CN206893730U - A kind of cladded type fire retardant - Google Patents
A kind of cladded type fire retardant Download PDFInfo
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- CN206893730U CN206893730U CN201720451256.3U CN201720451256U CN206893730U CN 206893730 U CN206893730 U CN 206893730U CN 201720451256 U CN201720451256 U CN 201720451256U CN 206893730 U CN206893730 U CN 206893730U
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- retardant
- coating
- fire
- fire retardant
- cladded type
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- 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
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Abstract
The utility model provides a kind of cladded type fire retardant, including fire-retardant powder, and the fire-retardant powder Surface coating has the organic coating of molecular-layer deposition or/and the inorganic coating of ald.The cladded type fire retardant passes through in fire-retardant powder Surface coating organic coating or/and inorganic coating, effectively the organic electrolyte of fire retardant and battery, positive pole, negative pole are isolated, avoid the directly side reaction caused by contact of fire-retardant powder and organic electrolyte, positive pole, negative pole so that fire retardant do not interfere with itself flame retardant effect and lithium battery cycle life.
Description
Technical field
The utility model belongs to additives for battery technical field, and in particular to a kind of cladded type fire retardant.
Background technology
Lithium ion battery has the advantages that high-energy-density, high open circuit voltage, memory-less effect, low self-discharge, extensively should
For consumption electronic product, military use product, aeronautical product etc..However, the safety problem of lithium ion battery is its large-scale application
Primary problems faced, especially in electric automobile, hybrid vehicle etc..Lithium ion battery overcharge, overheat, pierce through,
It can trigger thermal runaway under the conditions of extruding etc., cause burning or even explode.This is due to that current lithium ion battery commonly uses flammable carbon
Acid esters is as electrolyte.And the existing most economical method for effectively improving lithium ion battery security is using fire retardant as addition
Agent or cosolvent are added in electrolyte.
Study more for organic phosphorus flame retardant, organic halogenated flame retardant and composite flame-retardant agent etc., be added at present
In conventional electrolysis liquid, inflammable organic electrolyte can be made to become fire retardant or non-ignitable.Such as：KangXu etc. by trimethyl phosphate and
Triethyl phosphate is added to 1.0M LiPF as flame-retardant additive6In-EC+EMC electrolyte, when addition is 40%, electricity
Solution liquid self-extinguishing time (SET) be greatly reduced (XuK, DingMS, ZhangS,
etal.Anattempttoformulatenonflammable
lithiumionelectrolyteswithalkylphosphatesandphosphazenes[J]
.JournaloftheElectrochemical Society,2002,149(5):A622-A626.).H.F.Xiang etc. is by first
Base dimethyl phosphate is added to 1M LiPF as additive6In-EC+DEC electrolyte, when addition is 10%, electrolyte is
Incombustible (XiangHF, XuHY, Wang ZZ, etal.Dimethylmethylphosphonate (DMMP)
asanefficientflameretardantadditiveforthelithium-ionbatteryelectrolytes[J]
.JournalofPowerSources,2007,173(1):562-564.).These phosphoric acid esters have good anti-flammability, but
There is high viscosity mostly, high-solidification point is bad to the compatibility (especially negative pole) of electrode when addition is excessive, capacity attenuation compared with
It hurry up.For example, Chinese patent 200710052150.7 provides a kind of flame-retardant electrolyte additive of high-efficiency low-toxicity, using a kind of or
More than one phosphate (methyl-phosphoric acid dimethyl ester, ethyl phosphonic acid diethylester etc.) of person is used as neat solvent or solvent composition, can
Effectively to improve the security of lithium ion battery, but it is bad with the compatibility of negative material.
Therefore, it is necessary to design a kind of BACN, it can effectively avoid fire retardant and organic electrolyte, positive pole, negative pole straight
Contact causes side reaction, meanwhile, it can play good flame retardant effect when catching fire occurs for lithium battery.
Utility model content
The purpose of this utility model is to overcome the directly contact of existing fire-retardant powder and organic electrolyte, positive pole, negative pole to make
Into side reaction, the problem of influenceing flame retardant effect and battery normal discharge and recharge.
Therefore, the utility model embodiment provides a kind of cladded type fire retardant, including fire-retardant powder, the fire retardant
Powder Surface coating has the organic coating of molecular-layer deposition or/and the inorganic coating of ald.
Further, the organic coating is arranged between fire-retardant powder and inorganic coating.
Further, the organic coating material be polyimides, polyureas, polyamide, polyimide-amide, polyurethane,
Polythiourea, polyester or polyethylene glycol.
Further, the thickness of the organic coating is 1~25 nanometer.
Further, the inorganic coating material is aluminum oxide, hafnium oxide, yittrium oxide, zirconium oxide, titanium oxide, zinc oxide
Or silica.
Further, the thickness of the inorganic coating is 1~25 nanometer.
The beneficial effects of the utility model：This cladded type fire retardant provided by the utility model passes through in fire-retardant powder
Surface coating organic coating or/and inorganic coating, effectively the organic electrolyte of fire retardant and battery, positive pole, negative pole are isolated, kept away
Exempt from the directly side reaction caused by contact of fire-retardant powder and organic electrolyte, positive pole, negative pole, so that fire retardant does not interfere with
The flame retardant effect of itself and the cycle life of lithium battery.
The utility model is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of cladded type fire retardant in embodiment 1；
Fig. 2 is the structural representation of cladded type fire retardant in embodiment 2；
Fig. 3 is the structural representation of cladded type fire retardant in embodiment 3.
Description of reference numerals：1st, fire-retardant powder；2nd, organic coating；3rd, inorganic coating.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
Embodiment 1：
As shown in figure 1, a kind of cladded type fire retardant is present embodiments provided, including fire-retardant powder 1, the fire retardant powder
Last 1 Surface coating has the organic coating 2 of molecular-layer deposition.Wherein, the material of organic coating 2 be polyimides, polyureas, polyamide,
Polyimide-amide, polyurethane, polythiourea, polyester or polyethylene glycol.The thickness of organic coating 2 is 1~25 nanometer.
The preparation of cladded type fire retardant specifically comprises the following steps in the embodiment：
(a) species of organic coating 2 is deposited as needed, selects the first presoma of reaction, deposition process parameters are set：
25~400 DEG C of depositing temperature, deposition pressure are 0.01~500torr；First presoma is Adipoyl Chloride, Pyromellitic Acid two
Acid anhydride or PPDI.
(b) the first precursor vapor is incorporated into reative cell in the case where nitrogen or argon gas carry so that the first presoma steams
On fire-retardant powder surface, the retention time is 10~120 seconds for stripper chemical absorption.
(c) with nitrogen or argon gas purging reative cell, the second presoma is incorporated into reative cell in the case where nitrogen or argon gas carry
In, the second presoma and first forerunner's precursor reactant obtain organic coating, and the reaction time is 10~120 seconds；Second presoma is 1,
6- hexamethylene diamines, ethylenediamine, 1,10- diamino decanes or 1,4- dihydroxy -2- butine.
(d) with nitrogen or argon gas purging reative cell, excessive the second presoma and accessory substance are purged.
(e) repetitive process (b)~(d), until organic coating thickness needed for depositing to.
Embodiment 2：
As shown in Fig. 2 a kind of cladded type fire retardant is present embodiments provided, including fire-retardant powder 1, the fire retardant powder
Last 1 Surface coating has the inorganic coating 3 of ald.Wherein, the material of inorganic coating 3 be aluminum oxide, hafnium oxide, yittrium oxide,
Zirconium oxide, titanium oxide, zinc oxide or silica.The thickness of inorganic coating 3 is 1~25 nanometer.
The preparation of cladded type fire retardant specifically comprises the following steps in the implementation：
(a) species of deposition of inorganic coatings as needed, the presoma of reaction is selected, deposition process parameters are set：Deposition
Temperature is 25~400 DEG C, and deposition pressure is 0.01~500torr；Presoma is volatile metal alkylamino salt, metal is organic
One or more of mixtures in compound, halide, alkoxide, metal p-diketonates complex compound；Metal in the presoma
For the one or more in aluminium, hafnium, yttrium, zirconium, titanium, zinc, silicon.
(b) precursor vapor is incorporated into reative cell in the case where nitrogen or argon gas carry, the retention time is 10~120 seconds.
(c) with nitrogen or argon gas purging reative cell, oxygen source steam is incorporated into reative cell in the case where nitrogen or argon gas carry,
Retention time is 10~120 seconds, and oxygen source steam obtains inorganic coating with forerunner's precursor reactant；
(d) with nitrogen or argon gas purging reative cell, excessive oxygen source steam and accessory substance are purged.
(e) repetitive process (b)~(d), until inorganic coating thickness needed for depositing to.
Embodiment 3：
As shown in figure 3, a kind of cladded type fire retardant is present embodiments provided, including fire-retardant powder 1, the fire retardant powder
Last 1 Surface coating has the organic coating 2 of molecular-layer deposition and the inorganic coating 3 of ald.Wherein, the material of organic coating 2
For polyimides, polyureas, polyamide, polyimide-amide, polyurethane, polythiourea, polyester or polyethylene glycol, organic coating 2
Thickness is 1~25 nanometer；The material of inorganic coating 3 is aluminum oxide, hafnium oxide, yittrium oxide, zirconium oxide, titanium oxide, zinc oxide or oxygen
SiClx, the thickness of inorganic coating 3 is 1~25 nanometer.
Preferably, the organic coating 2 is arranged between fire-retardant powder 1 and inorganic coating 3, and inorganic coating 3 is set
In outer layer, the stable chemical performance of inorganic coating 3, it will not react with organic electrolyte, will not also be aoxidized by positive pole, or negative pole is also
It is former.The present embodiment sets two layers of coatings, can effectively avoid single coating expanded by heating from being bursting at the collision, discharge fire-retardant powder 1.
The preparation detailed process of cladded type fire retardant is as follows in the embodiment：The preparation process being first according in embodiment 1
Organic coating 2 is deposited on the surface of fire-retardant powder 1, the thickness of organic coating 2 of deposition is 1~25 nanometer；Then according still further to implementation 2
In preparation process have the surface deposition of inorganic coatings 3 of fire-retardant powder 1 of organic coating 2 in deposition, the inorganic coating 3 of deposition is thick
Spend for 1~25 nanometer.
In summary, this cladded type fire retardant provided by the utility model passes through organic in fire-retardant powder Surface coating
Coating or/and inorganic coating, effectively the organic electrolyte of fire retardant and battery, positive pole, negative pole are isolated, avoid fire-retardant powder
Side reaction caused by directly being contacted with organic electrolyte, positive pole, negative pole, so that fire retardant does not interfere with the fire-retardant effect of itself
Fruit and the cycle life of lithium battery.
Exemplified as above is only for example, not forming to the scope of protection of the utility model to of the present utility model
Limitation, it is every to be belonged to the same or analogous design of the utility model within the scope of protection of the utility model.
Claims (6)
- A kind of 1. cladded type fire retardant, it is characterised in that：Including fire-retardant powder (1), fire-retardant powder (1) Surface coating There are the organic coating (2) of molecular-layer deposition or/and the inorganic coating (3) of ald.
- 2. cladded type fire retardant as claimed in claim 1, it is characterised in that：The organic coating (2) is arranged on fire retardant powder Between last (1) and inorganic coating (3).
- 3. cladded type fire retardant as claimed in claim 1, it is characterised in that：Organic coating (2) material be polyimides, Polyureas, polyamide, polyimide-amide, polyurethane, polythiourea, polyester or polyethylene glycol.
- 4. cladded type fire retardant as claimed in claim 3, it is characterised in that：The thickness of the organic coating (2) is received for 1~25 Rice.
- 5. cladded type fire retardant as claimed in claim 1, it is characterised in that：Inorganic coating (3) material is aluminum oxide, oxygen Change hafnium, yittrium oxide, zirconium oxide, titanium oxide, zinc oxide or silica.
- 6. cladded type fire retardant as claimed in claim 1, it is characterised in that：The thickness of the inorganic coating (3) is received for 1~25 Rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720451256.3U CN206893730U (en) | 2017-04-27 | 2017-04-27 | A kind of cladded type fire retardant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720451256.3U CN206893730U (en) | 2017-04-27 | 2017-04-27 | A kind of cladded type fire retardant |
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| Publication Number | Publication Date |
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| CN206893730U true CN206893730U (en) | 2018-01-16 |
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ID=61325120
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| CN201720451256.3U Active CN206893730U (en) | 2017-04-27 | 2017-04-27 | A kind of cladded type fire retardant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018445A (en) * | 2020-07-17 | 2020-12-01 | 清华大学 | Self-destruction structure, electrolyte, electrode, diaphragm and battery |
-
2017
- 2017-04-27 CN CN201720451256.3U patent/CN206893730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018445A (en) * | 2020-07-17 | 2020-12-01 | 清华大学 | Self-destruction structure, electrolyte, electrode, diaphragm and battery |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210316 Address after: 402, building 2-03, optical core center, 303 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee after: ROUDIAN (WUHAN) TECHNOLOGY Co.,Ltd. Address before: 430000 Optics Valley road 303, Optics Valley New Technology Development Zone, Wuhan, Hubei. Room 302, 2-03 302, core center, Optics Valley. Patentee before: WUHAN AITEMIKE SUPER ENERGY NEW MATERIAL TECHNOLOGY Co.,Ltd. |