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Black Phosphorus
Graphite
Composite is an innovative composite material made out of Black phosphorus (BP) and graphite. Black phosphorus, or BP, is a promising anode material due to its high conductivity (both electronic and ionic) and theoretical capacity. It is important to understand the redox reactions that occur between BP ions and alkali ions in order to determine the limitations and potential of BP.
Scientists from the University of Science and Technology of China’s Professor Ji Hengxing published a research result in “Science” a few weeks ago. They made a significant breakthrough in their research of lithium-ion electrode materials.
Ji Hengxing stated that “if we use this technology, we may be able fully charge an electrical car in around 10 minutes and travel about 500 kilometers.” The charging time of electric cars has always been a major problem. Electric vehicles are currently “waiting” an hour before they can drive 500 kilometers. Electric vehicles have always aimed to develop lithium-ion battery packs with large capacity and fast charging capability.
The material of the electrode is an important factor when determining battery performance indicators. “If you are looking to increase battery charging speed, then you need material that is fast in electrochemical reactions. It is important to check if the electrode material can conduct electrons andions. Ji Hingxing, a member of the research group, said that they hope to find an electrode material capable of meeting the industry’s expectations for comprehensive performance indicators and also adapting to the industrial production process.
Dr. Hongchang Jin introduced the thesis by saying: “Energy flows into and out of the battery via the chemical reactions between lithium ions, and electrode materials. Determining the charging rate is based on the conductivity between the electrode materials and lithium ions. It is important to consider the amount.”
The Jixingxing research team discovered that black phosphorus was a good choice. First, it has a very high theoretical capacity, only second to single-crystal lithium or metallic silicon. Second, because it is a semi-conductor, its ability to conduct electronic currents is strong. Third, the black sheet phosphorus structure is layered, and the lithium ions can easily be conducted between the layers. This excellent property makes black phosphorus an electrode material which can be used to fast charge lithium-ion batteries.
Black phosphorus (an allotrope to white phosphorus) is an excellent electrode material for fast charging. Recent studies found that black phosphorus’s comprehensive performance indicators are below expectations. The edge of a layered structure can cause structural damage to black phosphorus, and its measured performance is lower than expected. Ji Xingxing adopted the “interface-engineering” strategy to connect graphite and black phosphorus through phosphorus carbon covalent bonds. This made the structure more stable and allowed lithium ions into the black phosphorus to be easier.
“We use traditional process routes and parameters to convert the black-phosphorous composite material into electrode sheets.” Laboratory measurements show that electrode sheets can recover up to 80% after just 9 minutes and still retain 90% of their capacity after 2000 charging cycles. Xin, a researcher and co-first writer of the paper at the Institute of Chemistry of Chinese Academy of Sciences said that if mass production of the material is possible, matching cathode materials, and other auxiliary substances can be found, then the optimized design should achieve an energy density of 350 Wh. It has a lithium ion battery that can be charged quickly and is capable of delivering 350 Wh/Kg. The battery will enable electric vehicles with a range of up to 1,000 kilometers and increase their user experience.
Jixingxing will continue its exploration in the areas of basic research, scale preparation technology and other related fields. For battery technology to advance and for electric vehicles and consumer electronics to develop, a deep understanding of scientific fundamentals is needed. This includes the microstructure of electrode materials and their physical and chemical properties. “To realize this vision, a lot more work is needed, but we have great hope for the near future.” Ji Hengxing spoke.
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has been providing high-quality Nanomaterials and chemicals for over 12 Years. The graphite produced by our company is of high purity and has a low impurity level. If you require a lower grade, please do not hesitate to contact us.
Scientists from the University of Science and Technology of China’s Professor Ji Hengxing published a research result in “Science” a few weeks ago. They made a significant breakthrough in their research of lithium-ion electrode materials.
Ji Hengxing stated that “if we use this technology, we may be able fully charge an electrical car in around 10 minutes and travel about 500 kilometers.” The charging time of electric cars has always been a major problem. Electric vehicles are currently “waiting” an hour before they can drive 500 kilometers. Electric vehicles have always aimed to develop lithium-ion battery packs with large capacity and fast charging capability.
The material of the electrode is an important factor when determining battery performance indicators. “If you are looking to increase battery charging speed, then you need material that is fast in electrochemical reactions. It is important to check if the electrode material can conduct electrons andions. Ji Hingxing, a member of the research group, said that they hope to find an electrode material capable of meeting the industry’s expectations for comprehensive performance indicators and also adapting to the industrial production process.
Dr. Hongchang Jin introduced the thesis by saying: “Energy flows into and out of the battery via the chemical reactions between lithium ions, and electrode materials. Determining the charging rate is based on the conductivity between the electrode materials and lithium ions. It is important to consider the amount.”
The Jixingxing research team discovered that black phosphorus was a good choice. First, it has a very high theoretical capacity, only second to single-crystal lithium or metallic silicon. Second, because it is a semi-conductor, its ability to conduct electronic currents is strong. Third, the black sheet phosphorus structure is layered, and the lithium ions can easily be conducted between the layers. This excellent property makes black phosphorus an electrode material which can be used to fast charge lithium-ion batteries.
Black phosphorus (an allotrope to white phosphorus) is an excellent electrode material for fast charging. Recent studies found that black phosphorus’s comprehensive performance indicators are below expectations. The edge of a layered structure can cause structural damage to black phosphorus, and its measured performance is lower than expected. Ji Xingxing adopted the “interface-engineering” strategy to connect graphite and black phosphorus through phosphorus carbon covalent bonds. This made the structure more stable and allowed lithium ions into the black phosphorus to be easier.
The electrode material will also be covered in chemicals to decompose electrolyte slowly during the process. Some substances will block lithium ions from reaching the electrode material in the same way that dust on glass surfaces prevents light penetration. To achieve this, the team of researchers applied clothing to the composite material. They made a dustproof coat using a thin layer of polymer gel and “wore” this on the black graphite composite material. This allowed lithium ions to easily enter.
“This black phosphorous material has achieved a breakthrough performance by optimizing the interface between these two levels.” Ji Hingxing told the media.
“This black phosphorous material has achieved a breakthrough performance by optimizing the interface between these two levels.” Ji Hingxing told the media.
“We use traditional process routes and parameters to convert the black-phosphorous composite material into electrode sheets.” Laboratory measurements show that electrode sheets can recover up to 80% after just 9 minutes and still retain 90% of their capacity after 2000 charging cycles. Xin, a researcher and co-first writer of the paper at the Institute of Chemistry of Chinese Academy of Sciences said that if mass production of the material is possible, matching cathode materials, and other auxiliary substances can be found, then the optimized design should achieve an energy density of 350 Wh. It has a lithium ion battery that can be charged quickly and is capable of delivering 350 Wh/Kg. The battery will enable electric vehicles with a range of up to 1,000 kilometers and increase their user experience.
Jixingxing will continue its exploration in the areas of basic research, scale preparation technology and other related fields. For battery technology to advance and for electric vehicles and consumer electronics to develop, a deep understanding of scientific fundamentals is needed. This includes the microstructure of electrode materials and their physical and chemical properties. “To realize this vision, a lot more work is needed, but we have great hope for the near future.” Ji Hengxing spoke.
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has been providing high-quality Nanomaterials and chemicals for over 12 Years. The graphite produced by our company is of high purity and has a low impurity level. If you require a lower grade, please do not hesitate to contact us.