JPS59190225A - Preparation of active material of manganese dioxide for cell - Google Patents
Preparation of active material of manganese dioxide for cellInfo
- Publication number
- JPS59190225A JPS59190225A JP58064699A JP6469983A JPS59190225A JP S59190225 A JPS59190225 A JP S59190225A JP 58064699 A JP58064699 A JP 58064699A JP 6469983 A JP6469983 A JP 6469983A JP S59190225 A JPS59190225 A JP S59190225A
- Authority
- JP
- Japan
- Prior art keywords
- active material
- manganese dioxide
- mno2
- cell
- present
- 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
-
- 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
- Inorganic Compounds Of Heavy Metals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】 （イｌ Ｍｉｄ、業上の利用分野 本発明は電池用二酸化マンガン活物質の製法に関する。[Detailed description of the invention] (Il Mid, Industrial use field The present invention relates to a method for producing manganese dioxide active material for batteries.
（口１従来技術
乾電池、アルカリ乾電池、非水電解液電池に代表される
ようＣ：陽極活物質として二酸化マンガンが広く一般的
Ｃ二使用されている。そして二酸化マンガンの製法Ｃ二
ついても種々の方法が知られている。(1) Conventional technology Manganese dioxide is widely used as an anode active material, as exemplified by dry batteries, alkaline batteries, and non-aqueous electrolyte batteries. method is known.
し場 発明の目的
本発明の目的とするところは、特に硝酸マンガン°水和
物を出発物質とし、これを熱分解して二酸化マンガンを
得る方法に看目し、電池性能向上≦二寄与する二酸化マ
ンガンの製法を提案することにある。OBJECTS OF THE INVENTION The purpose of the present invention is to focus on a method of obtaining manganese dioxide by thermally decomposing it using manganese nitrate hydrate as a starting material, and to obtain manganese dioxide that contributes to improvement of battery performance. The purpose is to propose a method for manufacturing manganese.
に）発明の構成
本発明の要旨とするところは、硝酸マンガン・６水和物
を密閉容器内（：おいて１７０〜６００”Ｃの温度範囲
で熱分解することを特徴とする電池用二酸化マンガン活
物質の製法Ｃ二ある。2) Structure of the Invention The gist of the present invention is to provide a manganese dioxide for batteries, characterized in that manganese nitrate hexahydrate is thermally decomposed in a closed container (in a temperature range of 170 to 600"C). There are two active material manufacturing methods C.
（ホ）実施例
以下本発明の一実施例につき非水電池用陽極の場合を例
Ｃ二とり詳述する。(e) Example Hereinafter, as an example of the present invention, the case of an anode for a non-aqueous battery will be described in detail using Example C.
硝酸マンガン・６水和物［ＭｎｔＮＯ３１・６ＨｚＯ〕
を密閉容器内に入れ２５０″Ｃで２時間、熱分解し分解
生成物を粉砕して後２００メツシユパスを行い二酸化マ
ンガン活物質粉末を得る。ここで密閉容器内の雰囲気と
しては酸化雰囲気、還元雰囲気を間合ない。又熱処理嶽
度については硝酸マンガン・６水和物が熱分解する１７
０〜３００℃の温度範囲であれば良く、熱処理温度に応
じて熱処遅時間が考慮される。Manganese nitrate hexahydrate [MntNO31・6HzO]
is placed in a sealed container and thermally decomposed at 250''C for 2 hours, and the decomposition products are pulverized and then subjected to 200 mesh passes to obtain manganese dioxide active material powder.The atmosphere in the sealed container is an oxidizing atmosphere and a reducing atmosphere. Also, regarding heat treatment, manganese nitrate hexahydrate will thermally decompose.
The temperature range may be from 0 to 300°C, and the heat treatment delay time is taken into consideration depending on the heat treatment temperature.
本実′流側においては、非水電池の陽極活物質として適
用するため、水分除去の目的で上記二酸化マンガン活物
質を更に二３５０〜４３０″Ｃで５時間熱処理した。In the current implementation, the manganese dioxide active material was further heat-treated at 2350 to 430''C for 5 hours to remove moisture in order to be applied as an anode active material for a non-aqueous battery.
ついで、この二酸化マンガン活物質８５重量部、導電剤
としてのアセチレンブラック１０：ｍｌｉｔ部及び結着
剤としてのフッ素樹脂粉末５重量部を混合して陽極合剤
とし、このうち５０ｙを秤量し成型圧３ Ｆ７Ｊ で
直径２０φの集電リングに加圧成型した後、更に３００
℃で真空乾燥して陽極とする。Next, 85 parts by weight of this manganese dioxide active material, 10:ml part of acetylene black as a conductive agent, and 5 parts by weight of fluororesin powder as a binder were mixed to form an anode mixture, and 50y of this was weighed and molded under pressure. 3 After pressure molding into a current collector ring with a diameter of 20φ using F7J, further 300 mm
Vacuum dry at ℃ to use as an anode.
陰極はリチウム圧延板を直径２０φ（二打抜いたものを
用い、又電解液はプロピレンカーボネートと１．２ジメ
トキシエタンとの等体積混合溶媒に過塩素酸リチウムを
１）溶解したものでありポリプロピレン不織布よりなる
セパレータＣ二含浸して用い本発明に係る非水電解液電
池囚を作成した。The cathode was a rolled lithium plate with a diameter of 20φ (double punched), and the electrolyte was a polypropylene non-woven fabric with 1 part of lithium perchlorate dissolved in an equal volume mixed solvent of propylene carbonate and 1.2 dimethoxyethane. A non-aqueous electrolyte battery according to the present invention was prepared by impregnating a separator C with two separators.
尚、電池寸法は外径２５φ、高さ２．８間であった。Note that the battery dimensions were an outer diameter of 25φ and a height of 2.8 mm.
一方、本発明法Ｃ二よる優位性を調べるために、硝酸マ
ンガン・ろ水和物を開放容器内において２５０℃で熱分
解して得た二酸化マンガンを活物質とすることを除いて
、他は実施例と同様の方法で比較電池ｔＢｌを作成した
。On the other hand, in order to investigate the superiority of method C2 of the present invention, other methods were used, except that manganese dioxide obtained by thermally decomposing manganese nitrate filter hydrate at 250°C in an open container was used as the active material. A comparative battery tBl was created in the same manner as in the example.
第１図及び第２図はこれら電池の放電特性比較図であり
、第１図は室温下（＝おける５、６にΩ定負荷放電特性
、第２図は室温下における５６０Ω定負荷放電特性を夫
々示す。Figures 1 and 2 are comparison diagrams of the discharge characteristics of these batteries. Figure 1 shows the 560Ω constant load discharge characteristics at room temperature (= 5 and 6), and Figure 2 shows the 560Ω constant load discharge characteristics at room temperature. Show each.
（へ）発明の効果
第１図及び第２図より明白なるように、本発明法により
得た二酸化マンガンを陽極活物質として用いた電池囚は
比較電池ｉＢＩに比して電池性能が改善されている。本
発明による効果を考察するに、本発明法の如く硝酸マン
ガン・６水紳物を密閉容器内で１７０〜３００”Ｃで加
熱分解した二酸化マンガンの粒径は１０／１程度である
のに対し従来の如く開放容器内で熱分解して得た二酸化
マンガンの粒径は１ＤＯｆｉ程度であり、本発明法によ
ればより微粒状の二酸化マンガンが得られた。これは密
閉容器内での熱分解であるため、分解時の生成ガス【例
えばＮ０２）によって圧力下で行われるＫめＭ６’ｙｆ
解反応が急速に進行するためであると考えられる。(f) Effects of the invention As is clear from Figures 1 and 2, the battery performance of the battery using manganese dioxide obtained by the method of the present invention as the anode active material was improved compared to the comparative battery iBI. There is. Considering the effects of the present invention, the particle size of manganese dioxide obtained by heating manganese nitrate/6-hydrogen in a closed container at 170 to 300"C as in the method of the present invention is about 10/1, whereas The particle size of manganese dioxide obtained by pyrolysis in an open container as in the conventional method is about 1DOfi, but finer particles of manganese dioxide were obtained by the method of the present invention. Therefore, Kme M6'yf is carried out under pressure by the gas produced during decomposition (for example, N02).
This is thought to be because the decomposition reaction progresses rapidly.
その結果、二酸化マンガンの見掛密度は本発明法では６
．Ｚ±０．１ｇ・ｉ４であるのに対し従来法では６．３
±０．１２・ゴ４であり本発明法の方が大きく容量の増
加が計れる。As a result, the apparent density of manganese dioxide was 6
．． Z±0.1g・i4, whereas in the conventional method it is 6.3
The difference is ±0.12·go4, and the method of the present invention allows for a larger increase in capacity.
又、夫々の方法で得た二酸化マンガンを用いて作製した
陽極の比抵抗は本発明法では０．４Ω・ｃ’ｓであるの
に対し、従来法ではＺ５Ω・備であった。In addition, the specific resistance of the anode produced using manganese dioxide obtained by each method was 0.4Ω·c's in the method of the present invention, whereas it was Z5Ω·c's in the conventional method.
よって、本発明法により得た二酸化マンガンを用いれば
電池電圧の向上も計れる。Therefore, by using manganese dioxide obtained by the method of the present invention, it is possible to improve the battery voltage.
第１図及び第２図は本発明法ｆ二より得た二酸化マンガ
ンを陽極活物質とする非水電解液電池囚と比較電池ＩＢ
Ｉとの放電特性比較図を夫々示す。Figures 1 and 2 show a non-aqueous electrolyte battery using manganese dioxide obtained by method f2 of the present invention as an anode active material and a comparative battery IB.
A comparative diagram of discharge characteristics with I is shown.
Claims (1)
７０〜３００℃の温度範囲で熱分解することを特徴とす
る電池用二酸化マンガン活物質の製法。■ Place manganese nitrate filtrate in a closed container at C2.
A method for producing a manganese dioxide active material for batteries, which is thermally decomposed in a temperature range of 70 to 300°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064699A JPS59190225A (en) | 1983-04-12 | 1983-04-12 | Preparation of active material of manganese dioxide for cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064699A JPS59190225A (en) | 1983-04-12 | 1983-04-12 | Preparation of active material of manganese dioxide for cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59190225A true JPS59190225A (en) | 1984-10-29 |
| JPH0335250B2 JPH0335250B2 (en) | 1991-05-27 |
Family
ID=13265652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58064699A Granted JPS59190225A (en) | 1983-04-12 | 1983-04-12 | Preparation of active material of manganese dioxide for cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59190225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786666A (en) * | 2010-02-10 | 2010-07-28 | 彭天剑 | High-purity manganese dioxide and preparation method thereof as well as lithium manganese oxide anode material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57135727A (en) * | 1981-02-09 | 1982-08-21 | Nec Corp | Preparation of manganese dioxide |
-
1983
- 1983-04-12 JP JP58064699A patent/JPS59190225A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57135727A (en) * | 1981-02-09 | 1982-08-21 | Nec Corp | Preparation of manganese dioxide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786666A (en) * | 2010-02-10 | 2010-07-28 | 彭天剑 | High-purity manganese dioxide and preparation method thereof as well as lithium manganese oxide anode material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0335250B2 (en) | 1991-05-27 |
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