{"id":1831,"date":"2019-05-22T02:48:07","date_gmt":"2019-05-22T02:48:07","guid":{"rendered":"http:\/\/www.meetyoucarbide.com\/single-post-2018-research-progress-on-energy-storage-and-power-battery\/"},"modified":"2020-05-04T13:12:04","modified_gmt":"2020-05-04T13:12:04","slug":"2018-research-progress-on-energy-storage-and-power-battery","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/ar\/2018-%d8%a8%d8%ad%d8%ab-%d8%aa%d9%82%d8%af%d9%85-%d9%81%d9%8a-%d8%aa%d8%ae%d8%b2%d9%8a%d9%86-%d8%a7%d9%84%d8%b7%d8%a7%d9%82%d8%a9-%d9%88%d8%a8%d8%b7%d8%a7%d8%b1%d9%8a%d8%a9-%d8%a7%d9%84%d8%b7%d8%a7\/","title":{"rendered":"2018 \u062a\u0642\u062f\u0645 \u0627\u0644\u0628\u062d\u062b \u0641\u064a \u062a\u062e\u0632\u064a\u0646 \u0627\u0644\u0637\u0627\u0642\u0629 \u0648\u0628\u0637\u0627\u0631\u064a\u0629 \u0627\u0644\u0637\u0627\u0642\u0629"},"content":{"rendered":"<div class=\"vgblk-rw-wrapper limit-wrapper\">\n<div><img decoding=\"async\" src=\"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/05\/141d2f_560f0ff5043b471481720e063c35ea83mv2-1.jpg\" alt=\"\" title=\"\"><\/p>\n<h3>1. 1 \u0645\u0627\u062f\u0629 \u0627\u0644\u0643\u0627\u062b\u0648\u062f<\/h3>\n<div>Lithium-ion battery cathode materials are mainly divided into lithium-rich manganese-based materials, ternary composite materials, spinel-type LiMn 2 O 4 , lithium iron phosphate and lithium nickel manganese oxide. Li-rich manganese-based solid solution cathode material Li 1 + x M 1 &#8211; x O 2 (M is a transition metal such as Ni, Co and Mn) with high specific capacity (&gt; 200 mAh\/g), high energy density, low cost and environmental protection Friendly, etc., but there are shortcomings such as low initial discharge efficiency, low coulombic efficiency, poor cycle life, unsatisfactory high temperature performance, and low rate performance. Researcher Wang Zhaoxiang from the Institute of Physics, Chinese Academy of Sciences combines experimental research with theoretical calculations. From the exploration of the driving force of Mn migration, this paper studies a series of problems caused by Mn migration and proposes a method to inhibit Mn migration. Professor Wang Xianyou of Xiangtan University started from the relationship between material structure and performance, and improved and improved by optimizing material structure, design material composition (O excess), controlling material phase composition (Co-doped) and surface modification (coated with polyaniline). The way of lithium material performance. In the coating modification, Professor Chen Zhaoyong of Changsha University of Science and Technology conducted an in-depth study: a microporous Al 2 O 3 \/PAS double-layer cladding structure was constructed on the surface of the lithium-rich manganese-based cathode material, and the cathode material was at a rate of 0.1 C. The specific capacity is up to 280 mAh\/g, and after 100 cycles at 0. 2 C, there is still 98% capacity retention and no structural transformation of the material. The research of Ni-Co-Mn ternary cathode material mainly focuses on optimizing the composition and preparation conditions, coating or doping modification, etc., in order to further improve the capacity, cycle characteristics and rate performance. The first discharge specific capacity of the first discharge specific capacity is 209. 4 mAh\/g, 1. 0 C. The first discharge specific capacity of the material is 0. 1 C mAh\/g, 1. 0 C. 7%\u3002 Capacity retention rate of 95. 5%, the capacity retention rate at high temperatures is still 87.7%. The coating material may also be LiTiO 2 , Li 2 ZrO 3 or the like, which can improve the stability of the ternary positive electrode material. Preparation of spinel LiMn 2 O 4 by solid phase combustion synthesis can reduce the reaction temperature, accelerate the reaction rate and improve the crystal structure of the product. The main methods for modifying the spinel LiMn 2 O 4 are coating and doping, such as coating ZnO, Al 2 O 3 , doping Cu, Mg and Al. The modification of lithium iron phosphate is mentioned. The methods used are element co-doping (such as vanadium ion and titanium ion), addition of ferrocene and other catalytic graphitization additives, and compounding with graphene, carbon nanotubes and the like. For lithium nickel manganate cathode materials, high temperature stability can also be improved by doping modification and coating, and improving synthesis methods and processes. Other researchers have proposed some other types of cathode materials, such as carbonyl conjugated phthalocyanine compounds, with an initial discharge specific capacity of 850 mAh\/g; graphene-mesoporous carbon\/selenium (G-MCN\/Se) ternary For the composite film positive electrode, when the selenium content was 62%, the first discharge specific capacity of 1 C was 432 mAh\/g, and remained at 385 mAh\/g after 1 300 cycles, showing good cycle stability.<\/div>\n<h3>1.2 \u0645\u0627\u062f\u0629 \u0627\u0644\u0623\u0646\u0648\u062f<\/h3>\n<div>\u062a\u0639\u062a\u0628\u0631 \u0645\u0648\u0627\u062f \u0627\u0644\u062c\u0631\u0627\u0641\u064a\u062a \u062d\u0627\u0644\u064a\u064b\u0627 \u0645\u0648\u0627\u062f \u0627\u0644\u0623\u0646\u0648\u062f \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u060c \u0644\u0643\u0646 \u0627\u0644\u0628\u0627\u062d\u062b\u064a\u0646 \u0643\u0627\u0646\u0648\u0627 \u064a\u0633\u062a\u0643\u0634\u0641\u0648\u0646 \u0645\u0648\u0627\u062f 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\u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0643\u0647\u0631\u0648\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u0648\u0627\u0633\u0639\u0629 \u0648\u0642\u062f\u0631\u0629 \u0648\u0627\u0633\u0639\u0629 \u0639\u0644\u0649 \u0627\u0644\u062a\u0643\u064a\u0641 \u0645\u0639 \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629. \u0625\u0646\u0647\u0627 \u0645\u0627\u062f\u0629 \u0623\u0633\u0627\u0633\u064a\u0629 \u0644\u0628\u0637\u0627\u0631\u064a\u0627\u062a \u0627\u0644\u0644\u064a\u062b\u064a\u0648\u0645 \u0623\u064a\u0648\u0646.<\/div>\n<h2>2 \u0628\u0637\u0627\u0631\u064a\u0629 NiMH<\/h2>\n<div>A research hotspot in nickel-metal hydride batteries is hydrogen storage alloy materials. Professor Guo Jin of Guangxi University believes that the rapid cooling at liquid nitrogen temperature and the non-equilibrium treatment of mechanical ball milling regulate the hydrogen storage performance of Mg 17 Al 12 alloy. Associate Professor Lan Zhiqiang of Guangxi University used the heat treatment process combined with mechanical alloying to prepare Mg 90 Li 1 &#8211; x Si x (x =0, 2, 4 and 6) composite hydrogen storage materials, and studied the addition of Si to the solid solution storage of Mg-Li system. The effect of hydrogen performance. The introduction of rare earth elements can inhibit the amorphization phenomenon and the disproportionation process of the alloy composition during the hydrogen absorption and desorption cycle, and increase the reversible hydrogen absorption and desorption of the alloy. The conventional hydrogen storage alloy materials on the market are mostly doped with rare earth elements (La). , Ce, Pr, Nd, etc.), but the price of Pr and Nd is higher. Zhu Xilin reported on the application of an AB 5 hydrogen storage alloy not doped with Pr and Nd in a nickel-hydrogen battery. The square battery applied to the electric bus has been safely operated for 100 000 km. Another research hotspot for hydrogen storage materials is metal nitrogen hydrides such as Mg(BH 2 ) 2 -2LiH, 4MgH 2 &#8211; Li 3 AlH 6 , Al-Li 3 AiH 6 and NaBH 4 -CO(NH 2 ) 2 . Reducing the particle size and adding an alkali metal additive can improve the hydrogen storage performance of the metal coordination hydrogen storage material, wherein the particle size is reduced, which is mainly achieved by high energy mechanical ball milling. The Amine-Decorated12-Connected MOF CAU-1 material reported by Professor Sun Lixian of Guilin University of Electronic Technology has excellent H 2 , CO 2 and methanol adsorption properties, which are of great significance and application value for CO 2 emission reduction and hydrogen storage. They also developed A variety of aluminum-based alloy hydrogen-generating materials, such as 4MgH 2 -Li 3 AlH 6 , Al-Li 3 AiH 6 and NaBH 4 -CO(NH 2 ) 2 , are used in combination with fuel cells.<\/div>\n<h2>3 \u0645\u0643\u062b\u0641\u0627\u062a \u0641\u0627\u0626\u0642\u0629<\/h2>\n<div>\u0625\u0646 \u0627\u0644\u0628\u062d\u062b \u0639\u0646 \u0645\u0648\u0627\u062f \u0625\u0644\u0643\u062a\u0631\u0648\u062f \u0630\u0627\u062a \u0623\u062f\u0627\u0621 \u0639\u0627\u0644\u064d \u0648\u062f\u0648\u0631\u0629 \u062d\u064a\u0627\u0629 \u0637\u0648\u064a\u0644\u0629 \u0647\u0648 \u0645\u062d\u0648\u0631 \u0627\u0644\u0628\u062d\u062b \u062d\u0648\u0644 \u0627\u0644\u0645\u0643\u062b\u0641\u0627\u062a \u0627\u0644\u0641\u0627\u0626\u0642\u0629 \u060c \u0648\u0645\u0646 \u0628\u064a\u0646\u0647\u0627 \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a\u0629 \u0647\u064a \u0623\u0643\u062b\u0631 \u0645\u0648\u0627\u062f 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