JPH0676824A - Manufacture of nonaqueous electrolyte secondary battery - Google Patents
Manufacture of nonaqueous electrolyte secondary batteryInfo
- Publication number
- JPH0676824A JPH0676824A JP4252039A JP25203992A JPH0676824A JP H0676824 A JPH0676824 A JP H0676824A JP 4252039 A JP4252039 A JP 4252039A JP 25203992 A JP25203992 A JP 25203992A JP H0676824 A JPH0676824 A JP H0676824A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- positive electrode
- manganese oxide
- electrolyte secondary
- product
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，放電容量の向上を図る
ことができる非水電解質二次電池の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a non-aqueous electrolyte secondary battery capable of improving discharge capacity.
【０００２】[0002]
【従来技術】リチウムまたはリチウム合金を負極とする
非水電解質二次電池の正極活物質として，従来より，Ｍ
ｎＯ2 ，Ｖ2 Ｏ5 が検討されている。ＭｎＯ2 は充放電
による結晶構造の破壊のため容量減少が著しいため，こ
の対策として予めＬｉイオンを含んだＬｉＭｎ2 Ｏ4 焼
成物を正極活物質に用いることが報告されている（Ｍａ
ｔｅｒｉａｌｓ Ｒｅｓｅａｒｃｈ Ｂｕｌｌｅｔｉｎ
１８ （１９８３）４６１−４７２）。このＬｉＭｎ
2 Ｏ4 焼成物は，リチウム塩粒子とマンガン酸化物粒子
との混合物を焼成して得られる。2. Description of the Related Art As a positive electrode active material for a non-aqueous electrolyte secondary battery using lithium or a lithium alloy as a negative electrode, M has been conventionally used.
nO 2 and V 2 O 5 are being investigated. Since the capacity of MnO 2 is significantly reduced due to the destruction of the crystal structure due to charge and discharge, it has been reported that a LiMn 2 O 4 calcined product containing Li ions is used as a positive electrode active material in advance as a countermeasure (Ma.
terials Research Bulletin
18 (1983) 461-472). This LiMn
The 2 O 4 fired product is obtained by firing a mixture of lithium salt particles and manganese oxide particles.
【０００３】[0003]
【解決しようとする課題】しかしながら，上記正極活物
質を用いた場合には，正極の放電容量が小さくなるとい
う問題がある。即ち，上記従来の正極活物質において
は，リチウム塩粒子またはマンガン酸化物粒子が偏り，
両者の反応が不均一になることがある。そのため，リチ
ウム濃度が高い部分では電気的に不活性なＬｉ2 ＭｎＯ
3 が形成されてしまう。一方，マンガン濃度が高い部分
では未反応のＭｎＯ2 などの残留未反応物が残存してし
まう。そのため，正極活物質の一部が放電不能部とな
り，正極の放電容量が小さくなる。本発明はかかる問題
点に鑑み，放電容量の向上を図ることができる非水電解
質二次電池の製造方法を提供しようとするものである。However, when the above positive electrode active material is used, there is a problem that the discharge capacity of the positive electrode becomes small. That is, in the above-mentioned conventional positive electrode active material, lithium salt particles or manganese oxide particles are unevenly distributed,
The reaction between the two may be non-uniform. Therefore, in a portion where the lithium concentration is high, electrically inactive Li 2 MnO 2
3 will be formed. On the other hand, residual unreacted substances such as unreacted MnO 2 remain in the portion where the manganese concentration is high. Therefore, a part of the positive electrode active material becomes a non-dischargeable portion, and the discharge capacity of the positive electrode becomes small. In view of such problems, the present invention aims to provide a method for manufacturing a non-aqueous electrolyte secondary battery capable of improving the discharge capacity.
【０００４】[0004]
【課題の解決手段】本発明は，水酸化リチウムと酸化マ
ンガンとを混合，粉砕し，その粉砕物を加熱焼成し，得
られたＬｉＭｎ2 Ｏ4 焼成物を正極活物質として用いる
非水電解質二次電池の製造方法において，上記粉砕物の
平均粒径は１〜２μｍの範囲にあることを特徴とする非
水電解質二次電池の製造方法にある。According to the present invention, lithium hydroxide and manganese oxide are mixed and pulverized, the pulverized product is heated and calcined, and the obtained LiMn 2 O 4 calcined product is used as a positive electrode active material. The method for producing a secondary battery is the method for producing a non-aqueous electrolyte secondary battery, characterized in that the crushed material has an average particle size in the range of 1 to 2 μm.
【０００５】本発明において，上記粉砕物の平均粒径が
２μｍを越える場合には，リチウム塩粒子とマンガン酸
化物粒子との接触面積が減少し，両者の反応が均一に行
われなくなり，また反応に長時間を要する。一方，粉砕
物の平均粒径が１μｍ未満の場合には，混合粉砕時のリ
チウム塩粒子への水分の吸着や炭酸ガスとの反応が進行
し，マンガン酸化物粒子との反応活性の低いＬｉ2 ＣＯ
3 が生成される。そのため，正極の放電効率が低下す
る。上記水酸化リチウムと酸化マンガンとを混合した混
合物を粉砕する方法としては，自動乳鉢，ボールミル，
スタンプミル，遊星式ミル等を用いる乾式粉砕方法が好
ましい。In the present invention, when the average particle size of the pulverized product exceeds 2 μm, the contact area between the lithium salt particles and the manganese oxide particles decreases, and the reaction between the two does not occur uniformly, and the reaction Takes a long time. On the other hand, when the average particle size of the pulverized product is less than 1 μm, the adsorption of water to the lithium salt particles during the mixed pulverization and the reaction with carbon dioxide proceed, and Li 2 which has a low reaction activity with the manganese oxide particles. CO
3 is generated. Therefore, the discharge efficiency of the positive electrode decreases. As a method for pulverizing the mixture of the above lithium hydroxide and manganese oxide, an automatic mortar, a ball mill,
A dry crushing method using a stamp mill, a planetary mill or the like is preferable.
【０００６】[0006]
【作用及び効果】本発明においては，水酸化リチウムと
酸化マンガンとを混合，粉砕して得られた粉砕物の平均
粒径は，２μｍ以下である。そのため，粉砕物中のリチ
ウム塩粒子とマンガン酸化物粒子との接触箇所が多く，
両者の接触総面積が大きくなる。それ故，両者の反応を
短時間で，かつ均一に進行させることができる。従っ
て，焼成により得られたＬｉＭｎ2 Ｏ4 焼成物は単相と
なる。In the present invention, the average particle size of the pulverized product obtained by mixing and pulverizing lithium hydroxide and manganese oxide is 2 μm or less. Therefore, there are many contact points between lithium salt particles and manganese oxide particles in the pulverized product,
The total area of contact between the two becomes large. Therefore, the reaction between the both can proceed uniformly in a short time. Therefore, the LiMn 2 O 4 fired product obtained by firing becomes a single phase.
【０００７】また，上記粉砕物の平均粒径は，１μｍ以
上である。そのため，混合粉砕時のリチウム塩粒子の表
面への水分の吸着や炭酸ガスとの反応が抑制され，マン
ガン酸化物粒子との反応活性の低いＬｉ2 ＣＯ3 の生成
が抑制される。それ故，焼成により得られたＬｉＭｎ2
Ｏ4 焼成物は単相となる。従って，上記ＬｉＭｎ2 Ｏ4
焼成物を正極活物質として用いることにより，正極活物
質粒子全体において放電反応が起こり，正極の放電容量
の向上を図ることができる。本発明によれば，放電容量
の向上を図ることができる非水電解質二次電池の製造方
法を提供することができる。The average particle size of the pulverized product is 1 μm or more. Therefore, the adsorption of water on the surface of the lithium salt particles and the reaction with carbon dioxide at the time of mixed pulverization are suppressed, and the generation of Li 2 CO 3 having low reaction activity with the manganese oxide particles is suppressed. Therefore, LiMn 2 obtained by firing
The O 4 fired product becomes a single phase. Therefore, the above LiMn 2 O 4
By using the calcined material as the positive electrode active material, a discharge reaction occurs in the whole particles of the positive electrode active material, and the discharge capacity of the positive electrode can be improved. According to the present invention, it is possible to provide a method for manufacturing a non-aqueous electrolyte secondary battery that can improve the discharge capacity.
【０００８】[0008]
実施例１ 本発明にかかる実施例について図１〜図３を用いて説明
する。本例は，非水電解質二次電池を製造する方法であ
る。上記二次電池に用いられる正極活物質は，ＬｉＭｎ
2 Ｏ4 焼成物である。該ＬｉＭｎ2 Ｏ4 焼成物を作製す
るに当たっては，水酸化リチウムと酸化マンガンとを混
合，粉砕し，その粉砕物を加熱焼成する。該粉砕物の平
均粒径は１〜２μｍの範囲にある。Example 1 An example according to the present invention will be described with reference to FIGS. This example is a method of manufacturing a non-aqueous electrolyte secondary battery. The positive electrode active material used in the secondary battery is LiMn.
2 O 4 baked product. In producing the LiMn 2 O 4 fired product, lithium hydroxide and manganese oxide are mixed and pulverized, and the pulverized product is heated and fired. The average particle size of the pulverized product is in the range of 1 to 2 μm.
【０００９】以下，上記製造方法を詳説する。まず，Ｌ
ｉＯＨ・Ｈ2 ＯとＭｎＯ2 とをＬｉ／Ｍｎ＝１／２のモ
ル比でそれぞれ秤量し，自動乳鉢で混合しつつ，粉砕を
行った。粉砕時間は表１に示すごとく，１／６，１，
５，７，１０時間とした。次に，得られた粉砕物の平均
粒径を測定した。測定装置は，マイクロトラックＭｏｄ
ｅｌ，７９９５−１０を用いた。分散溶媒には，ｎ−ヘ
キサンを用いた。測定の結果を表１に示す。同表より知
られるごとく，粉砕時間の増加に伴い，粉砕物の平均粒
径が減少した。The above manufacturing method will be described in detail below. First, L
iOH.H 2 O and MnO 2 were weighed in a molar ratio of Li / Mn = 1/2, and pulverized while being mixed in an automatic mortar. The crushing time is 1/6, 1, 1, as shown in Table 1.
It was set to 5, 7, and 10 hours. Next, the average particle size of the obtained pulverized product was measured. The measuring device is Microtrac Mod
el, 7995-10 was used. N-Hexane was used as the dispersion solvent. The measurement results are shown in Table 1. As can be seen from the table, the average particle size of the pulverized product decreased as the pulverization time increased.
【００１０】次に，この粉砕物を大気中で４７０℃で３
時間焼成した。次いで，得られたＬｉＭｎ2 Ｏ4 焼成物
を冷水中に投入して急冷した。その後，これを吸引濾過
器により濾過し，８０℃で２４時間乾燥した。次に，該
ＬｉＭｎ2 Ｏ4 焼成物をＸ線回折法により調査した。そ
の結果を，平均粒径１〜２μｍの粉砕物を用いた場合を
図１（Ａ）に，平均粒径１μｍ未満及び２μｍを越える
粉砕物を用いた場合を図１（Ｂ）に示した。Next, this pulverized product was heated at 470 ° C. for 3 hours in air.
Burned for hours. Then, the obtained LiMn 2 O 4 fired product was put into cold water and rapidly cooled. Then, this was filtered with a suction filter and dried at 80 ° C. for 24 hours. Next, the LiMn 2 O 4 fired product was investigated by an X-ray diffraction method. The results are shown in FIG. 1 (A) when using a pulverized product having an average particle size of 1 to 2 μm, and in FIG. 1 (B) when using a pulverized product having an average particle size of less than 1 μm and exceeding 2 μm.
【００１１】同図より知られるごとく，粉砕物の平均粒
径が１〜２μｍの場合では単相のＬｉＭｎ2 Ｏ4 焼成物
が得られた。一方，図１（Ｂ）より知られるごとく，２
μｍを越える場合及び１μｍ未満の場合では，ＬｉＭｎ
2 Ｏ4 焼成物の他に副生成物や残留未反応物が生成して
いた。（図中△で示す強度）。As is known from the figure, a single-phase LiMn 2 O 4 calcined product was obtained when the crushed product had an average particle size of 1 to 2 μm. On the other hand, as is known from FIG.
If it exceeds 1 μm or is less than 1 μm, LiMn
In addition to the 2 O 4 calcined product, by-products and residual unreacted products were produced. (Strength indicated by Δ in the figure).
【００１２】次に，上記生成物をそれぞれ正極活物質と
して図３に示すようなコイン型電池を作製した。コイン
型電池は非水電解質二次電池である。該二次電池８は，
正極１と負極２とを有し，両者の間にはセパレータ３が
介在している。正極１及び負極２は，正極缶４及び負極
缶５内にガスケット６を介して密封されている。上記正
極１として，上記製法により得た正極活物質を用いる。
即ち，上記正極１としては，上記正極活物質９０重量
部，導電剤としてのケッチエンブラック６重量部，及び
結着剤としてのポリテトラフルオロエチレン４重量部を
混合した正極合剤５０ｍｇが用いられている。Next, a coin type battery as shown in FIG. 3 was prepared by using the above products as a positive electrode active material. The coin type battery is a non-aqueous electrolyte secondary battery. The secondary battery 8 is
It has a positive electrode 1 and a negative electrode 2, and a separator 3 is interposed between them. The positive electrode 1 and the negative electrode 2 are sealed in the positive electrode can 4 and the negative electrode can 5 via a gasket 6. As the positive electrode 1, the positive electrode active material obtained by the above manufacturing method is used.
That is, as the positive electrode 1, 50 mg of a positive electrode mixture prepared by mixing 90 parts by weight of the positive electrode active material, 6 parts by weight of Ketchen black as a conductive agent, and 4 parts by weight of polytetrafluoroethylene as a binder is used. ing.
【００１３】正極缶４の内側には，直径１４ｍｍのステ
ンレス網がスポット溶接されていて，正極１が圧力３ｔ
／ｃｍ2 で加圧成形されている。一方，負極缶５の内側
にはニッケルエキスパンドメタルの集電体が薄層状にス
ポット溶接されている。該集電体には直径１５ｍｍのリ
チウム片よりなる負極２が，圧着されている。A stainless steel net having a diameter of 14 mm is spot-welded inside the positive electrode can 4, and the positive electrode 1 has a pressure of 3 t.
/ Cm 2 is pressure-molded. On the other hand, a nickel expanded metal current collector is spot-welded in a thin layer inside the negative electrode can 5. The negative electrode 2 made of a lithium piece having a diameter of 15 mm is pressure-bonded to the current collector.
【００１４】セパレータ３としては，ポリプロピレン製
の不織布を用いている。また，二次電池８内には，電解
液が充填されている。該電解液としては，炭酸プロピレ
ン中に過塩素酸リチウム０．７モル／リットルを溶解し
たものを用いている。As the separator 3, a polypropylene non-woven fabric is used. Further, the secondary battery 8 is filled with an electrolytic solution. As the electrolytic solution, a solution prepared by dissolving 0.7 mol / liter of lithium perchlorate in propylene carbonate is used.
【００１５】次に，上記二次電池８の放電容量について
実験を行った。二次電池８の正極１には，前記したごと
く，粉砕時間を種々に変えて作製した正極活物質が用い
られている。上記放電容量の測定方法について説明す
る。二次電池を電流密度１ｍＡ／ｃｍ2 で，上限電圧
４．１Ｖで，５時間充電する。その後，２Ｖまで放電す
る充放電試験を行い，二次電池の５サイクル目の放電容
量を測定した。その結果を表１に示す。Next, an experiment was conducted on the discharge capacity of the secondary battery 8. As the positive electrode 1 of the secondary battery 8, as described above, the positive electrode active material produced by changing the grinding time variously is used. The method for measuring the discharge capacity will be described. The secondary battery is charged at a current density of 1 mA / cm 2 and an upper limit voltage of 4.1 V for 5 hours. After that, a charge / discharge test of discharging up to 2 V was performed, and the discharge capacity at the 5th cycle of the secondary battery was measured. The results are shown in Table 1.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１より知られるごとく，平均粒径１〜２
μｍの粉砕物を焼成して得たＬｉＭｎ2 Ｏ4 焼成物を正
極活物質に用いた二次電池は，大きな放電容量を示し，
正極活物質として優れていることが分かる。As is known from Table 1, average particle diameters of 1-2
A secondary battery using a LiMn 2 O 4 fired product obtained by firing a pulverized product of μm as a positive electrode active material shows a large discharge capacity,
It turns out that it is excellent as a positive electrode active material.
【００１８】このことは，以下の理由によるものであ
る。即ち，図２（Ａ）に示すごとく，粉砕物１０の平均
粒径は２μｍ以下であるため，粉砕物１０中のリチウム
塩粒子１１とマンガン酸化物粒子１２との接触箇所が多
く，両者の接触総面積が大きくなる。それ故，両者の反
応を短時間で，かつ均一に進行させることができる。従
って，焼成により得られたＬｉＭｎ2 Ｏ4 焼成物は単相
となる。This is due to the following reasons. That is, as shown in FIG. 2 (A), since the average particle size of the pulverized material 10 is 2 μm or less, there are many contact points between the lithium salt particles 11 and the manganese oxide particles 12 in the pulverized material 10, and the contact between them is large. The total area becomes large. Therefore, the reaction between the both can proceed uniformly in a short time. Therefore, the LiMn 2 O 4 fired product obtained by firing becomes a single phase.
【００１９】また，上記粉砕物１０の平均粒径は１μｍ
以上であるため，混合粉砕時のリチウム塩粒子１１の表
面への水分の吸着や炭酸ガスとの反応が抑制され，マン
ガン酸化物粒子１２との反応活性の低いＬｉ2 ＣＯ3 の
生成が抑制される。それ故，焼成により得られたＬｉＭ
ｎ2 Ｏ4 焼成物は単相となる。従って，上記ＬｉＭｎ2
Ｏ4 焼成物を正極活物質として用いることにより，正極
活物質粒子全体において放電反応が起こり，正極の放電
容量の向上を図ることができる。The crushed product 10 has an average particle size of 1 μm.
As described above, the adsorption of water on the surface of the lithium salt particles 11 and the reaction with carbon dioxide during the mixed pulverization are suppressed, and the generation of Li 2 CO 3 having a low reaction activity with the manganese oxide particles 12 is suppressed. It Therefore, LiM obtained by firing
The n 2 O 4 fired product becomes a single phase. Therefore, the above LiMn 2
By using the O 4 calcined product as the positive electrode active material, a discharge reaction occurs in the whole positive electrode active material particles, and the discharge capacity of the positive electrode can be improved.
【００２０】一方，粉砕物の平均粒径が２μｍを越える
場合，或いは１μｍ未満の場合には，放電容量が３．６
ｍＡｈ以下である。これは，以下の理由によるものであ
る。即ち，粉砕物の平均粒径が２μｍを越える場合に
は，図２（Ｂ）に示すごとく，粉砕物１００中のリチウ
ム塩粒子１１０とマンガン酸化物粒子１２０との接触面
積が減少し，両者の反応が均一に行われなくなる。その
ため，電気的に不活性な未反応部分が残存する。On the other hand, when the average particle size of the pulverized product exceeds 2 μm or is less than 1 μm, the discharge capacity is 3.6.
It is mAh or less. This is due to the following reasons. That is, when the average particle size of the pulverized product exceeds 2 μm, the contact area between the lithium salt particles 110 and the manganese oxide particles 120 in the pulverized product 100 decreases as shown in FIG. The reaction is not uniform. Therefore, an electrically inactive unreacted part remains.
【００２１】また部分的にリチウム塩粒子１１０または
マンガン酸化物粒子１２０が偏りやすく，両者の反応が
不均一になり，電気的に不活性なＬｉ2 ＭｎＯ3 や残留
未反応物が存在し，充分な放電容量が得られないと考え
られる。また，１μｍ未満の場合には，混合粉砕時のリ
チウム塩粒子の表面への水分の吸着や炭酸ガスとの反応
が進行し，マンガン酸化物粒子との反応活性の低いＬｉ
2 ＣＯ3 が生成されるため，正極の放電効率が低下す
る。In addition, the lithium salt particles 110 or the manganese oxide particles 120 are likely to be partially biased, the reaction between the two becomes non-uniform, and electrically inactive Li 2 MnO 3 and residual unreacted substances are present. It is considered that a sufficient discharge capacity cannot be obtained. On the other hand, when the particle size is less than 1 μm, the adsorption of water on the surface of the lithium salt particles during the mixing and pulverization and the reaction with carbon dioxide proceed, and Li having a low reaction activity with the manganese oxide particles is used.
Since 2 CO 3 is produced, the discharge efficiency of the positive electrode is reduced.
【図１】実施例にかかる，ＬｉＭｎ2 Ｏ4 焼成物のＸ線
回折図。FIG. 1 is an X-ray diffraction diagram of a LiMn 2 O 4 fired product according to an example.
【図２】実施例にかかる，粉砕物中の粒子構造の説明
図。FIG. 2 is an explanatory view of a particle structure in a pulverized product according to an example.
【図３】実施例の非水電解質二次電池の断面図。FIG. 3 is a cross-sectional view of a non-aqueous electrolyte secondary battery of an example.
【符号の説明】 １．．．正極， １０．．．粉砕物， １１．．．リチウム塩粒子， １２．．．マンガン酸化物粒子， ２．．．負極， ８．．．非水電解質二次電池，[Explanation of symbols] 1. ． ． Positive electrode, 10. ． ． Crushed product, 11. ． ． Lithium salt particles, 12. ． ． Manganese oxide particles, 2. ． ． Negative electrode, 8. ． ． Non-aqueous electrolyte secondary battery,
Claims (1)
合，粉砕し，その粉砕物を加熱焼成し，得られたＬｉＭ
ｎ2 Ｏ4 焼成物を正極活物質として用いる非水電解質二
次電池の製造方法において，上記粉砕物の平均粒径は１
〜２μｍの範囲にあることを特徴とする非水電解質二次
電池の製造方法。1. LiM obtained by mixing and crushing lithium hydroxide and manganese oxide and heating and calcination of the crushed product.
In the method for producing a non-aqueous electrolyte secondary battery using a calcined product of n 2 O 4 as a positive electrode active material, the average particle size of the pulverized product is 1
The method for producing a non-aqueous electrolyte secondary battery is characterized by being in the range of ˜2 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4252039A JPH0676824A (en) | 1992-08-27 | 1992-08-27 | Manufacture of nonaqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4252039A JPH0676824A (en) | 1992-08-27 | 1992-08-27 | Manufacture of nonaqueous electrolyte secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0676824A true JPH0676824A (en) | 1994-03-18 |
Family
ID=17231728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4252039A Pending JPH0676824A (en) | 1992-08-27 | 1992-08-27 | Manufacture of nonaqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676824A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996012676A1 (en) * | 1994-10-19 | 1996-05-02 | Valence Technology, Inc. | Lithium manganese oxide, method of preparation and uses thereof |
| US6136476A (en) * | 1999-01-29 | 2000-10-24 | Hydro-Quebec Corporation | Methods for making lithium vanadium oxide electrode materials |
| JP2006173095A (en) * | 2004-11-22 | 2006-06-29 | Nissan Motor Co Ltd | Battery structure |
| US7341805B2 (en) | 2000-11-16 | 2008-03-11 | Hitachi Maxell, Ltd. | Lithium-containing complex oxide, non-aqueous secondary battery using the lithium-containing complex oxide, and method for producing the lithium-containing complex oxide |
| WO2011021481A1 (en) * | 2009-08-21 | 2011-02-24 | 日清エンジニアリング株式会社 | Process for production of positive electrode material for secondary batteries |
| US8954247B2 (en) | 2011-11-29 | 2015-02-10 | Honda Motor Co., Ltd. | Power transmission apparatus and method for controlling power transmission apparatus |
| US8962173B1 (en) * | 2010-04-14 | 2015-02-24 | Hrl Laboratories, Llc | Lithium battery structures |
-
1992
- 1992-08-27 JP JP4252039A patent/JPH0676824A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996012676A1 (en) * | 1994-10-19 | 1996-05-02 | Valence Technology, Inc. | Lithium manganese oxide, method of preparation and uses thereof |
| US6136476A (en) * | 1999-01-29 | 2000-10-24 | Hydro-Quebec Corporation | Methods for making lithium vanadium oxide electrode materials |
| US7341805B2 (en) | 2000-11-16 | 2008-03-11 | Hitachi Maxell, Ltd. | Lithium-containing complex oxide, non-aqueous secondary battery using the lithium-containing complex oxide, and method for producing the lithium-containing complex oxide |
| JP2006173095A (en) * | 2004-11-22 | 2006-06-29 | Nissan Motor Co Ltd | Battery structure |
| WO2011021481A1 (en) * | 2009-08-21 | 2011-02-24 | 日清エンジニアリング株式会社 | Process for production of positive electrode material for secondary batteries |
| JP2011044347A (en) * | 2009-08-21 | 2011-03-03 | Nisshin Engineering Co Ltd | Method of manufacturing positive electrode material for secondary battery |
| US8962173B1 (en) * | 2010-04-14 | 2015-02-24 | Hrl Laboratories, Llc | Lithium battery structures |
| US9843029B1 (en) | 2010-04-14 | 2017-12-12 | Hrl Laboratories, Llc | Lithium battery structures |
| US8954247B2 (en) | 2011-11-29 | 2015-02-10 | Honda Motor Co., Ltd. | Power transmission apparatus and method for controlling power transmission apparatus |
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