CN104299777A - Multilayer ceramic capacitor based on graphene inner electrode layers - Google Patents
Multilayer ceramic capacitor based on graphene inner electrode layers Download PDFInfo
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- CN104299777A CN104299777A CN201410589674.XA CN201410589674A CN104299777A CN 104299777 A CN104299777 A CN 104299777A CN 201410589674 A CN201410589674 A CN 201410589674A CN 104299777 A CN104299777 A CN 104299777A
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Abstract
The invention relates to a multilayer ceramic capacitor based on graphene inner electrode layers. The multilayer ceramic capacitor comprises multilayer inner electrode layers and dielectric layers, wherein the inner electrode layers and the dielectric layers are alternately overlaid. Each inner electrode layer is composed of graphene or a composite structure film made of the graphene and nanometer conducting materials. Each dielectric layer is composed of a sintering ceramic body. The thickness of each inner electrode layer ranges from 1nm to 500nm. The inner electrode layers are manufactured through a printing or ink jetting or coating or transferring method. The inner electrode layers are excellent in conducting performance, and the capacitance of the multilayer ceramic capacitor with a small size is greatly increased.
Description
Technical field
The present invention relates to a kind of multilayer ceramic capacitor, particularly can realize a kind of multilayer ceramic capacitor based on Graphene inner electrode layer of high-capacitance while reducing capacitor sizes.
Background technology
Multilayer ceramic capacitor (MLCC) is alternately superposed and a kind of cascade capacitor sintered by multilayer inner electrode layer and dielectric layer.The capacitance calculation formula of multilayer ceramic capacitor is as follows: C=K × [(S × n)/t], and wherein, C is capacitance, and K is dielectric constant, and n is the dielectric layer number of plies, and S is electrode relative area, and t is medium thickness.From formula, the dielectric number of plies is more, and the capacitance of capacitor is larger; Electrode relative area is larger, and the capacitance of capacitor is larger.Conventional multilayer ceramic capacitor has little, the withstand voltage advantages of higher of volume, but its capacitance is general all less.And traditional MLCC is using precious metals pd-Ag alloy or pure Pd as interior electrode, and Pd is a kind of rare metal, and price is very expensive.Along with the increase of the ceramic dielectric number of plies, the number of plies also corresponding increase of interior electrode, thus electrode material account for sizable proportion in MLCC product cost.Utilize base metal, such as Ni etc. replace precious metals pd-Ag alloy to be the advantageous measures reduced costs as interior electrode.But also there is certain difficulty in the making of base-metal inner-electrode MLCC.On the one hand, easily oxidized and lose electric conductivity when electrode MLCC sinters in atmosphere in Ni etc., within institute, electrode MLCC must sinter in reducing atmosphere, adds manufacture difficulty.On the other hand, the dielectric containing titanium oxide sinter in reducing atmosphere volatile support and semiconductor transformation, cause decreasing insulating and scrap, thus resistance to reduction requirement being proposed to dielectric material.
The development of integrated circuit proposes new demand to MLCC, and while requiring that size is more and more less, capacitance is larger.Therefore the thin layer of interior electrode of MLCC device is inevitable, and adopting thinner electrode material to substitute original metallic particles is trend of the times.Graphene is a kind of by the tightly packed two dimensional crystal formed of carbon atom.It is the material that mankind's known strength is the highest, toughness is best, weight is the lightest, conductivity is splendid, and thus Graphene can be applied to the preparation of electrode material.Because Graphene is two-dimension single layer sake, using Graphene or graphene composite material as electrode in multilayer ceramic capacitor, can under same size, increase the lamination quantity of capacitor and electric capacity be increased, thus the requirement of high capacitance ability under realizing small size, meanwhile, Graphene electrodes can avoid the problem that metal electrode Atom spreads to dielectric layer.
Summary of the invention
The object of the present invention is to provide a kind of cost low and greatly increase a kind of multilayer ceramic capacitor based on Graphene inner electrode layer of the capacitance of multilayer ceramic capacitor under small size.
For achieving the above object, technical scheme of the present invention is: a kind of multilayer ceramic capacitor based on Graphene inner electrode layer, comprises inner electrode layer and dielectric layer that multilayer replaces superposition; Described inner electrode layer is made up of the compound structure film of Graphene or Graphene and nanometer conductive material, and described dielectric layer is made up of sintered ceramic body.
In embodiments of the present invention, the Thickness scope of described inner electrode layer is 1nm-500nm.
In embodiments of the present invention, described inner electrode layer is prepared by the method for printing, ink-jet, coating or transfer.
In embodiments of the present invention, described nanometer conductive material is monodimension nanometer material or two-dimension nano materials; Described monodimension nanometer material is carbon nano-tube or metal nanometer line; Described two-dimension nano materials is MoS
2, MoSe
2, MoTe
2, PbS, GaS, GaSe or GaTe.
Compared to prior art, the present invention has following beneficial effect: the present invention is by adopting the compound structure film of Graphene and Graphene and nanometer conductive material as inner electrode layer, considerably increase the capacitance of multilayer ceramic capacitor under small size, and the excellent intensity of grapheme material, toughness also improve the useful life of multilayer ceramic capacitor; Both can reduce the thickness of electrode layer, the electric capacity of cascade capacitor can have been improved again; And adopt the compound structure film of Graphene and Graphene and nanometer conductive material to substantially reduce the production cost of multilayer ceramic capacitor as inner electrode layer.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
A kind of multilayer ceramic capacitor based on Graphene inner electrode layer of the present invention, comprises inner electrode layer and dielectric layer that multilayer replaces superposition; Described inner electrode layer is made up of the compound structure film of Graphene or Graphene and nanometer conductive material, and described dielectric layer is made up of sintered ceramic body.
The Thickness scope of described inner electrode layer is 1nm-500nm, and preferably the thickness of this inner electrode layer can be controlled in 1nm, 5nm, 10nm, 20nm, 30nm, 50nm, 80nm.
Described inner electrode layer is prepared by the method for printing, ink-jet, coating or transfer.
Described nanometer conductive material is monodimension nanometer material or two-dimension nano materials; Described monodimension nanometer material is carbon nano-tube or metal nanometer line; Described two-dimension nano materials is MoS
2, MoSe
2, MoTe
2, PbS, GaS, GaSe or GaTe.
Below for the present invention is based on an example structure of the multilayer ceramic capacitor of Graphene inner electrode layer, as shown in Figure 1, in the present embodiment, this multi-layer capacitor has 12 layers of inner electrode layer, 11 layers of ceramic dielectric layer, and external electrode, the alternately superposition of inner electrode layer and dielectric layer.Inner electrode layer is connected with external electrode with negative plate respectively as positive plate.Such as: be ceramic dielectric layer 11 between inner electrode layer 01 and inner electrode layer 02, be ceramic dielectric layer 12 between inner electrode layer 02 and inner electrode layer 03, inner electrode layer 01 connects external electrode 21, and inner electrode layer 02 connects external electrode 22.Wherein, external electrode 21 is positive electrodes, and external electrode 22 is negative electrodes.Or external electrode 21 is negative electrodes, external electrode 22 is positive electrodes.
Situation for other inner electrode layer unaccounted in figure, dielectric layer is similar to above-mentioned explanation, does not describe doing more.Similar to above-mentioned explanation with the situation of dielectric layer with the inner electrode layer of the cascade capacitor of dielectric layer for having more multi-layered inner electrode layer, much more no longer to describe.
The present invention is by adopting the compound structure film of Graphene and Graphene and nanometer conductive material as inner electrode layer, considerably increase the capacitance of multilayer ceramic capacitor under small size, and the excellent intensity of grapheme material, toughness also improve the useful life of multilayer ceramic capacitor.Both can reduce the thickness of electrode layer, the electric capacity of cascade capacitor can have been improved again; And adopt the compound structure film of Graphene and Graphene and nanometer conductive material to substantially reduce the production cost of multilayer ceramic capacitor as inner electrode layer.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (4)
1., based on a multilayer ceramic capacitor for Graphene inner electrode layer, comprise inner electrode layer and dielectric layer that multilayer replaces superposition; It is characterized in that: described inner electrode layer is made up of the compound structure film of Graphene or Graphene and nanometer conductive material, and described dielectric layer is made up of sintered ceramic body.
2. a kind of multilayer ceramic capacitor based on Graphene inner electrode layer according to claim 1, is characterized in that: the Thickness scope of described inner electrode layer is 1nm-500nm.
3. a kind of multilayer ceramic capacitor based on Graphene inner electrode layer according to claim 1, is characterized in that: described inner electrode layer is prepared by the method for printing, ink-jet, coating or transfer.
4. a kind of multilayer ceramic capacitor based on Graphene inner electrode layer according to claim 1, is characterized in that: described nanometer conductive material is monodimension nanometer material or two-dimension nano materials; Described monodimension nanometer material is carbon nano-tube or metal nanometer line; Described two-dimension nano materials is MoS
2, MoSe
2, MoTe
2, PbS, GaS, GaSe or GaTe.
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| CN201410589674.XA CN104299777A (en) | 2014-10-29 | 2014-10-29 | Multilayer ceramic capacitor based on graphene inner electrode layers |
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| CN201410589674.XA CN104299777A (en) | 2014-10-29 | 2014-10-29 | Multilayer ceramic capacitor based on graphene inner electrode layers |
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| CN104299777A true CN104299777A (en) | 2015-01-21 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242334A (en) * | 2015-10-27 | 2016-01-13 | 中国科学院宁波材料技术与工程研究所 | Multilayer metal ceramic thin film having wide-spectrum ultrafast nonlinear optical response performance and preparation method thereof |
| CN107154377A (en) * | 2016-03-03 | 2017-09-12 | 北京华卓精科科技股份有限公司 | The electrostatic chuck apparatus of Graphene electrodes |
| CN108140495A (en) * | 2015-08-03 | 2018-06-08 | 美商新思科技有限公司 | 2D material ultracapacitors |
| TWI626669B (en) * | 2017-05-22 | 2018-06-11 | 中華精測科技股份有限公司 | Thin film capacitor and manufacturing method thereof |
| CN108172397A (en) * | 2017-11-28 | 2018-06-15 | 国巨电子（中国）有限公司 | A kind of patch capacitor structure and its method for testing performance |
| CN110911165A (en) * | 2018-09-18 | 2020-03-24 | 三星电机株式会社 | Conductive powder for internal electrode and capacitor assembly |
| CN113412525A (en) * | 2019-02-27 | 2021-09-17 | 京瓷株式会社 | Laminated ceramic electronic component |
| CN114974895A (en) * | 2022-06-30 | 2022-08-30 | 天津市哈德布莱特科技发展有限公司 | MLCC and SLC-based multilayer ceramic binary capacitor and capacitor adjusting method |
-
2014
- 2014-10-29 CN CN201410589674.XA patent/CN104299777A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10504988B2 (en) | 2015-08-03 | 2019-12-10 | Synopsys, Inc. | 2D material super capacitors |
| CN108140495A (en) * | 2015-08-03 | 2018-06-08 | 美商新思科技有限公司 | 2D material ultracapacitors |
| CN105242334A (en) * | 2015-10-27 | 2016-01-13 | 中国科学院宁波材料技术与工程研究所 | Multilayer metal ceramic thin film having wide-spectrum ultrafast nonlinear optical response performance and preparation method thereof |
| CN105242334B (en) * | 2015-10-27 | 2018-06-05 | 中国科学院宁波材料技术与工程研究所 | A kind of multi-layer cermet film of wide range ultra-fast nonlinear optical response performance and preparation method thereof |
| CN107154377A (en) * | 2016-03-03 | 2017-09-12 | 北京华卓精科科技股份有限公司 | The electrostatic chuck apparatus of Graphene electrodes |
| TWI626669B (en) * | 2017-05-22 | 2018-06-11 | 中華精測科技股份有限公司 | Thin film capacitor and manufacturing method thereof |
| CN108172397A (en) * | 2017-11-28 | 2018-06-15 | 国巨电子（中国）有限公司 | A kind of patch capacitor structure and its method for testing performance |
| CN108172397B (en) * | 2017-11-28 | 2024-01-30 | 国巨电子（中国）有限公司 | Patch capacitor structure and performance detection method thereof |
| CN110911165B (en) * | 2018-09-18 | 2022-09-20 | 三星电机株式会社 | Conductive powder for internal electrode and capacitor assembly |
| CN110911165A (en) * | 2018-09-18 | 2020-03-24 | 三星电机株式会社 | Conductive powder for internal electrode and capacitor assembly |
| US11594371B2 (en) | 2018-09-18 | 2023-02-28 | Samsung Electro-Mechanics Co., Ltd. | Conductive powder for internal electrode and capacitor component including the same |
| CN113412525B (en) * | 2019-02-27 | 2022-11-08 | 京瓷株式会社 | Laminated ceramic electronic component |
| CN113412525A (en) * | 2019-02-27 | 2021-09-17 | 京瓷株式会社 | Laminated ceramic electronic component |
| CN114974895A (en) * | 2022-06-30 | 2022-08-30 | 天津市哈德布莱特科技发展有限公司 | MLCC and SLC-based multilayer ceramic binary capacitor and capacitor adjusting method |
| CN114974895B (en) * | 2022-06-30 | 2024-01-23 | 天津市哈德布莱特科技发展有限公司 | Multilayer ceramic binary capacitor based on MLCC and SLC and capacitor adjusting method |
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