に作製し、その結果も合わせて表１に示した。この表
から明らかなように、黒鉛化炭素短繊維を含有すること
によって放電容量は増加する。特に黒鉛化炭素短繊維の
含有量が５〜３０重量％の範囲で放電容量が大きくなっ
ている。含有量が少ない領域では炭素１ｇ当たりで取り
出せる容量が小さく、含有量の多い領域では黒鉛化炭素
の総仕込み量が少なく、それぞれ放電容量が減少してい
る。また、放電容量から見て通電電流はほぼ１時間率に
相当し、従来にない高率放電で高い容量が得られてい
る。The charging / discharging test was carried out at 10 m with respect to the above test cell.
A was energized and the final voltage of discharge was set to 1V. Table 1 shows the content of graphitized carbon short fibers, the total amount of graphitized carbon charged, and the discharge capacity at the fifth charge / discharge cycle.
For comparison, a negative electrode containing no graphitized carbon short fiber was similarly prepared, and the results are also shown in Table 1. As is clear from this table, the discharge capacity is increased by including the graphitized carbon short fiber. In particular, the discharge capacity is large when the content of the graphitized carbon short fibers is in the range of 5 to 30% by weight. In the region where the content is small, the capacity that can be taken out per 1 g of carbon is small, and in the region where the content is large, the total charging amount of graphitized carbon is small, and the discharge capacity is reduced. Further, the energizing current corresponds to almost one hour rate in view of the discharge capacity, and a high capacity is obtained by a high rate discharge which has never been seen before.
【００１３】[0013]
【表１】 [Table 1]
【００１４】更に、黒鉛化炭素短繊維含有量２０ｗｔ％
の試験セルについて充放電を繰返したところ、８０サイ
クルで５サイクル目容量の２０％低下した。アルゴン雰
囲気中でセルを解体し、対極のリチウム金属を新しいも
のに取り換えた以外はそのままにしてセルを再構築し、
充放電試験を続行したところ、ほぼ元の容量を維持し
た。それ以降容量が低下する毎に同様の処置をして５０
０サイクルまで試験したが、５００サイクル目の放電容
量は１４．１ｍＡｈと容量の低下が少なく、サイクル特
性に優れたものであった。Furthermore, the content of graphitized carbon short fiber is 20 wt%
When the charge and discharge were repeated for the test cell of No. 3, the capacity decreased by 20% of the capacity at the 5th cycle at 80 cycles. The cell was disassembled in an argon atmosphere, and the cell was rebuilt except for replacing the lithium metal of the counter electrode with a new one,
When the charge / discharge test was continued, almost the original capacity was maintained. After that, the same procedure is performed every time the capacity decreases 50
The test was carried out up to 0 cycles, but the discharge capacity at the 500th cycle was 14.1 mAh, showing a small decrease in capacity and excellent cycle characteristics.
【００１５】比較例１ コールタールピッチを１５００℃で熱処理したものをボ
ールミルで粉砕し、平均粒径１０μｍ、ｄ００２＝３．
４１Ａ°の黒鉛化炭素粉末を得た。これを実施例１と同
様の方法で負極とし、同様の試験セルを作製し、同様の
試験を実施した。５サイクル目の放電容量は７．２ｍＡ
ｈであった。通電電流を１ｍＡにしたところ放電容量は
１０．５ｍＡｈであった。黒鉛構造が十分に発達してい
ないため比抵抗が大きく、高率放電では分極が大とな
り、取り出せる容量が少なくなったものと考えられる。Comparative Example 1 Coal tar pitch heat-treated at 1500 ° C. was ground with a ball mill to give an average particle size of 10 μm and d002 = 3.
41 A ° graphitized carbon powder was obtained. This was used as a negative electrode in the same manner as in Example 1, a similar test cell was prepared, and a similar test was performed. The discharge capacity at the 5th cycle is 7.2 mA
It was h. When the applied current was 1 mA, the discharge capacity was 10.5 mAh. It is considered that the graphite structure is not sufficiently developed, so that the specific resistance is large, the polarization becomes large at the high rate discharge, and the capacity that can be taken out becomes small.
【００１６】[0016]
【発明の効果】上述したように、本発明の非水電解液二
次電池用炭素負極は形状の異なる黒鉛化炭素を用いるこ
とによって、容量に関係する充填性と高率放電特性に関
係する導電性を改善し、１時間率程度の実用的な放電に
おいて高容量であり、かつサイクル寿命の長いものであ
る。As described above, the carbon negative electrode for a non-aqueous electrolyte secondary battery of the present invention uses the graphitized carbon having different shapes, so that the filling property related to the capacity and the conductivity related to the high rate discharge property are achieved. Characteristics, has a high capacity in a practical discharge of about 1 hour, and has a long cycle life.
【図１】本発明の炭素負極の模式的構造を示す図であ
る。FIG. 1 is a diagram showing a schematic structure of a carbon negative electrode of the present invention.
【図２】試験セルの断面図である。FIG. 2 is a cross-sectional view of a test cell.
Ａ…球状の黒鉛化炭素粒子、Ｂ…黒鉛化炭素短繊維、１
…炭素負極、２…対極のリチウム金属、３…ポリプロピ
レン不織布、４…ポリプロピレン微多孔フィルム、５…
非水電解液、６…ステンレス容器、７…ガスケットA ... Spherical graphitized carbon particles, B ... Graphitized carbon short fiber, 1
... Carbon negative electrode, 2 ... Counter electrode lithium metal, 3 ... Polypropylene non-woven fabric, 4 ... Polypropylene microporous film, 5 ...
Non-aqueous electrolyte, 6 ... Stainless steel container, 7 ... Gasket
Claims (4)
を吸蔵放出可能な炭素負極とを備えた非水電解液二次電
池において、上記負極が球状の黒鉛化炭素粒子と黒鉛化
炭素短繊維とからなることを特徴とする非水電解液二次
電池用炭素負極。1. A non-aqueous electrolyte secondary battery comprising a positive electrode, a lithium-containing non-aqueous electrolyte, and a carbon negative electrode capable of inserting and extracting lithium, wherein the negative electrode is spherical graphitized carbon particles and graphitized carbon short fibers. A carbon negative electrode for a non-aqueous electrolyte secondary battery, comprising:
か、真密度が２．０ｇ／ｃｍ3以上か、Ｘ線回折法によ
り求めた（００２）面の面間隔が３．３７Ａ°以下のい
ずれか一つ以上を満足する請求項１記載の非水電解液二
次電池用炭素負極。2. The graphitized carbon has a carbon content of 99.5% or more, a true density of 2.0 g / cm 3 or more, and a (002) plane spacing of 3.37 A determined by an X-ray diffraction method. The carbon negative electrode for a non-aqueous electrolyte secondary battery according to claim 1, which satisfies any one or more of the following.
ｍであり、黒鉛化炭素短繊維のアスペクト比が１０〜１
５０である請求項１記載の非水電解液二次電池用炭素負
極。3. The spherical graphitized carbon particles have a particle size of 1 to 50 μm.
m, and the aspect ratio of the graphitized carbon short fibers is 10 to 1
50. The carbon negative electrode for a non-aqueous electrolyte secondary battery according to claim 1.
量が５〜３０重量％である請求項１記載の非水電解液二
次電池用炭素負極。4. The carbon negative electrode for a non-aqueous electrolyte secondary battery according to claim 1, wherein the content of the graphitized short carbon fibers in the carbon negative electrode is 5 to 30% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25870792A JP3216661B2 (en) | 1992-09-29 | 1992-09-29 | Non-aqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25870792A JP3216661B2 (en) | 1992-09-29 | 1992-09-29 | Non-aqueous electrolyte secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06111818A true JPH06111818A (en) | 1994-04-22 |
| JP3216661B2 JP3216661B2 (en) | 2001-10-09 |
Family
ID=17323983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25870792A Expired - Fee Related JP3216661B2 (en) | 1992-09-29 | 1992-09-29 | Non-aqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3216661B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0776055A1 (en) | 1995-11-24 | 1997-05-28 | PETOCA, Ltd | Negative electrode material for use in lithium-ion secondary battery and process for producing the same |
| JP2001015170A (en) * | 1999-06-29 | 2001-01-19 | Sony Corp | Nonaqueous electrolyte battery |
| JP2001126733A (en) * | 1999-10-27 | 2001-05-11 | Sony Corp | Nonaqueous electrolytic material |
| JP2002110250A (en) * | 2000-09-27 | 2002-04-12 | At Battery:Kk | Non-aqueous electrolyte secondary battery |
| US6852449B2 (en) | 2002-08-29 | 2005-02-08 | Quallion Llc | Negative electrode including a carbonaceous material for a nonaqueous battery |
| US6998192B1 (en) | 2002-08-29 | 2006-02-14 | Quallion Llc | Negative electrode for a nonaqueous battery |
| US7174207B2 (en) | 2004-09-23 | 2007-02-06 | Quallion Llc | Implantable defibrillator having reduced battery volume |
| KR100837648B1 (en) * | 2004-03-31 | 2008-06-13 | 히다치 막셀 가부시키가이샤 | Non-aqueous secondary battery and electronic apparatus containing the same |
| JP2009059713A (en) * | 2008-11-11 | 2009-03-19 | Mitsubishi Materials Corp | Negative electrode material, negative electrode using the same, and lithium ion battery and lithium polymer battery using the negative electrode |
| US7919208B2 (en) | 2005-10-31 | 2011-04-05 | Sony Corporation | Anode active material and battery |
| JP2013004307A (en) * | 2011-06-16 | 2013-01-07 | Toyota Motor Corp | Secondary battery |
| JP2016509336A (en) * | 2012-12-23 | 2016-03-24 | ユナイテッド テクノロジーズ コーポレイションＵｎｉｔｅｄ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏｒｐｏｒａｔｉｏｎ | Graphite-containing electrode and related method |
-
1992
- 1992-09-29 JP JP25870792A patent/JP3216661B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0776055A1 (en) | 1995-11-24 | 1997-05-28 | PETOCA, Ltd | Negative electrode material for use in lithium-ion secondary battery and process for producing the same |
| JP2001015170A (en) * | 1999-06-29 | 2001-01-19 | Sony Corp | Nonaqueous electrolyte battery |
| JP2001126733A (en) * | 1999-10-27 | 2001-05-11 | Sony Corp | Nonaqueous electrolytic material |
| JP2002110250A (en) * | 2000-09-27 | 2002-04-12 | At Battery:Kk | Non-aqueous electrolyte secondary battery |
| US6852449B2 (en) | 2002-08-29 | 2005-02-08 | Quallion Llc | Negative electrode including a carbonaceous material for a nonaqueous battery |
| US6998192B1 (en) | 2002-08-29 | 2006-02-14 | Quallion Llc | Negative electrode for a nonaqueous battery |
| KR100837648B1 (en) * | 2004-03-31 | 2008-06-13 | 히다치 막셀 가부시키가이샤 | Non-aqueous secondary battery and electronic apparatus containing the same |
| US7174207B2 (en) | 2004-09-23 | 2007-02-06 | Quallion Llc | Implantable defibrillator having reduced battery volume |
| US7919208B2 (en) | 2005-10-31 | 2011-04-05 | Sony Corporation | Anode active material and battery |
| JP2009059713A (en) * | 2008-11-11 | 2009-03-19 | Mitsubishi Materials Corp | Negative electrode material, negative electrode using the same, and lithium ion battery and lithium polymer battery using the negative electrode |
| JP2013004307A (en) * | 2011-06-16 | 2013-01-07 | Toyota Motor Corp | Secondary battery |
| JP2016509336A (en) * | 2012-12-23 | 2016-03-24 | ユナイテッド テクノロジーズ コーポレイションＵｎｉｔｅｄ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏｒｐｏｒａｔｉｏｎ | Graphite-containing electrode and related method |
| US10944108B2 (en) | 2012-12-23 | 2021-03-09 | Raytheon Technologies Corporation | Graphite-containing electrode and method related thereto |
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|---|---|
| JP3216661B2 (en) | 2001-10-09 |
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