CN111446461A - 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 - Google Patents
一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 Download PDFInfo
- Publication number
- CN111446461A CN111446461A CN202010175142.7A CN202010175142A CN111446461A CN 111446461 A CN111446461 A CN 111446461A CN 202010175142 A CN202010175142 A CN 202010175142A CN 111446461 A CN111446461 A CN 111446461A
- Authority
- CN
- China
- Prior art keywords
- bipolar plate
- metal bipolar
- plate substrate
- graphene
- axial end
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 65
- 239000011248 coating agent Substances 0.000 title claims abstract description 38
- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 239000000446 fuel Substances 0.000 title claims abstract description 35
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- 230000007797 corrosion Effects 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 230000002378 acidificating effect Effects 0.000 title claims description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 121
- 239000002184 metal Substances 0.000 claims abstract description 121
- 239000000758 substrate Substances 0.000 claims abstract description 103
- 238000005507 spraying Methods 0.000 claims abstract description 75
- 239000000843 powder Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 5
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 229920002521 macromolecule Polymers 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 114
- 238000009434 installation Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract description 5
- 238000004381 surface treatment Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 17
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- -1 graphite alkene Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012799 electrically-conductive coating Substances 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0213—Gas-impermeable carbon-containing materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
- H01M8/0228—Composites in the form of layered or coated products
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010175142.7A CN111446461B (zh) | 2020-03-13 | 2020-03-13 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
PCT/CN2020/136863 WO2021179724A1 (zh) | 2020-03-13 | 2020-12-16 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010175142.7A CN111446461B (zh) | 2020-03-13 | 2020-03-13 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111446461A true CN111446461A (zh) | 2020-07-24 |
CN111446461B CN111446461B (zh) | 2021-05-28 |
Family
ID=71657405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010175142.7A Active CN111446461B (zh) | 2020-03-13 | 2020-03-13 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN111446461B (zh) |
WO (1) | WO2021179724A1 (zh) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111900426A (zh) * | 2020-07-29 | 2020-11-06 | 上海交通大学 | 一种燃料电池双极板防腐涂层及其制备方法 |
CN112310429A (zh) * | 2020-10-29 | 2021-02-02 | 上海交通大学 | 一种用于燃料电池双极板的耐蚀涂层及其制备方法 |
WO2021179724A1 (zh) * | 2020-03-13 | 2021-09-16 | 浙江华熔科技有限公司 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
CN115133046A (zh) * | 2022-07-11 | 2022-09-30 | 浙江海盐力源环保科技股份有限公司 | 一种燃料电池双极板涂层装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115612975B (zh) * | 2022-10-13 | 2024-09-27 | 四川美呀意斐医疗科技有限公司 | 一种钛合金超亲水处理方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009156348A (ja) * | 2007-12-26 | 2009-07-16 | Showa Corp | 油圧緩衝器 |
CN104766980A (zh) * | 2015-04-28 | 2015-07-08 | 安徽工业大学 | 一种酸性介质燃料电池双极板防护涂层及其制备方法 |
CN106337977A (zh) * | 2016-11-11 | 2017-01-18 | 大庆市盛日石油技术开发有限公司 | 一种石墨烯润滑耐磨防腐管及制备工艺 |
CN107364933A (zh) * | 2017-07-18 | 2017-11-21 | 王林双 | 石墨烯复合电极的制备工艺以及石墨烯复合电极及其应用 |
CN108199058A (zh) * | 2017-12-15 | 2018-06-22 | 中国第汽车股份有限公司 | 一种导电聚合物-石墨烯复合双极板的制备方法 |
CN108574107A (zh) * | 2018-03-16 | 2018-09-25 | 上海交通大学 | 改善燃料电池双极板碳化物涂层导电及耐蚀性的方法 |
CN109768295A (zh) * | 2018-12-11 | 2019-05-17 | 上海治臻新能源装备有限公司 | 耐腐蚀高电导率燃料电池金属双极板的生产方法 |
CN109904479A (zh) * | 2019-02-22 | 2019-06-18 | 佛山科学技术学院 | 一种复合耐腐燃料电池金属双极板及其制备方法 |
CN110808384A (zh) * | 2019-10-11 | 2020-02-18 | 浙江锋源氢能科技有限公司 | 一种金属双极板及其制备方法以及燃料电池 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007335147A (ja) * | 2006-06-13 | 2007-12-27 | Toppan Printing Co Ltd | 車両 |
DE102014016186A1 (de) * | 2014-11-03 | 2016-05-04 | Forschungszentrum Jülich GmbH | Bipolarplatte für elektrochemische Zellen sowie Verfahren zur Herstellung derselben |
CN111446461B (zh) * | 2020-03-13 | 2021-05-28 | 浙江华熔科技有限公司 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
-
2020
- 2020-03-13 CN CN202010175142.7A patent/CN111446461B/zh active Active
- 2020-12-16 WO PCT/CN2020/136863 patent/WO2021179724A1/zh active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009156348A (ja) * | 2007-12-26 | 2009-07-16 | Showa Corp | 油圧緩衝器 |
CN104766980A (zh) * | 2015-04-28 | 2015-07-08 | 安徽工业大学 | 一种酸性介质燃料电池双极板防护涂层及其制备方法 |
CN106337977A (zh) * | 2016-11-11 | 2017-01-18 | 大庆市盛日石油技术开发有限公司 | 一种石墨烯润滑耐磨防腐管及制备工艺 |
CN107364933A (zh) * | 2017-07-18 | 2017-11-21 | 王林双 | 石墨烯复合电极的制备工艺以及石墨烯复合电极及其应用 |
CN108199058A (zh) * | 2017-12-15 | 2018-06-22 | 中国第汽车股份有限公司 | 一种导电聚合物-石墨烯复合双极板的制备方法 |
CN108574107A (zh) * | 2018-03-16 | 2018-09-25 | 上海交通大学 | 改善燃料电池双极板碳化物涂层导电及耐蚀性的方法 |
CN109768295A (zh) * | 2018-12-11 | 2019-05-17 | 上海治臻新能源装备有限公司 | 耐腐蚀高电导率燃料电池金属双极板的生产方法 |
CN109904479A (zh) * | 2019-02-22 | 2019-06-18 | 佛山科学技术学院 | 一种复合耐腐燃料电池金属双极板及其制备方法 |
CN110808384A (zh) * | 2019-10-11 | 2020-02-18 | 浙江锋源氢能科技有限公司 | 一种金属双极板及其制备方法以及燃料电池 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021179724A1 (zh) * | 2020-03-13 | 2021-09-16 | 浙江华熔科技有限公司 | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 |
CN111900426A (zh) * | 2020-07-29 | 2020-11-06 | 上海交通大学 | 一种燃料电池双极板防腐涂层及其制备方法 |
CN111900426B (zh) * | 2020-07-29 | 2022-03-15 | 上海交通大学 | 一种燃料电池双极板防腐涂层及其制备方法 |
CN112310429A (zh) * | 2020-10-29 | 2021-02-02 | 上海交通大学 | 一种用于燃料电池双极板的耐蚀涂层及其制备方法 |
CN112310429B (zh) * | 2020-10-29 | 2022-09-16 | 上海交通大学 | 一种用于燃料电池双极板的耐蚀涂层及其制备方法 |
CN115133046A (zh) * | 2022-07-11 | 2022-09-30 | 浙江海盐力源环保科技股份有限公司 | 一种燃料电池双极板涂层装置 |
CN115133046B (zh) * | 2022-07-11 | 2023-05-23 | 浙江海盐力源环保科技股份有限公司 | 一种燃料电池双极板涂层装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2021179724A1 (zh) | 2021-09-16 |
CN111446461B (zh) | 2021-05-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111446461B (zh) | 一种抗燃料电池中酸性介质腐蚀的石墨烯涂层制备方法 | |
CN100595951C (zh) | 一种燃料电池用双极板及其表面碳铬薄膜制备方法 | |
TW202030920A (zh) | 電解銅箔、電極及包含其之鋰離子二次電池 | |
CN111490277A (zh) | 中温质子交换膜燃料电池膜电极及其制备方法 | |
CN109768298B (zh) | 质子交换膜燃料电池 | |
CN102130341A (zh) | 一种燃料电池双极板及其表面碳钛纳米复合薄膜制备方法 | |
CN101719565A (zh) | 一种三维双极型高功率铅蓄电池 | |
CN113224364A (zh) | 一种熔融碳酸盐燃料电池堆立式组装装置及方法 | |
CN115029663A (zh) | 金属极板复合涂层、金属极板及其制备方法和燃料电池 | |
CN1653639A (zh) | 用于使燃料电池部件脱离压合夹具的装置和方法 | |
CN100463752C (zh) | 一种不锈钢双极板焊接方法 | |
CN111463447B (zh) | 一种层叠式单极板及其制备方法、包含其的层叠式双极板及应用 | |
CN110718699A (zh) | 用于燃料电池不锈钢双极板金属氮化物涂层的制备方法 | |
KR101148674B1 (ko) | 막 전극 접합체 및 가스확산층 상호 간의 적층 정밀도 향상을 통해 개선된 품질을 갖는 연료전지 제조 장치 및 그 제조 방법 | |
CN113025980A (zh) | 一种燃料电池双极板用耐腐蚀膜层及其制备方法 | |
EP4075586A1 (en) | Method and device for flattening fuel cell proton exchange membrane | |
CN108023106A (zh) | 钒电池用双极板及其制备方法 | |
CN113871626B (zh) | 一种二次电池双极集流体及其制造工艺 | |
CN110797550B (zh) | 一种氢燃料电池复合板的点胶方法 | |
CN203288692U (zh) | 一种燃料电池双极板 | |
CN112221892A (zh) | 一种新型金属双极板表面改性的方法 | |
CN112952131B (zh) | 一种具有纳米晶AlN改性层的Fe-Mn基合金双极板及其制备方法 | |
CN112952129B (zh) | 一种具有纳米TaNbN改性层的金属双极板及其制备方法 | |
CN211907583U (zh) | 金属基复合双极板 | |
CN201616490U (zh) | 一种三维双极型高功率铅蓄电池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method of graphene coating resistant to acid medium corrosion in fuel cell Effective date of registration: 20230220 Granted publication date: 20210528 Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: Zhejiang Huarong Technology Co.,Ltd. Registration number: Y2023980032909 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210528 Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: Zhejiang Huarong Technology Co.,Ltd. Registration number: Y2023980032909 |