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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-01-04 Hits: Popular:AG11 battery
Recently, Wu Zhongshuai's team, a researcher at the Two-dimensional Materials and Energy Devices Innovation Zone Research Group of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, developed a three-dimensional graphene/carbon nanotube porous aerogel material and applied it to the sulfur content of lithium-sulfur batteries. The single-element carrier and the intermediate layer integrate the cathode to obtain a lithium-sulfur battery with high volumetric energy density and excellent cycle stability. Relevant research results were published in Nano Energy.
Lithium-sulfur batteries have high-quality theoretical energy density (2600Wh/kg) and high volumetric energy density (2800Wh/L), and are considered to be a high-specific energy battery with great application prospects. However, due to the low mass density of sulfur (2.07g/cm3), poor conductivity (5×10-30S/cm), large volume expansion of active materials (78.7%) during charging and discharging, and severe polysulfide shuttling, etc. As a result, although their mass density is high, their volume energy density is generally low and their cycle performance is poor, which greatly limits the practical application of lithium-sulfur batteries. Therefore, how to simultaneously improve the mass and volume energy density of lithium-sulfur batteries and extend their cycle life is one of the bottlenecks in current application research of lithium-sulfur batteries.
The research team developed a three-dimensional graphene/carbon nanotube porous aerogel material and simultaneously applied it to the sulfur element carrier and intermediate layer of lithium-sulfur batteries, successfully constructing a self-supporting, metal-free integrated cathode Material. The integrated cathode material has high compaction density, excellent conductivity, and good mechanical flexibility. It not only achieves a high volume sulfur loading (1.64g/cm3), but also significantly improves the volumetric energy density of lithium-sulfur batteries (1615Ah/ L), and effectively inhibits the shuttle effect of polysulfides. Under the condition of a high current density of 2C, the battery can cycle stably for 500 cycles with almost no capacity attenuation, showing excellent cycle stability. This design strategy of integrating the sulfur element carrier and the interlayer positive electrode structure provides a new idea for building lithium-sulfur batteries with high volumetric energy density and long cycle life.
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