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A platform for research: civil engineering, architecture and urbanism
Self-supporting reduced graphene oxide film, lithium-free negative electrode current collector and application of self-supporting reduced graphene oxide film and lithium-free negative electrode current collector
The invention discloses a self-supporting reduced graphene oxide film, a lithium-free negative electrode current collector and application of the lithium-free negative electrode current collector, and the self-supporting reduced graphene oxide film is prepared by the following steps: 1) adding a fiber reinforced material into a graphene oxide water-phase dispersion liquid, and stirring to obtain slurry; 2) coating a glass or polytetrafluoroethylene mold with the slurry obtained in the step 1), drying, and stripping from the mold to obtain a film layer; and (3) carrying out rapid self-expansion reduction reaction on the film layer obtained in the step (2), and rolling to obtain the self-supporting reduced graphene oxide film. According to the lithium-free negative electrode current collector provided by the invention, the graphene oxide is compounded with the carbon fiber reinforced material and then is coated to form a film, the film is subjected to a thermal initiation self-expansion reduction reaction and then is rolled to obtain an ultrathin and light reduced graphene oxide film with a self-supporting capability, and the ultrathin and light reduced graphene oxide film is directly used as the lithium-free negative electrode current collector to be applied to a lithium-free negative electrode battery; and the lithium-free negative electrode battery has high mass specific energy and high volumetric specific energy.
本发明公开一种自支撑还原氧化石墨烯薄膜、无锂负极集流体及其应用，其中所述自支撑还原氧化石墨烯薄膜，制备步骤如下：1)氧化石墨烯水相分散液中加入纤维增强材料，搅拌得到浆料；2)将步骤1)所得的浆料涂覆在玻璃或聚四氟乙烯模具上，干燥后从模具上剥离得到膜层；3)将步骤2)所得的膜层进行快速自膨胀还原反应，经辊压得到自支撑还原氧化石墨烯薄膜。本发明提供的无锂负极集流体，通过氧化石墨烯复合碳纤维增强材料后涂覆成膜，经热引发自膨胀还原反应，再经辊压得到具有自支撑能力的超薄、轻质还原氧化石墨烯薄膜，直接用作无锂负极集流体应用于无锂负极电池，可使无锂负极电池兼具高质量比能量和高体积比能量。
Self-supporting reduced graphene oxide film, lithium-free negative electrode current collector and application of self-supporting reduced graphene oxide film and lithium-free negative electrode current collector
The invention discloses a self-supporting reduced graphene oxide film, a lithium-free negative electrode current collector and application of the lithium-free negative electrode current collector, and the self-supporting reduced graphene oxide film is prepared by the following steps: 1) adding a fiber reinforced material into a graphene oxide water-phase dispersion liquid, and stirring to obtain slurry; 2) coating a glass or polytetrafluoroethylene mold with the slurry obtained in the step 1), drying, and stripping from the mold to obtain a film layer; and (3) carrying out rapid self-expansion reduction reaction on the film layer obtained in the step (2), and rolling to obtain the self-supporting reduced graphene oxide film. According to the lithium-free negative electrode current collector provided by the invention, the graphene oxide is compounded with the carbon fiber reinforced material and then is coated to form a film, the film is subjected to a thermal initiation self-expansion reduction reaction and then is rolled to obtain an ultrathin and light reduced graphene oxide film with a self-supporting capability, and the ultrathin and light reduced graphene oxide film is directly used as the lithium-free negative electrode current collector to be applied to a lithium-free negative electrode battery; and the lithium-free negative electrode battery has high mass specific energy and high volumetric specific energy.
本发明公开一种自支撑还原氧化石墨烯薄膜、无锂负极集流体及其应用，其中所述自支撑还原氧化石墨烯薄膜，制备步骤如下：1)氧化石墨烯水相分散液中加入纤维增强材料，搅拌得到浆料；2)将步骤1)所得的浆料涂覆在玻璃或聚四氟乙烯模具上，干燥后从模具上剥离得到膜层；3)将步骤2)所得的膜层进行快速自膨胀还原反应，经辊压得到自支撑还原氧化石墨烯薄膜。本发明提供的无锂负极集流体，通过氧化石墨烯复合碳纤维增强材料后涂覆成膜，经热引发自膨胀还原反应，再经辊压得到具有自支撑能力的超薄、轻质还原氧化石墨烯薄膜，直接用作无锂负极集流体应用于无锂负极电池，可使无锂负极电池兼具高质量比能量和高体积比能量。
Self-supporting reduced graphene oxide film, lithium-free negative electrode current collector and application of self-supporting reduced graphene oxide film and lithium-free negative electrode current collector
一种自支撑还原氧化石墨烯薄膜、无锂负极集流体及其应用
ZHAO DONGMEI (author) / XU ZHIBIN (author) / LI YANG (author) / PANG HUI (author) / YANG ZONGFAN (author)
2023-03-14
Patent
Electronic Resource
Chinese
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