CN108928815A - 一种用多步骤弱氧化-还原法制备高性能石墨烯的方法 - Google Patents
一种用多步骤弱氧化-还原法制备高性能石墨烯的方法 Download PDFInfo
- Publication number
- CN108928815A CN108928815A CN201811051482.8A CN201811051482A CN108928815A CN 108928815 A CN108928815 A CN 108928815A CN 201811051482 A CN201811051482 A CN 201811051482A CN 108928815 A CN108928815 A CN 108928815A
- Authority
- CN
- China
- Prior art keywords
- graphene
- solution
- processing
- weak
- weak oxide
- 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 149
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 61
- 239000000243 solution Substances 0.000 claims abstract description 56
- 239000011259 mixed solution Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 31
- 238000002360 preparation method Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 20
- 239000010439 graphite Substances 0.000 claims abstract description 20
- 238000000498 ball milling Methods 0.000 claims abstract description 19
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- 239000007800 oxidant agent Substances 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 16
- 230000001590 oxidative effect Effects 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 15
- 238000007654 immersion Methods 0.000 claims abstract description 14
- 238000009830 intercalation Methods 0.000 claims abstract description 14
- 230000002687 intercalation Effects 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 12
- 239000000138 intercalating agent Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 8
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 7
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 6
- 239000005711 Benzoic acid Substances 0.000 claims description 4
- 235000010233 benzoic acid Nutrition 0.000 claims description 4
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000006071 cream Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000001069 Raman spectroscopy Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910003472 fullerene Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000004630 atomic force microscopy Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
- C01B32/19—Preparation by exfoliation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/04—Specific amount of layers or specific thickness
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/22—Electronic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/24—Thermal properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/30—Purity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2204/00—Structure or properties of graphene
- C01B2204/20—Graphene characterized by its properties
- C01B2204/32—Size or surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811051482.8A CN108928815B (zh) | 2018-09-10 | 2018-09-10 | 一种用多步骤弱氧化-还原法制备高性能石墨烯的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811051482.8A CN108928815B (zh) | 2018-09-10 | 2018-09-10 | 一种用多步骤弱氧化-还原法制备高性能石墨烯的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108928815A true CN108928815A (zh) | 2018-12-04 |
CN108928815B CN108928815B (zh) | 2020-04-03 |
Family
ID=64443715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811051482.8A Active CN108928815B (zh) | 2018-09-10 | 2018-09-10 | 一种用多步骤弱氧化-还原法制备高性能石墨烯的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108928815B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110753480A (zh) * | 2019-10-29 | 2020-02-04 | Oppo广东移动通信有限公司 | 散热片及其制备方法和电子设备 |
CN114074937A (zh) * | 2020-08-19 | 2022-02-22 | 山东海科创新研究院有限公司 | 一种薄层低缺陷微纳米级石墨烯及其制备方法 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040033189A1 (en) * | 2002-08-15 | 2004-02-19 | Graftech Inc. | Graphite intercalation and exfoliation process |
CN102431998A (zh) * | 2011-09-20 | 2012-05-02 | 深圳市长宜景鑫投资有限公司 | 化学法插层剥离石墨大量制备高质量石墨烯的方法 |
CN102452649A (zh) * | 2010-10-18 | 2012-05-16 | 中国科学院宁波材料技术与工程研究所 | 一种石墨烯的制备方法 |
CN103910354A (zh) * | 2014-03-25 | 2014-07-09 | 复旦大学 | 一种规模化水相制备石墨烯的方法 |
CN104556018A (zh) * | 2015-01-23 | 2015-04-29 | 青岛科技大学 | 一种高质量石墨烯导电膜的制备方法 |
WO2015189335A1 (en) * | 2014-06-12 | 2015-12-17 | Centre National De La Recherche Scientifique - Cnrs - | Aqueous and organic suspensions of exfoliated nanocarbon materials, method for making same and uses thereof |
CN105293476A (zh) * | 2015-11-16 | 2016-02-03 | 复旦大学 | 一种大尺寸氧化石墨烯或石墨烯的制备方法 |
CN105752977A (zh) * | 2016-04-29 | 2016-07-13 | 江苏超电新能源科技发展有限公司 | 一种高导电性石墨烯粉体的制备技术方法 |
WO2017162155A1 (zh) * | 2016-03-22 | 2017-09-28 | 中国科学院金属研究所 | 一种连续化制备氧化石墨烯微片的方法 |
CN108117057A (zh) * | 2016-11-30 | 2018-06-05 | 比亚迪股份有限公司 | 一种氮掺杂石墨烯聚集体及其制备方法和应用 |
-
2018
- 2018-09-10 CN CN201811051482.8A patent/CN108928815B/zh active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040033189A1 (en) * | 2002-08-15 | 2004-02-19 | Graftech Inc. | Graphite intercalation and exfoliation process |
CN102452649A (zh) * | 2010-10-18 | 2012-05-16 | 中国科学院宁波材料技术与工程研究所 | 一种石墨烯的制备方法 |
CN102431998A (zh) * | 2011-09-20 | 2012-05-02 | 深圳市长宜景鑫投资有限公司 | 化学法插层剥离石墨大量制备高质量石墨烯的方法 |
CN103910354A (zh) * | 2014-03-25 | 2014-07-09 | 复旦大学 | 一种规模化水相制备石墨烯的方法 |
WO2015189335A1 (en) * | 2014-06-12 | 2015-12-17 | Centre National De La Recherche Scientifique - Cnrs - | Aqueous and organic suspensions of exfoliated nanocarbon materials, method for making same and uses thereof |
CN104556018A (zh) * | 2015-01-23 | 2015-04-29 | 青岛科技大学 | 一种高质量石墨烯导电膜的制备方法 |
CN105293476A (zh) * | 2015-11-16 | 2016-02-03 | 复旦大学 | 一种大尺寸氧化石墨烯或石墨烯的制备方法 |
WO2017162155A1 (zh) * | 2016-03-22 | 2017-09-28 | 中国科学院金属研究所 | 一种连续化制备氧化石墨烯微片的方法 |
CN105752977A (zh) * | 2016-04-29 | 2016-07-13 | 江苏超电新能源科技发展有限公司 | 一种高导电性石墨烯粉体的制备技术方法 |
CN108117057A (zh) * | 2016-11-30 | 2018-06-05 | 比亚迪股份有限公司 | 一种氮掺杂石墨烯聚集体及其制备方法和应用 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110753480A (zh) * | 2019-10-29 | 2020-02-04 | Oppo广东移动通信有限公司 | 散热片及其制备方法和电子设备 |
CN110753480B (zh) * | 2019-10-29 | 2021-01-12 | Oppo广东移动通信有限公司 | 散热片及其制备方法和电子设备 |
CN114074937A (zh) * | 2020-08-19 | 2022-02-22 | 山东海科创新研究院有限公司 | 一种薄层低缺陷微纳米级石墨烯及其制备方法 |
CN114074937B (zh) * | 2020-08-19 | 2023-09-05 | 山东海科创新研究院有限公司 | 一种薄层低缺陷微纳米级石墨烯及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN108928815B (zh) | 2020-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104538597B (zh) | 雪花状二氧化钛/二维纳米碳化钛复合材料的制备方法 | |
Kabir et al. | Influence of calcination on the sol–gel synthesis of lanthanum oxide nanoparticles | |
CN102716734B (zh) | 一种氧化铈/氧化石墨烯纳米复合材料的制备方法 | |
CN104944410A (zh) | 一种合成钴纳米粒子与竹节状氮掺杂碳纳米管复合材料的方法 | |
CN104815637A (zh) | 水热法制备石墨烯负载花状二氧化钛复合材料的方法 | |
CN106082313A (zh) | 棒状二氧化锡/二维纳米碳化钛复合材料的制备方法 | |
CN102786045A (zh) | 一种氧化石墨烯的制备方法 | |
CN106047290A (zh) | 一种纳米四氧化三铁磁性粒子均匀包覆碳纳米管的方法 | |
CN106475100A (zh) | 石墨烯/四氧化三铁磁性纳米复合材料的制备方法及应用 | |
CN105032397A (zh) | 一种利用淀粉自蔓延燃烧合成钒酸铋光催化剂的方法 | |
CN108928815A (zh) | 一种用多步骤弱氧化-还原法制备高性能石墨烯的方法 | |
CN109665525B (zh) | 一种“哑铃型”铁氮双掺杂多孔碳的制备方法 | |
CN110698903A (zh) | 一种用于水性电磁屏蔽涂料的三维石墨烯/碳纳米管复合材料的制备方法 | |
CN100443402C (zh) | 制备高分散短碳纳米管的化学剪切方法 | |
CN105923625A (zh) | 一种石墨烯负载均匀单一氧化物量子点的制备方法 | |
CN106925312A (zh) | 一种碳化钼掺杂线性聚合物修饰石墨烯复合材料及其制备方法 | |
CN103432973B (zh) | 一种石墨烯-三氧化二铁纳米颗粒复合材料的制备方法 | |
CN105562040A (zh) | 一种BiOCl-(001)/GO纳米复合光催化剂的制备及应用 | |
Yang et al. | Synthesis of CuO nanoparticles for catalytic application via ultrasound-assisted ball milling | |
CN109326790A (zh) | 一种一维纳米线状钛酸钠及其制备方法和应用 | |
CN100480179C (zh) | 多壁碳纳米管的剪切方法 | |
CN106564881A (zh) | 一步法制备还原氧化石墨烯 | |
CN1254337C (zh) | 一种纳米级超细镍铁合金粉的制备方法 | |
CN110534759A (zh) | 一种燃料电池用Fe-N-C非贵金属催化剂及其制备方法 | |
CN105060272B (zh) | 一种以卤虫卵壳作为碳源低温下制备碳纳米管的方法 |
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 | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20200313 Address after: 519090 block a, building A4, factory building, Zhuhai Jintian Industry Co., Ltd., No. 6, Honghui Road, Shuanglin District, LIANGANG Industrial Zone, Hongqi Town, Jinwan District, Zhuhai City, Guangdong Province Applicant after: Mingderun and new materials (Zhuhai) Co.,Ltd. Address before: 611700 Chuangke Park, 266 Piwen Road, Pidu District, Chengdu City, Sichuan Province Applicant before: CHENGDU ZIYUAN HUAGUANG NEW MATERIAL TECHNOLOGY Co.,Ltd. |
|
TA01 | Transfer of patent application right | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210713 Address after: 519045 1st floor, building 3, factory building 7, Honghui 5th Road, Shuanglin District, LIANGANG Industrial Zone, Jinwan District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Heze Technology Co.,Ltd. Address before: 519090 area a, building A4, Zhuhai Jintian Industrial Co., Ltd., No. 6, Honghui Road, Shuanglin District, LIANGANG Industrial Zone, Hongqi Town, Jinwan District, Zhuhai City, Guangdong Province Patentee before: Mingderun and new materials (Zhuhai) Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230113 Address after: No. 4-2, Keda 6th Road, Balitai Town, Jinnan District, Tianjin, 300356 Patentee after: Mingderunhe machinery manufacturing (Tianjin) Co.,Ltd. Address before: 519045 1st floor, building 3, factory building 7, Honghui 5th Road, Shuanglin District, LIANGANG Industrial Zone, Jinwan District, Zhuhai City, Guangdong Province Patentee before: Zhuhai Heze Technology Co.,Ltd. |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for preparing high-performance Graphene by multi-step weak oxidation reduction method Effective date of registration: 20230601 Granted publication date: 20200403 Pledgee: Weihai commercial bank Limited by Share Ltd. Tianjin branch Pledgor: Mingderunhe machinery manufacturing (Tianjin) Co.,Ltd. Registration number: Y2023120000025 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |