New high-performance, low-cost lithium battery technology successfully developed -Lithium - Ion Battery Equipment
Recently, researcher Tang Yongbing and his research team from the Functional Thin Film Materials Research Center of the Institute of Integration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, successfully developed a new high-performance, low-cost lithium battery technology, which is expected to break the existing lithium battery industry pattern. Relevant research results "ANovelandGeneralizedLithium-IonBatteryConfigurationUtilizingAlFoilasBothAnodeandCurrentCollectorforEnhancedEnergyDensity (a new universal high-energy-density lithium battery based on aluminum foil anode/current collector)" has been published online in Advanced Materials, (DOI: 10.1002/adma.201604219, IF=18.96) and applied for 1 international invention patent (PCT/CN2016/081346).
With the development of science and technology, lithium batteries have been widely used in portable electronic devices, mobile tool power supplies and other fields, and their market size has expanded rapidly. In particular, the demand for electric vehicles and large-scale energy storage facilities has increased, and the development of new secondary batteries with high energy density, low cost, and long cycle life has become increasingly urgent. Lithium batteries have a history of 25 years since they were commercialized by Sony in 1991. Their working principle relies on the movement of lithium ions back and forth between the positive electrode (lithium cobalt oxide, lithium iron phosphate, ternary, etc.) and the graphite negative electrode ( Embedding and de-embedding) to realize the charging and discharging process of the battery. However, current commercial lithium batteries still have problems such as low energy density, high manufacturing costs, and large capital investment, which restrict the development of the battery industry.(Lithium - Ion Battery Equipment)
Based on the above considerations, researcher Tang Yongbing and his team members Ji Bifa, Zhang Fan, Sheng Maohua and others successfully developed a new lithium battery based on aluminum foil anode. This new type of battery directly uses aluminum foil as both the battery negative electrode and current collector, replacing the graphite negative electrode and copper foil current collector of traditional lithium batteries; the positive electrode uses currently common commercial lithium cobalt oxide, lithium iron phosphate, ternary materials, etc.; the electrolyte uses Carbonate solvents. This new battery has a new full-battery reaction mechanism: when charging, lithium ions are deintercalated from the positive electrode material, move to the surface of the aluminum foil negative electrode, and form an aluminum-lithium alloy with aluminum; when discharging, lithium ions are deintercalated from the aluminum-lithium alloy, And embedded in the cathode material.
This structure can not only effectively reduce the weight and volume of the battery, significantly improve the mass and volumetric energy density, but also greatly reduce the production and manufacturing costs, and has wide applicability. Research results show that the energy density of a full battery (LCO-Al) using lithium cobalt oxide as the positive electrode and aluminum foil as the negative electrode can reach 263Wh/kg, and the battery capacity remains at 81% after 250 charge and discharge cycles; using lithium iron phosphate as the positive electrode, The energy density of the full battery (LFP-Al) with aluminum foil as the negative electrode reaches 163Wh/kg, and the battery capacity remains at 84% after 500 charge and discharge cycles; the full battery with nickel cobalt lithium manganate ternary material as the positive electrode and aluminum foil as the negative electrode ( NCM-Al) energy density reaches 258Wh/kg, and the battery capacity maintains 86% after 250 charge and discharge cycles. The research results have huge industrialization prospects and are expected to change the existing lithium battery industry pattern.
This research was funded by the Guangdong Provincial Innovation Research Team, Guangdong Provincial Science and Technology Plan Project, Shenzhen Science and Technology Plan Project, and the National Natural Science Foundation of China.
With the development of science and technology, lithium batteries have been widely used in portable electronic devices, mobile tool power supplies and other fields, and their market size has expanded rapidly. In particular, the demand for electric vehicles and large-scale energy storage facilities has increased, and the development of new secondary batteries with high energy density, low cost, and long cycle life has become increasingly urgent. Lithium batteries have a history of 25 years since they were commercialized by Sony in 1991. Their working principle relies on the movement of lithium ions back and forth between the positive electrode (lithium cobalt oxide, lithium iron phosphate, ternary, etc.) and the graphite negative electrode ( Embedding and de-embedding) to realize the charging and discharging process of the battery. However, current commercial lithium batteries still have problems such as low energy density, high manufacturing costs, and large capital investment, which restrict the development of the battery industry.(Lithium - Ion Battery Equipment)
Based on the above considerations, researcher Tang Yongbing and his team members Ji Bifa, Zhang Fan, Sheng Maohua and others successfully developed a new lithium battery based on aluminum foil anode. This new type of battery directly uses aluminum foil as both the battery negative electrode and current collector, replacing the graphite negative electrode and copper foil current collector of traditional lithium batteries; the positive electrode uses currently common commercial lithium cobalt oxide, lithium iron phosphate, ternary materials, etc.; the electrolyte uses Carbonate solvents. This new battery has a new full-battery reaction mechanism: when charging, lithium ions are deintercalated from the positive electrode material, move to the surface of the aluminum foil negative electrode, and form an aluminum-lithium alloy with aluminum; when discharging, lithium ions are deintercalated from the aluminum-lithium alloy, And embedded in the cathode material.
This structure can not only effectively reduce the weight and volume of the battery, significantly improve the mass and volumetric energy density, but also greatly reduce the production and manufacturing costs, and has wide applicability. Research results show that the energy density of a full battery (LCO-Al) using lithium cobalt oxide as the positive electrode and aluminum foil as the negative electrode can reach 263Wh/kg, and the battery capacity remains at 81% after 250 charge and discharge cycles; using lithium iron phosphate as the positive electrode, The energy density of the full battery (LFP-Al) with aluminum foil as the negative electrode reaches 163Wh/kg, and the battery capacity remains at 84% after 500 charge and discharge cycles; the full battery with nickel cobalt lithium manganate ternary material as the positive electrode and aluminum foil as the negative electrode ( NCM-Al) energy density reaches 258Wh/kg, and the battery capacity maintains 86% after 250 charge and discharge cycles. The research results have huge industrialization prospects and are expected to change the existing lithium battery industry pattern.
This research was funded by the Guangdong Provincial Innovation Research Team, Guangdong Provincial Science and Technology Plan Project, Shenzhen Science and Technology Plan Project, and the National Natural Science Foundation of China.
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