Dalian Institute of Chemical Physics has made significant progress in 602030 lipo battery research

　　With the rapid development of flexible wearable, miniaturized, and integrated electronic devices, there is an urgent need to develop high-performance, lightweight, wearable, and structurally functional integrated flexible power supplies and their technologies. Lithium-ion batteries are currently the most widely used and popular power source in society. However, they have safety issues such as large size, fixed shape, poor flexibility, electrolyte leakage, and flammability. Therefore, it is difficult to meet the needs of flexible and miniaturized electronic devices. need.

　　Recently, the research team took the lead in developing an all-solid-state planar integrated 602030 lipo battery. The lithium-ion micro battery uses nano-lithium titanate nanospheres as the negative electrode, lithium iron phosphate microspheres as the positive electrode, highly conductive graphene as the non-metallic current collector, and ion gel as the electrolyte. It has a planar interdigitated configuration and does not require the use of traditional Diaphragm and metal current collector. The obtained 602030 lipo battery has the advantage of multi-directional mass transfer, showing a high volumetric energy density of 125.5mWh/cm3, excellent rate performance; ultra-long cycle stability, with basically no capacity decay after 3300 cycles; and good mechanical properties. Flexible, its electrode structure is not damaged and its electrochemical performance does not change significantly under repeated bending or twisting. At the same time, the micro energy storage device can work stably in a high temperature environment of 100°C and has long cycle stability (1000 cycles). In addition, the lithium-ion battery can achieve modular self-integration without metal connectors, achieving effective regulation of output voltage and capacity. Therefore, this lithium-ion micro battery has great potential in the application of flexible and miniaturized electronic devices.

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