New progress in research on new graphene-based long-life aluminum batteries -Lithium - Ion Battery Equipment
The Power Lithium Battery Engineering Laboratory of Ningbo Institute of Materials has carried out research on aluminum-ion batteries using graphene as electrodes. The recent research work was published online in "Advanced Energy Materials" under the title Large-sized few-layer graphene enable sa ultrafast and long-life aluminum-ion battery.
Electrochemical energy storage technology is the key to solving the problem of integrating electric vehicles and renewable energy into the grid for power generation. Lithium-ion batteries using organic solvents as electrolytes have advantages in energy density, but there are safety hazards and limited lithium resources. In contrast, aqueous non-lithium ion (such as sodium ion, potassium ion, zinc ion, magnesium ion, etc.) batteries have the advantages of high safety and low cost, and have important application prospects in the field of energy storage. Since 2013, the Power Lithium Battery Engineering Laboratory of Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences has proactively laid out the research on new concept batteries of non-lithium ion batteries, and has made a series of progress in the basic research on new concept batteries of aqueous ions (ScientificReports2013, 3 ,1946;ChemSusChem2014,7,2295;AdvancedEnergyMaterials2015,5,1400930;ScientificReports2015,5,18263;NatureCommunications2016,7,11982). However, the cycle life of aqueous ion batteries is relatively limited, generally less than 1,000 times, and it is difficult to meet the needs of large-scale energy storage. In 2015, Hongjie Dai, a professor at Stanford University in the United States, reported a new type of aluminum-ion battery in Nature (2015, 520, 324). It has attracted widespread attention from academia and industry because of its durability, low flammability and cost.(Lithium - Ion Battery Equipment)
Inspired by this work, the Power Lithium Battery Engineering Laboratory of Ningbo Institute of Materials carried out research on aluminum-ion batteries using graphene as electrodes. The recent research work was published online in "Advanced Energy Materials" under the title Large-sized few-layer graphene enable sa ultrafast and long-life aluminum-ion battery. (Advanced Energy Materials, DOI: 10.1002/aenm.201700034). In this work, scientific researchers used mass-produced multi-layer graphene (produced and provided by Ningbo Moxi Technology Co., Ltd.) as the flexible positive electrode, metal aluminum as the negative electrode, and ionic liquid as the electrolyte to construct a device with ultra-long cycle life and ultra-high performance. 2V aluminum-ion battery with high rate performance. The study found that both the thickness (number of layers) and lateral dimensions of the two-dimensional flake graphite anode material have an important impact on the intercalation behavior of AlCl4- ions. Compared with flake graphite with thousands of layers, multilayer graphene has very few layers (less than 10 layers), which can significantly reduce the activation energy of AlCl4- ion insertion and diffusion, making the battery have ultra-high rate performance. Charging and discharging can be completed within 1 minute. On the other hand, electrodes made of larger-sized multi-layer graphene have better flexibility and graphitization, and are more resistant to repeated insertion and extraction of AlCl4- ions, thus allowing the battery to perform better. Ultra-long cycle life, with almost no capacity decay after 10,000 charge and discharge cycles. In addition, this research work further revealed the chemical mechanism of AlCl4- ions intercalation in two-dimensional graphite cathode materials such as multilayer graphene and graphite through a series of fine characterizations, that is, the fourth-order and fifth-order structures induced by intercalation ions. change mechanism. This research work not only has important guiding significance for the selection of graphite cathode materials in aluminum-ion batteries, but also has great academic value for the development of practical graphene-based new long-life energy storage batteries.
The above research work has been funded by the key deployment projects of the Chinese Academy of Sciences, the Youth Promotion Association of the Chinese Academy of Sciences, the National Natural Science Foundation and the Zhejiang Provincial Natural Science Foundation.
Electrochemical energy storage technology is the key to solving the problem of integrating electric vehicles and renewable energy into the grid for power generation. Lithium-ion batteries using organic solvents as electrolytes have advantages in energy density, but there are safety hazards and limited lithium resources. In contrast, aqueous non-lithium ion (such as sodium ion, potassium ion, zinc ion, magnesium ion, etc.) batteries have the advantages of high safety and low cost, and have important application prospects in the field of energy storage. Since 2013, the Power Lithium Battery Engineering Laboratory of Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences has proactively laid out the research on new concept batteries of non-lithium ion batteries, and has made a series of progress in the basic research on new concept batteries of aqueous ions (ScientificReports2013, 3 ,1946;ChemSusChem2014,7,2295;AdvancedEnergyMaterials2015,5,1400930;ScientificReports2015,5,18263;NatureCommunications2016,7,11982). However, the cycle life of aqueous ion batteries is relatively limited, generally less than 1,000 times, and it is difficult to meet the needs of large-scale energy storage. In 2015, Hongjie Dai, a professor at Stanford University in the United States, reported a new type of aluminum-ion battery in Nature (2015, 520, 324). It has attracted widespread attention from academia and industry because of its durability, low flammability and cost.(Lithium - Ion Battery Equipment)
Inspired by this work, the Power Lithium Battery Engineering Laboratory of Ningbo Institute of Materials carried out research on aluminum-ion batteries using graphene as electrodes. The recent research work was published online in "Advanced Energy Materials" under the title Large-sized few-layer graphene enable sa ultrafast and long-life aluminum-ion battery. (Advanced Energy Materials, DOI: 10.1002/aenm.201700034). In this work, scientific researchers used mass-produced multi-layer graphene (produced and provided by Ningbo Moxi Technology Co., Ltd.) as the flexible positive electrode, metal aluminum as the negative electrode, and ionic liquid as the electrolyte to construct a device with ultra-long cycle life and ultra-high performance. 2V aluminum-ion battery with high rate performance. The study found that both the thickness (number of layers) and lateral dimensions of the two-dimensional flake graphite anode material have an important impact on the intercalation behavior of AlCl4- ions. Compared with flake graphite with thousands of layers, multilayer graphene has very few layers (less than 10 layers), which can significantly reduce the activation energy of AlCl4- ion insertion and diffusion, making the battery have ultra-high rate performance. Charging and discharging can be completed within 1 minute. On the other hand, electrodes made of larger-sized multi-layer graphene have better flexibility and graphitization, and are more resistant to repeated insertion and extraction of AlCl4- ions, thus allowing the battery to perform better. Ultra-long cycle life, with almost no capacity decay after 10,000 charge and discharge cycles. In addition, this research work further revealed the chemical mechanism of AlCl4- ions intercalation in two-dimensional graphite cathode materials such as multilayer graphene and graphite through a series of fine characterizations, that is, the fourth-order and fifth-order structures induced by intercalation ions. change mechanism. This research work not only has important guiding significance for the selection of graphite cathode materials in aluminum-ion batteries, but also has great academic value for the development of practical graphene-based new long-life energy storage batteries.
The above research work has been funded by the key deployment projects of the Chinese Academy of Sciences, the Youth Promotion Association of the Chinese Academy of Sciences, the National Natural Science Foundation and the Zhejiang Provincial Natural Science Foundation.
