WO2020177460A1 - 三维覆碳多孔铝及其制备方法 - Google Patents

三维覆碳多孔铝及其制备方法 Download PDF

Info

Publication number
WO2020177460A1
WO2020177460A1 PCT/CN2019/128880 CN2019128880W WO2020177460A1 WO 2020177460 A1 WO2020177460 A1 WO 2020177460A1 CN 2019128880 W CN2019128880 W CN 2019128880W WO 2020177460 A1 WO2020177460 A1 WO 2020177460A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum
coated porous
carbon
porous aluminum
dimensional carbon
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.)
Ceased
Application number
PCT/CN2019/128880
Other languages
English (en)
French (fr)
Inventor
缪永华
张刚
杨智皋
骞伟中
金鹰
崔超婕
张抒婷
杨周飞
刘莎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Jiangsu Zhongtian Technology Co Ltd
Zhongtian Energy Storage Technology Co Ltd
Original Assignee
Tsinghua University
Jiangsu Zhongtian Technology Co Ltd
Zhongtian Energy Storage Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tsinghua University, Jiangsu Zhongtian Technology Co Ltd, Zhongtian Energy Storage Technology Co Ltd filed Critical Tsinghua University
Publication of WO2020177460A1 publication Critical patent/WO2020177460A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • 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

Definitions

  • the invention relates to the technical field of porous aluminum preparation, in particular to a three-dimensional carbon-coated porous aluminum and a preparation method thereof.
  • porous aluminum is widely used in industry, involving various electrical conductivity, heat dissipation, sound insulation applications and mechanical applications (such as buffering, weight reduction and strength support).
  • aluminum is prepared into porous film-like materials, which can be used as various The current collectors of electrochemical energy storage devices are of great value.
  • the method for preparing porous aluminum includes a method of depositing an aluminum layer on a porous polymer substrate and then removing the polymer, or bonding aluminum powder and sintering to obtain it. It can also be obtained by melting aluminum, introducing gas, and blowing.
  • the through-hole porous aluminum has the disadvantage of low mechanical strength due to its large porosity.
  • the porous aluminum when placed in the air, or even under the protection of inert gas, it is easy to form an oxide film on the surface, which makes it poorer in contact with the electrode material when used as an electrode fluid, and has high resistance, which is not conducive to Improve the power density of the device.
  • the purpose of the present invention is to provide a three-dimensional carbon-coated porous aluminum and a preparation method thereof, and its purpose is to overcome the disadvantages of poor mechanical strength and high contact resistance of porous aluminum films used in the field of electrochemical energy storage in the prior art.
  • a three-dimensional carbon-coated porous aluminum includes an aluminum basic body and a carbon layer covering the surface of the aluminum basic body.
  • the aluminum basic body is foamed aluminum formed by an aluminum wire skeleton and three-dimensional connected pores, and the carbon layer is continuously dense
  • the ground is coated on the surface of the aluminum basic body, and the thickness of the carbon layer is 0.34 nm-2 ⁇ m.
  • the aluminum basic body is a film-like material.
  • the diameter of the three-dimensional communicating hole is within 1 mm, and the aluminum wire skeleton is tens of microns in thickness.
  • the porosity of the aluminum basic body is 70-99.5%.
  • the time for complete dissolution of the three-dimensional carbon-coated porous aluminum with a 200% excess of 0.1 mol/L hydrochloric acid at 25° C. is greater than 30 hours.
  • the tensile strength of the three-dimensional carbon-coated porous aluminum is 0.3-3 MPa.
  • the three-dimensional carbon-coated porous aluminum is used to manufacture current collectors for electrochemical energy storage devices.
  • a preparation method of three-dimensional carbon-coated porous aluminum for preparing the above-mentioned three-dimensional carbon-coated porous aluminum includes the following steps:
  • S5 Charge between the cathode and the anode so that the surface power of the target material reaches 2-10W/cm2 and lasts for 1-24h to obtain three-dimensional carbon-coated porous aluminum.
  • the carbon source in S1 is graphite.
  • the internal temperature of the magnetron sputtering device is controlled between 25-50°C.
  • the three-dimensional carbon-coated porous aluminum includes an aluminum basic body and a carbon layer coated on the surface of the aluminum basic body.
  • the aluminum basic body is an aluminum wire skeleton and three-dimensional connected holes.
  • the carbon layer continuously and densely covers the surface of the aluminum base body, and the thickness of the carbon layer is 0.34 nm-2 ⁇ m.
  • Fig. 1 is a schematic flow chart of a method for preparing three-dimensional carbon-coated porous aluminum in an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the microstructure of three-dimensional carbon-coated porous aluminum in an embodiment of the present invention.
  • Fig. 3 is a further enlarged microstructure schematic diagram of the three-dimensional carbon-coated porous aluminum in Fig. 2.
  • the object of the present invention is to provide a method for preparing three-dimensional carbon-coated porous aluminum, which is used for the three-dimensional carbon-coated porous aluminum, which mainly includes the following steps:
  • the carbon source is graphite
  • the aluminum base material is thin film porous aluminum with a porosity of 99.5%.
  • the aluminum basic body material is a sponge-like material
  • the aluminum basic body material is foamed aluminum formed by an aluminum wire skeleton and three-dimensional connected holes
  • the aluminum wire skeleton on the aluminum basic body is only tens of microns. .
  • the carbon source is made into a plate as a target for deposition, and fixed on the cathode of the magnetron sputtering equipment.
  • graphite is made into a plate to form a graphite target and fixed on the cathode of the magnetron sputtering device.
  • the inert gas is argon
  • the absolute pressure inside the magnetron sputtering device is 5 Pa.
  • the three-dimensional carbon-coated porous aluminum includes an aluminum basic body and a carbon layer covering the surface of the aluminum basic body, and the carbon layer continuously and densely covers the surface of the aluminum basic body.
  • the aluminum basic body is a film-like material
  • the interface resistance of the aluminum basic body is 0.1 ⁇ cm 2
  • its oxidation resistance voltage can reach 5.2V.
  • the three-dimensional carbon-coated porous aluminum can be used to prepare a porous energy collector of an electrochemical energy storage device.
  • the electrochemical energy storage device refers to an electric double layer capacitor.
  • the contact resistance of the three-dimensional carbon-coated porous aluminum with the active material is reduced by 80% when the three-dimensional carbon-coated porous aluminum is used as a current collector.
  • the mechanical strength is increased by 80%, and the device power density is increased by 50%.
  • the time for the carbon layer to completely dissolve the aluminum base body with a 200% excess of 0.1 Mol/L hydrochloric acid at 25° C. is 30 hours.
  • This embodiment is basically the same as Embodiment 1, and the difference lies in that the aluminum base material is a film-like three-dimensional carbon-coated porous aluminum with a porosity of 70%.
  • the temperature of the argon atmosphere used is 40° C. and the absolute pressure is 3.5 Pa.
  • the surface power of the graphite target is 2W/cm2
  • the deposition time is 1h
  • the final carbon layer thickness is 0.34nm
  • the tensile strength is It is 0.3MPa three-dimensional carbon-coated porous aluminum.
  • the three-dimensional carbon-coated porous aluminum can be used to prepare the current collector of an electrochemical energy storage device.
  • the electrochemical energy storage device refers to a lithium ion battery.
  • the three-dimensional carbon-coated porous aluminum is used as a current collector, its interface resistance is 0.001 ⁇ cm 2 , and the oxidation resistance voltage can reach 4.8V.
  • the contact resistance between the collector formed by the three-dimensional carbon-coated porous aluminum and the active material is reduced by 50%.
  • the mechanical strength of the three-dimensional carbon-coated porous aluminum is increased by 20%, and the device power density is increased by 30%.
  • the aluminum base body covered by the carbon layer is completely dissolved by a 200% excess of 0.1 Mol/L hydrochloric acid at 25° C. for 50 hours.
  • Embodiment 1 This embodiment is basically the same as Embodiment 1 and Embodiment 2, with the difference that: the aluminum base material is a film-like three-dimensional carbon-coated porous aluminum with a porosity of 95%.
  • the temperature of the argon atmosphere used is 35° C. and the absolute pressure is 0.5 Pa.
  • the surface power of the graphite target is 5W/cm 2
  • the deposition time is 15h
  • the final carbon layer thickness is 1 ⁇ m
  • the tensile strength is It is 2MPa three-dimensional carbon-coated porous aluminum.
  • the three-dimensional carbon-coated porous aluminum can be used to prepare a current collector for electrochemical energy storage.
  • the three-dimensional carbon-coated porous aluminum is used as a current collector, its contact resistance with the active material is reduced by 10%, the interface resistance is 0.05 ⁇ cm 2 , and the oxidation resistance voltage can reach 4.5V.
  • the mechanical strength of the three-dimensional carbon-coated porous aluminum is increased by 60%, and the device power density is increased by 10%.
  • the carbon layer allows the covered aluminum base body to be completely dissolved by a 200% excess of 0.1 Mol/L hydrochloric acid at 25° C. for 45 hours.
  • Embodiment 3 is basically the same as Embodiment 1-3, and the difference lies in that: the aluminum base material is a film-like three-dimensional carbon-coated porous aluminum with a porosity of 80%.
  • the temperature of the argon atmosphere used is 25°C and the absolute pressure is 4 Pa.
  • the surface power of the graphite target is 8W/cm 2
  • the deposition time is 4h
  • the final carbon layer thickness is 30nm and the tensile strength is It is 1.5MPa three-dimensional carbon-coated porous aluminum.
  • the strength of the three-dimensional carbon-coated porous aluminum is 20% higher than that of the three-dimensional carbon-coated porous aluminum without carbon coating.
  • the coating efficiency is increased by 10%.
  • the contact resistance with the active material is reduced by 10-80%.
  • the mechanical strength of the three-dimensional carbon-coated porous aluminum can be increased by 20-80%, and the power density of the device can be increased by 10-50%.
  • the aluminum base body is deposited and covered with a carbon layer by a magnetron sputtering device.
  • the magnetron sputtering technology has the advantages of fast deposition speed, low temperature rise of the substrate, and less damage to the film layer; and
  • the combination between the aluminum base body and the carbon layer on the three-dimensional carbon-coated porous aluminum obtained by sputtering is good, and the carbon layer obtained by sputtering has high purity, good compactness, and good film uniformity, and is easy to realize industrialization.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physical Vapour Deposition (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Cell Electrode Carriers And Collectors (AREA)

Abstract

本发明提供的一种三维覆碳多孔铝，包括铝基本体及包覆在所述铝基本体表面的碳层，所述铝基本体为铝丝骨架和三维连通孔形成的泡沫铝，所述碳层连续致密地包覆在所述铝基本体表面，所述碳层厚度为0.34nm-2μm。通过在铝基本体上包覆连续致密的碳层，与现有技术中的铝箔及铝网相比，当三维多孔铝作为集流体时与活性物质的接触电阻降低10-80％。同时，可以使铝基本体的机械强度提高20-80％，其器件功率密度提高10-50％。

Description

三维覆碳多孔铝及其制备方法 技术领域
本发明涉及多孔铝制备技术领域，特别是指一种三维覆碳多孔铝及其制备方法。
背景技术
本部分旨在为权利要求书中陈述的本发明的实施方式提供背景或上下文。此处的描述不因为包括在本部分中就承认是现有技术。
三维多孔铝在工业中应用广泛，涉及各种导电、散热、隔音用途及机械用途(如缓冲、减重与强度支撑)，特别地，将铝材制备成多孔薄膜状材料，可以用作各种电化学储能器件的集流体，具有重大价值。制备多孔铝的方法包括在多孔高分子基板上沉积铝层、后去除高分子的方法，或将铝粉进行粘合后烧结获得，也可经过铝熔融、通入气体、吹泡而得。
但是通孔型的多孔铝因孔隙率较大，存在机械强度低的缺点。同时，多孔铝在空气中放置时，或即使在惰性气体保护下，也容易在表面形成一层氧化膜，使其在用作电极流体时与电极材料接触性较差，电阻较高，不利于提升器件的功率密度。
发明内容
本发明的目的在于提供一种三维覆碳多孔铝及其制备方法，其目的在于克服上述现有技术中用于电化学储能领域的多孔铝薄膜的机械强度差，接触电阻高的缺点。
本发明提供的技术方案为：
一种三维覆碳多孔铝，包括铝基本体及包覆在所述铝基本体表面的碳层，所述铝基本体为铝丝骨架和三维连通孔形成的泡沫铝，所述碳层连续致密地包覆在所述铝基本体表面，所述碳层厚度为0.34nm- 2μm。
优选的，所述铝基本体为薄膜状材料。
优选的，所述三维连通孔的孔径为1毫米以内，所述铝丝骨架为数十微米粗细。
优选的，所述铝基本体孔隙率为70-99.5％。
优选的，所述三维覆碳多孔铝被25℃，过量200％的0.1mol/L的盐酸的完全溶解的时间大于30小时。
优选的，所述三维覆碳多孔铝拉伸强度为0.3-3MPa。
优选的，所述三维覆碳多孔铝用于制造电化学储能器件的集流体。
一种三维覆碳多孔铝的制备方法，用于制备上述所述的三维覆碳多孔铝，包含以下步骤：
S1：准备材料：准备铝基本体材料及碳源；
S2：将碳源制作成靶材，并固定在磁控溅射设备的阴极上；
S3：将铝基本体置于正对靶材表面的阳极上；
S4：将磁控溅射设备内部抽真空后，充入0.5-5Pa的氩气；
S5：在阴极与阳极之间进行充电，使得靶材表面功率达到2-10W/cm2，并持续1-24h，得到三维覆碳多孔铝。
优选的，S1中所述碳源为石墨。
优选的，所述S5中充电过程中，所述磁控溅射设备内部温度控制在25-50℃之间。
与现有技术相比，本发明提供的一种三维覆碳多孔铝，包括铝基本体及包覆在所述铝基本体表面的碳层，所述铝基本体为铝丝骨架和三维连通孔形成的泡沫铝，所述碳层连续致密地包覆在所述铝基本体表面，所述碳层厚度为0.34nm-2μm。通过在铝基本体上包覆连续致密的碳层，与现有技术中的铝箔及铝网相比，当三维多孔铝作为集流体时与活性物质的接触电阻降低10-80％。同时，可以使铝基本体的机械强度提高20-80％，其器件功率密度提高10-50％。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1为本发明一实施方式中三维覆碳多孔铝制备方法的流程示意图。
图2为本发明一实施方式中三维覆碳多孔铝的微观结构示意图。
图3为图2中三维覆碳多孔铝进一步放大的微观结构示意图。
如下具体实施方式将结合上述附图进一步说明本发明实施例。
具体实施方式
为了能够更清楚地理解本发明实施例的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行详细描述。需要说明的是，在不冲突的情况下，本申请的实施方式中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明实施例，所描述的实施方式仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本发明实施例保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明实施例的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明实施例。
实施例1：
请参阅图1，本发明的目的在于提供一种三维覆碳多孔铝的制备方法，用于所述三维覆碳多孔铝，其主要包含以下步骤：
S1：准备工作：准备铝基本体材料及碳源。
本实施方式中，所述碳源为石墨，所述铝基本体材料为孔隙率为99.5％的薄膜状多孔铝。本实施例中，所述铝基本体材料为海绵状的材料，所述铝基本体材料为铝丝骨架和三维连通孔形成的泡沫铝，所 述铝基本体上的铝丝骨架仅数十微米。
S2：将碳源制作成板材作为沉积的靶材，并固定在磁控溅射设备的阴极上。
本实施例中，将石墨制作成板材形成石墨靶材并固定在磁控溅射设备的阴极上。
S3：将铝基本体置于正对靶材表面的阳极上。
S4：将磁控溅射设备内部抽真空后，充入惰性气体；
本实施方式中，所述惰性气体为氩气，所述磁控溅射设备内部的绝对压力为5Pa。
S5：在阴极与阳极之间进行充电，本实施方式中，通过调节磁控溅射设备控制石墨靶材表面功率为10W/cm 2，充电时间为24h。最终得到碳层厚度为2μm、拉伸强度为3MPa的三维覆碳多孔铝。
本实施方式中，所述三维覆碳多孔铝包括铝基本体及包覆在所述铝基本体表面的碳层，且所述碳层连续致密地包覆在所述铝基本体表面。
请参阅图2和图3，本实施方式中，所述铝基本体为薄膜状材料，所述铝基本体的界面电阻为0.1Ωcm 2，其抗氧化电压可达到5.2V。本实施方式中，所述三维覆碳多孔铝可以用于制备电化学储能器件的多孔能集流体，本实施方式中，所述电化学储能器件是指双电层电容器。与现有技术中的铝箔及铝网相比，本实施方式中所述三维覆碳多孔铝用作集流体时与活性物质的接触电阻降低了80％，同时，所述三维覆碳多孔铝的机械强度提高了80％，其器件功率密度提升了50％。本实施方式中，所述碳层使铝基本体被25℃、过量200％的0.1Mol/L的盐酸的完全溶解的时间为30小时。
实施例2：
本实施例与实施例1基本相同，其不同之处在于，所述铝基本体材料为孔隙率为70％的薄膜状三维覆碳多孔铝。
本实施方式中，通过磁控溅射沉积碳层过程中，使用的氩气环境的温度为40℃、绝对压力为3.5Pa。
本实施方式中，利用石墨靶材向铝基本体材料表面沉积碳层过程中，所述石墨靶材表面功率为2W/cm2，沉积时间为1h，最终得到碳层厚度为0.34nm，拉伸强度为0.3MPa的三维覆碳多孔铝。
所述三维覆碳多孔铝可以用于制备电化学储能器件的集流体，本实施方式中，所述电化学储能器件是指锂离子电池。当所述三维覆碳多孔铝用作集流体使用时，其界面电阻0.001Ωcm 2，抗氧化电压可达到4.8V。
所述三维覆碳多孔铝形成的集流体与活性物质的接触电阻降低50％。同时，所述三维覆碳多孔铝的机械强度提高了20％，其器件功率密度提高了30％。所述碳层覆盖的铝基本体被25℃，过量200％的0.1Mol/L的盐酸的完全溶解的时间为50小时。
实施例3：
本实施例与实施例1及实施例2基本相同，其不同之处在于：所述铝基本体材料为孔隙率为95％的薄膜状三维覆碳多孔铝。
本实施方式中，通过磁控溅射沉积碳层过程中，使用的氩气环境的温度为35℃、绝对压力为0.5Pa。
本实施方式中，利用石墨靶材向铝基本体材料表面沉积碳层过程中，所述石墨靶材表面功率为5W/cm 2，沉积时间为15h，最终得到碳层厚度为1μm，拉伸强度为2MPa的三维覆碳多孔铝。
本实施方式中，所述三维覆碳多孔铝可以用于制备电化学储能的集流体。当所述三维覆碳多孔铝作为集流体使用过程中，其与活性物质的接触电阻降低了10％，其界面电阻为0.05Ωcm 2，抗氧化电压可达到4.5V。同时，所述三维覆碳多孔铝的机械强度提升了60％，器件功率密度提高了10％。所述碳层使被覆盖的铝基本体被25℃，过量200％的0.1Mol/L的盐酸的完全溶解的时间为45小时。
实施例4：
本实施例与实施例1-3基本相同，其不同之处在于：所述铝基本体材料为孔隙率为80％的薄膜状三维覆碳多孔铝。
本实施方式中，通过磁控溅射沉积碳层过程中，使用的氩气环境 的温度为25℃、绝对压力为4Pa。
本实施方式中，利用石墨靶材向铝基本体材料表面沉积碳层过程中，所述石墨靶材表面功率为8W/cm 2，沉积时间为4h，最终得到碳层厚度为30nm，拉伸强度为1.5MPa的三维覆碳多孔铝。
本实施方式中，所述三维覆碳多孔铝的强度比不覆碳的三维覆碳多孔铝强度提高20％。用于连续涂布法负载电极物质时，使涂布效率提高了10％。
本发明中，通过在铝基本体材料上包覆连续致密且厚度可控的碳层，使得当三维覆碳多孔铝作为集流体使用时，其与活性物质的接触电阻降低10-80％。同时，可以提高三维覆碳多孔铝的机械强度20-80％，提高器件功率密度10-50％。
本发明中，通过磁控溅射设备对铝基本体进行碳层的沉积覆盖，所述磁控溅射技术具有沉积速度快，基材温升低、对膜层的损伤小等优点；且溅射所获得的三维覆碳多孔铝上铝基本体与碳层之间的结合较好，溅射所述获得的碳层纯度高、致密性好、成膜均匀性好，易于实现工业化。
以上实施方式仅用以说明本发明实施例的技术方案而非限制，尽管参照以上较佳实施方式对本发明实施例进行了详细说明，本领域的普通技术人员应当理解，可以对本发明实施例的技术方案进行修改或等同替换都不应脱离本发明实施例的技术方案的精神和范围。

Claims (10)

  1. 一种三维覆碳多孔铝，其特征在于：包括铝基本体及包覆在所述铝基本体表面的碳层，所述铝基本体为铝丝骨架和三维连通孔形成的泡沫铝，所述碳层连续致密地包覆在所述铝基本体表面，所述碳层厚度为0.34nm-2μm。
  2. 根据权利要求1所述的三维覆碳多孔铝，其特征在于：所述铝基本体为薄膜状材料。
  3. 根据权利要求1所述的三维覆碳多孔铝，其特征在于：所述三维连通孔的孔径为1毫米以内，所述铝丝骨架为数十微米粗细。
  4. 根据权利要求1所述的三维覆碳多孔铝，其特征在于：所述铝基本体孔隙率为70-99.5％。
  5. 根据权利要求1所述的三维覆碳多孔铝，其特征在于：所述三维覆碳多孔铝被25℃，过量200％的0.1mol/L的盐酸的完全溶解的时间大于30小时。
  6. 根据权利要求1所述的三维覆碳多孔铝，其特征在于：所述三维覆碳多孔铝拉伸强度为0.3-3MPa。
  7. 根据权利要求1所述的三维覆碳多孔铝，其特征在于：所述三维覆碳多孔铝用于制造电化学储能器件的集流体。
  8. 一种三维覆碳多孔铝的制备方法，用于制备权利要求1所述的三维覆碳多孔铝，其特征在于，包含以下步骤：
    S1：准备材料：准备铝基本体材料及碳源；
    S2：将碳源制作成靶材，并固定在磁控溅射设备的阴极上；
    S3：将铝基本体置于正对靶材表面的阳极上；
    S4：将磁控溅射设备内部抽真空后，充入0.5-5Pa的氩气；
    S5：在阴极与阳极之间进行充电，使得靶材表面功率达到2-10W/cm 2，并持续1-24h，得到三维覆碳多孔铝。
  9. 根据权利要求8所述的三维覆碳多孔铝的制备方法，其特征在于：S1中所述碳源为石墨。
  10. 根据权利要求8所述的三维覆碳多孔铝的制备方法，其特征在于：所述S5中充电过程中，所述磁控溅射设备内部温度控制在25-50℃之间。
PCT/CN2019/128880 2019-03-04 2019-12-26 三维覆碳多孔铝及其制备方法 Ceased WO2020177460A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910160944.8 2019-03-04
CN201910160944.8A CN109873167A (zh) 2019-03-04 2019-03-04 三维覆碳多孔铝及其制备方法

Publications (1)

Publication Number Publication Date
WO2020177460A1 true WO2020177460A1 (zh) 2020-09-10

Family

ID=66919749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/128880 Ceased WO2020177460A1 (zh) 2019-03-04 2019-12-26 三维覆碳多孔铝及其制备方法

Country Status (2)

Country Link
CN (1) CN109873167A (zh)
WO (1) WO2020177460A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116213724A (zh) * 2023-02-23 2023-06-06 山东海红建设工程有限公司 大孔径通孔泡沫铝板成型工艺及设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109873167A (zh) * 2019-03-04 2019-06-11 中天储能科技有限公司 三维覆碳多孔铝及其制备方法
CN109904459A (zh) * 2019-03-04 2019-06-18 中天储能科技有限公司 覆碳泡沫铝复合材料及其制备方法、集流体及过滤材料
CN113564523A (zh) * 2021-07-13 2021-10-29 南京邮电大学 一种镀碳多孔铝集流体的制备装置及其制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040048157A1 (en) * 2002-09-11 2004-03-11 Neudecker Bernd J. Lithium vanadium oxide thin-film battery
CN101958418A (zh) * 2010-03-04 2011-01-26 常德力元新材料有限责任公司 锂离子电池的电极集流体材料及制备方法
CN102694179A (zh) * 2012-06-12 2012-09-26 深圳市量能科技有限公司 一种锂离子电池及其制作方法
CN103515616A (zh) * 2012-06-27 2014-01-15 万向电动汽车有限公司 一种锂离子动力电池正极片及其制备方法
CN104831198A (zh) * 2015-04-16 2015-08-12 新疆大学 一种多孔泡沫金属复合材料及其制备方法
CN109786757A (zh) * 2019-03-04 2019-05-21 中天储能科技有限公司 覆碳泡沫铝复合物及其制备方法、集流体和过滤材料
CN109873167A (zh) * 2019-03-04 2019-06-11 中天储能科技有限公司 三维覆碳多孔铝及其制备方法
CN109904459A (zh) * 2019-03-04 2019-06-18 中天储能科技有限公司 覆碳泡沫铝复合材料及其制备方法、集流体及过滤材料

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040048157A1 (en) * 2002-09-11 2004-03-11 Neudecker Bernd J. Lithium vanadium oxide thin-film battery
CN101958418A (zh) * 2010-03-04 2011-01-26 常德力元新材料有限责任公司 锂离子电池的电极集流体材料及制备方法
CN102694179A (zh) * 2012-06-12 2012-09-26 深圳市量能科技有限公司 一种锂离子电池及其制作方法
CN103515616A (zh) * 2012-06-27 2014-01-15 万向电动汽车有限公司 一种锂离子动力电池正极片及其制备方法
CN104831198A (zh) * 2015-04-16 2015-08-12 新疆大学 一种多孔泡沫金属复合材料及其制备方法
CN109786757A (zh) * 2019-03-04 2019-05-21 中天储能科技有限公司 覆碳泡沫铝复合物及其制备方法、集流体和过滤材料
CN109873167A (zh) * 2019-03-04 2019-06-11 中天储能科技有限公司 三维覆碳多孔铝及其制备方法
CN109904459A (zh) * 2019-03-04 2019-06-18 中天储能科技有限公司 覆碳泡沫铝复合材料及其制备方法、集流体及过滤材料

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116213724A (zh) * 2023-02-23 2023-06-06 山东海红建设工程有限公司 大孔径通孔泡沫铝板成型工艺及设备
CN116213724B (zh) * 2023-02-23 2023-12-22 廊坊市正永泡沫制品有限公司 通孔泡沫铝板成型工艺及设备

Also Published As

Publication number Publication date
CN109873167A (zh) 2019-06-11

Similar Documents

Publication Publication Date Title
CN104103873B (zh) 一种固态电解质膜、其制备方法及应用
CN106159314B (zh) 全固态锂离子电池及其制备方法
CN110190287B (zh) 一种多孔亲锂铜箔集流体材料及其制备方法
WO2018192341A1 (zh) 一种金属二次电池负极用三维集流体及其制备方法和用途
CN102224616B (zh) 锂离子蓄电池
WO2017193778A1 (zh) 锂金属电极及其制备方法、锂金属二次电极负极、电池
WO2021003712A1 (zh) 固态电池的制备方法及固态电池
CN105244565B (zh) 一种可弯曲拉伸的可充电线状锌空气电池及其制备方法
CN101853931B (zh) 锂离子电池用多孔导电LiFePO4正极板的制备方法
JP2018181451A (ja) 積層型全固体電池およびその製造方法
CN102655229B (zh) 一种锂离子电池膜片的造孔方法
CN109873167A (zh) 三维覆碳多孔铝及其制备方法
WO2017190588A1 (zh) 一种采用激光熔覆复合扩散焊和脱合金制备锂离子电池硅负极的方法
CN109920957B (zh) 一种锂硫电池的插层材料
WO2020177461A1 (zh) 覆碳泡沫铝复合材料及其制备方法、集流体及过滤材料
CN112768636B (zh) 一种复合锂金属负极及其制备方法和应用
CN102683042A (zh) 一种电解电容器阴极电极箔及其制造方法
WO2021179219A1 (zh) 阳极极片及其制备方法、采用该极片的电池及电子装置
CN115842121A (zh) 一种锂金属电池用负极材料及其制备方法、锂金属电池
CN203941975U (zh) 一种固态电解质膜及锂空气电池
CN207967198U (zh) 一种锂金属负极电池结构
JP2018077989A (ja) 積層体グリーンシートおよび全固体二次電池
CN113937343B (zh) 改性全固态锂离子电池及其制备方法
CN113594410B (zh) 一种负极结构、其制备方法以及固态电池
CN111732867A (zh) 一种涂层浆料和涂层和锂离子电池及其用途

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19917899

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19917899

Country of ref document: EP

Kind code of ref document: A1