CN100470895C - Method for preparing anode material of lithium-iron disulphide battery - Google Patents
Method for preparing anode material of lithium-iron disulphide battery Download PDFInfo
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- CN100470895C CN100470895C CNB2006100118780A CN200610011878A CN100470895C CN 100470895 C CN100470895 C CN 100470895C CN B2006100118780 A CNB2006100118780 A CN B2006100118780A CN 200610011878 A CN200610011878 A CN 200610011878A CN 100470895 C CN100470895 C CN 100470895C
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Abstract
The invention relates to a method for preparing anode material of lithium-iron disulphide battery by using conductive carbon material, natrium thiosulfuricum, ferrous sulfate and elemental sulfur as raw material through low temperature hydrothermal reaction. The formulation of the anode material comprises, conductive carbon material 0.5-10%, natrium thiosulfuricum 40-70%, ferrous sulphate 40-70%, and elemental sulfur 1-10%.
Description
Technical field
The present invention relates to a kind of preparation method of anode material of lithium-iron disulphide battery, belong to new material technology field.
Background technology
Battery of lithium-iron disulphide is the disposable lithium-battery of high energy, light weight, environmental protection, and operating voltage 1.5V can exchange with alkaline Mn cell, ni-mh, NI-G, zinc-silver oxide cell and use, and its discharge platform is steady, storage life is long, security performance is good.The theoretical capacity of this cell positive material ferrous disulfide is 890mAh/g, and the capacity of single AA (No. 5) battery is higher than 3000mAh, and when particularly using in the heavy duty occasion, its performance is 4～10 times of common batteries.Being mainly used at present in the electrical appliances such as digital camera, MP3, PDAs, handheld game machine, portable CD Player, palmtop PC, digital display instrument, medicine equipment, also is that the self-operated thermostatic controller of use under the cold climate and the ideal of the used battery of other outdoor electronic installation are selected.So far, have only the U.S. Eveready company can such battery of large-scale production in the world, its selling price be higher, and the price of domestic imported product is about 25 yuan every.Therefore, the domestic and international market demand growth has a high potential.
Comply with World Battery industry further to high energy, green, secure side trend to development.The technology of preparing of lithium/pyrite battery positive electrode of the present invention adopts the raw and auxiliary material of cheapness, unique material processing method and simple and effective production technology, has reduced production cost significantly.
Chinese invention patent CN1624196 and CN1387265 disclose the preparation method of ferrous disulfide, but method is loaded down with trivial details, are not suitable for the preparation of lithium-iron disulfide positive electrode.For high performance battery, its positive electrode should have electric conductivity preferably.The present invention prepares the good anode material of lithium-iron disulphide battery of electric conductivity by simple formulation and material cheaply.Simple, the easily control, with low cost of this method.
Summary of the invention
The technology of preparing that the present invention is propose for the performance that improves battery of lithium-iron disulphide a kind of efficient, low-cost, be suitable for the anode material of lithium-iron disulphide battery of suitability for industrialized production.
A kind of method for preparing anode material of lithium-iron disulphide battery that the present invention proposes, it is characterized in that: described method is a raw material with conductive carbon material, sodium thiosulfate, ferrous sulfate and elemental sulfur, by the low-temperature hydrothermal reaction, obtain the lithium-iron disulfide composite positive pole.
In above-mentioned preparation method, described conductive carbon material is one or several mixtures in carbon black, acetylene black and the graphite.
In above-mentioned preparation method, the mass percent of described positive electrode is: the content of conductive carbon material is 0.5～10%, and the content of sodium thiosulfate is 40～70%, and the content of ferrous sulfate is 40～70%, and the content of elemental sulfur is 1～10%.。
In above-mentioned preparation method, described low-temperature hydrothermal reaction is that conductive carbon material, sodium thiosulfate, ferrous sulfate and elemental sulfur are mixed in proportion, places water heating kettle, adds an amount of water, and the mass ratio of water and compound is 0.5～3.0.
In above-mentioned preparation method, the temperature of described hydro-thermal reaction is 90～200 ℃, and the reaction time is 10～48 hours.
In above-mentioned preparation method, described product after filtering, water, dilute sulfuric acid, CS successively
2Wash.
Its core technology of method that the present invention proposes is to adopt simple formulation, when the hydro thermal method synthesizing ferrous disulfide, adds conductive carbon material, and original position is synthetic compound, makes material compound evenly, function admirable.The present invention by the low-temperature hydrothermal reaction, obtains the C/FeS of function admirable by being raw material with conductive carbon material, sodium thiosulfate, ferrous sulfate and elemental sulfur
2Composite positive pole.This material has low cost, characteristics that performance is high.And this method preparation cost is low, technological process is simple, has very big using value.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further:
Embodiment one. and mix by 1% carbon black, 55% sodium thiosulfate, 40% ferrous sulfate and 4% sulphur, place water heating kettle, add an amount of water, the mass ratio of water and compound is 1.0.Be heated to 200 ℃ and kept 48 hours.After the cooling, filter.Water, dilute sulfuric acid, CS successively at last
2Wash, obtain C/FeS
2Composite positive pole.
Embodiment two. and mix by 3% carbon black, 40% sodium thiosulfate, 47% ferrous sulfate and 10% sulphur, place water heating kettle, add an amount of water, the mass ratio of water and compound is 0.5.Be heated to 90 ℃ and kept 24 hours.After the cooling, filter.Water, dilute sulfuric acid, CS successively at last
2Wash, obtain C/FeS
2Composite positive pole.
Embodiment three. and mix by 10% carbon black, 49% sodium thiosulfate, 40% ferrous sulfate and 1% sulphur, place water heating kettle, add an amount of water, the mass ratio of water and compound is 2.0.Be heated to 150 ℃ and kept 10 hours.After the cooling, filter.Water, dilute sulfuric acid, CS successively at last
2Wash, obtain C/FeS
2Composite positive pole.
Embodiment four. and mix by 0.5% carbon black, 40% sodium thiosulfate, 55% ferrous sulfate and 4.5% sulphur, place water heating kettle, add an amount of water, the mass ratio of water and compound is 3.0.Be heated to 120 ℃ and kept 30 hours.After the cooling, filter.Water, dilute sulfuric acid, CS successively at last
2Wash, obtain C/FeS
2Composite positive pole.
Claims (4)
1, a kind of method for preparing anode material of lithium-iron disulphide battery is characterized in that: described method is a raw material with conductive carbon material, sodium thiosulfate, ferrous sulfate and elemental sulfur, by the low-temperature hydrothermal reaction, obtains anode material of lithium-iron disulphide battery; The mass percent that wherein prepares the positive electrode raw material is: the content of conductive carbon material is 0.5～10%, and the content of sodium thiosulfate is 40～55%, and the content of ferrous sulfate is 40～55%, and the content of elemental sulfur is 1～10%; The temperature of described low-temperature hydrothermal reaction is 90～200 ℃, and the reaction time is 10～48 hours.
2, preparation method according to claim 1 is characterized in that: described conductive carbon material is one or several mixtures in carbon black, acetylene black and the graphite.
3, preparation method according to claim 1, it is characterized in that: described low-temperature hydrothermal reaction is conductive carbon material, sodium thiosulfate, ferrous sulfate and elemental sulfur to be mixed in proportion obtain compound, place water heating kettle, add an amount of water, the mass ratio of described water and compound is 0.5～3.0.
4, preparation method according to claim 1 is characterized in that: described low-temperature hydrothermal product after filtering, water, dilute sulfuric acid, CS successively
2Wash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100118780A CN100470895C (en) | 2006-05-12 | 2006-05-12 | Method for preparing anode material of lithium-iron disulphide battery |
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| CNB2006100118780A CN100470895C (en) | 2006-05-12 | 2006-05-12 | Method for preparing anode material of lithium-iron disulphide battery |
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| CN1843941A CN1843941A (en) | 2006-10-11 |
| CN100470895C true CN100470895C (en) | 2009-03-18 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347404A (en) | 2007-09-28 | 2016-02-24 | 永备电池有限公司 | Processes for producing synthetic pyrite |
| CN102249347B (en) * | 2010-05-18 | 2013-04-10 | 中国科学院兰州化学物理研究所 | Preparation method of iron disulfide microspheres |
| CN102157736A (en) * | 2011-03-23 | 2011-08-17 | 中银（宁波）电池有限公司 | Ferrous disulfide/carbon composite cathode material of primary lithium battery and preparation method and application thereof |
| CN102509803A (en) * | 2011-11-04 | 2012-06-20 | 中山大学 | Preparation method of carbon-coated sulfur anode material of lithium sulfur secondary battery |
| CN102522542A (en) * | 2011-12-14 | 2012-06-27 | 上海交通大学 | Elemental sulfur composite material containing graphene and preparation method thereof |
| CN103073068B (en) * | 2013-01-24 | 2014-10-15 | 中国工程物理研究院电子工程研究所 | Method for synthesizing pyrite type ferrous disulfide by hydro-thermal method |
| US10581075B2 (en) | 2014-01-17 | 2020-03-03 | Greatbatch Ltd. | Method for providing a high capacity cathode material with improved rate capability performance |
| EP2897202B1 (en) * | 2014-01-17 | 2020-08-26 | Greatbatch Ltd. | Method to obtain a high capacity cathode material with improved discharge performance |
| CN107308956B (en) * | 2017-06-23 | 2019-05-17 | 哈尔滨工业大学 | A kind of preparation method of the efficient more iron sulfide of out-phase class fenton catalyst |
| CN113178555A (en) * | 2021-04-20 | 2021-07-27 | 中国航发北京航空材料研究院 | Preparation method of iron disulfide cathode composite material |
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2006
- 2006-05-12 CN CNB2006100118780A patent/CN100470895C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 高功率Li-FeS2电池的研制. 邓润荣等.电池工业，第10卷第1期. 2005 |
| 高功率Li-FeS2电池的研制. 邓润荣等.电池工业，第10卷第1期. 2005 * |
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