The advent of a new type of dual-ion battery technology is expected to solve the problem of the lithium-ion battery's existing capacity, cruising range and low energy density. The Shenzhen Institute of Advanced Technology of the Chinese Academy of Sciences revealed on the 29th that the latest achievements of Tang Yongbing and his research team in the Institute have recently been published in the international energy material authoritative periodical “Advanced Energy Materials†and were invited by the German Science Network. If the technology is industrialized, it will have a major impact on the existing lithium industry structure.
“The discovery is amazing. It is a new battery technology that has never been reported.†When the editor of “Advanced Energy Materials†notified the results of the study to be accepted by the periodical, it passed the evaluation of the anonymous reviewer to Tang Yongbing.
It is understood that Tang Yongbing joined the Institute of Advanced Integrated Technology of the Shenzhen Advanced Institute of the Chinese Academy of Sciences in August 2013 and his team was supported by the National Natural Science Foundation of China, the Innovation Team of Guangdong Province, the Shenzhen Peacock Team, and the Shenzhen Science and Technology Project.
At present, the main energy conversion and storage devices in the fields of portable electronic equipment, electric vehicles, and renewable energy systems are all lithium-ion batteries. However, lithium-ion batteries have low energy density, high manufacturing costs, and electrode materials contain toxic metals. The disposal of batteries will cause environmental problems. pollution problem. The current hot new energy vehicles, whether they use lithium or fuel cells, have the challenge of cost and cruising range.
In the research, Tang Yongbing team discovered a new type of high energy density aluminum-graphite double-ion battery, which is a new type of high-efficiency, low-cost energy storage battery. The research team adjusted the positive and negative electrodes of the traditional lithium battery to replace the lithium cobaltate, lithium manganate, ternary or lithium iron phosphate widely used as the cathode material of the battery with inexpensive and readily available graphite, and used the aluminum foil as the negative electrode of the battery. Material and anode current collector; electrolyte consists of conventional lithium salt and carbonate organic solvents. The working principle of the new battery is different from the traditional lithium ion battery. During the charging process, anion intercalation reaction occurs in the positive electrode graphite, and aluminum-lithium alloy reaction occurs in the aluminum negative electrode, and the discharge process is the opposite. This new reaction mechanism not only significantly increases the operating voltage of the battery, but also significantly reduces the quality, volume, and cost of the battery, improving the overall energy density of the battery.
"The mobile phone in the future may be half as thin as it is now, and smartphones do not need to be recharged every day." The relevant person in charge of the Shenzhen Advanced Institute of the Chinese Academy of Sciences said that if this technology is realized in industrialization, it can solve the problems of high battery cost and short range for electric vehicles. problem. However, the current battery technology has yet to be optimized, such as the need to further improve the battery's cycle stability. (Reporter Wen Kun)
Pyrite as Fillers Used in Grinding Wheels/ Abrasive Tools
Ablation grinding wheel / abrasive( filling agent )
PYRITE__As fillers used in grinding wheels/ abrasive tools
Place of Origin: Henan Luoyang, China
Pyrite, Iron pyrites, pyrites lump, Ferro sulphur, Pyrites powder.
Product Description
Detailed introduction: is filling agent for ablating grinding wheel abrasive, which can effectively reduce the grinding wheel temperature during ablation, improve the heat resistance, and prolong the service life of the grinding wheel.
Formation of a protective layer
(1)The reaction absorbing oxygen occurs between 400 and 475 degrees, thereby reducing the oxidation of resin, reducing the oxidation burn of workpieces, and prolonging the working life of grinding wheels at high temperature.
4 FeS2 + 11 O2→2 Fe2O3 + 8 SO2
(2) 4 FeS + 7 O2→4 Fe2O3 + 4 SO2
400-475 degrees is a limit that the grinding wheel can easily reach. The above reaction creates an oxygen-free and hypoxic environment for the grinding wheel at the micro level, thereby improving the high-temperature performance of the grinding wheel.
Decomposition reaction occurs at 650-degree heat absorption, thereby reducing the working temperature of the grinding wheels.
FeS2→FeS + S
(3) It enters the melting state at about 1100 degrees, which becomes a good lubricant to protect the grinding wheel FeS(s)→FeS(l).
(4)Sulfur, sulfur dioxide and sulfur trioxide react with the workpiece surface to form FexSy:
Quality:
S: 48%min, FE: 42%min, SIO2: 3.0%max, PB: 0.1%max,
ZN: 0.1%max, AS: 0.1%max, . C: 0.3%max, CU: 0.2%max,
H20: 1.0%max, SIZE: 95%min
Granularity: (0-3)mm/(3-8)mm/(3-15)mm/(15-50)mm or other particle size.
Packing: 25KG/500KG/1000KG/BAG or 1000KG/BAG or other packaging.
Note: if there are special requirements, the product can be customized according to clients` requirements.
Iron Sulphide For Resin Grinding Wheel---LHT(SL)
Iron sulphide for resin grinding wheel Pyrite, Iron pyrites, pyrites lump, Ferro sulphur, Pyrites powder
LUOYANG PERFECT TRADING CO.LTD, , https://www.pyritefes.com