Acta Materialia Inc. Family of Journnals’ Post

1.Graphite EPS(extrusion meth)S-33 introduced the infrared absorbing material -- natural flake graphite in the polystyrene polymer material by extrusion process. The graphite particles absorbed and reflected the radiant energy in the foamed beads, which improved the thermal insulation function of the flexible polystyrene core; 2. The thermal conductivity of S-33 is less than 0.033W/M.K, the thermal conductivity of ordinary EPS is 0.039W /M.K, and the thermal insulation performance of S-33 is improved by more than 20%. 3. Combustion performance reaches B1 level, oxygen index ≥30; 4.S-33 series products are mainly used for external wall insulation, especially suitable for energy-saving buildings; 5. High compressive strength, good dimensional stability of products; 6. High molecular weight. #epsrawmaterial #epsresin #styrofoammachine #styrofoamresin #expandedpolystyreneresin #foamresin #Polystyrèneexpansé #PSE #polystyreneresin #epsbead

Influence of chemical composition on the room temperature plasticity of <em>C</em>15 Ca-Al-Mg Laves phases https://lnkd.in/geZ39Uq6

Binders play a major role in lithium-ion batteries by maintaining the structural integrity and electrical connectivity of the electrodes. Their primary functions include but not limited to: ·        Holding the active material particles and conductive additives together in a cohesive composite electrode structure. This ensures good mechanical stability during charge/discharge cycles. ·        Ensuring good electrical contact between the active material particles and the current collector. This facilitates efficient electron transfer and enhances battery performance. ·        Accommodating volume changes in the electrode materials during cycling without cracking or losing contact. This flexibility contributes significantly to the battery's cycle life. ·        Aiding in creating a uniform slurry for smooth electrode coating during manufacturing. Uniform coatings are essential for consistent battery quality. ·        Protecting the electrodes from environmental factors like humidity and temperature variations. Polyvinylidene fluoride (PVDF) is a widely used binder due to its chemical stability, mechanical strength, and good adhesion properties. Binders must be chemically and electrochemically stable in the battery's electrolyte to prevent degradation. While typically making up less than 3% of the battery weight, binders are indispensable for maintaining the structural and electrochemical integrity of lithium-ion batteries. Their selection and optimisation are crucial for achieving high energy density, long cycle life, and overall battery performance. https://lnkd.in/gdXFBYhA #pvdf #lithium #nickel #cobalt #manganese

A EPI strategy for nickel-rich layered oxide electrodes. #batterytechnology #batterymaterials #batterydesign #batterymanufacturing #calenderingprocess #lithiumionbattery #energystorage #energyefficiency Increasing the electrode thickness, thereby reducing the proportion of inactive cell components, is one way to achieve higher-energy-density lithium-ion batteries. This, however, results in higher electronic and ionic overpotentials and/or mechanical failure induced by binder migration. Here, we report ethanol-induced phase inversion as an effective method for making high-mass-loading nickel-rich, layered oxide (LiNi0.8Mn0.1Co0.1O2 [NMC811]) electrodes. The ethanol-induced phase inversion electrodes significantly outperform their conventionally processed counterparts with similar loading (35 mg/cm2) and porosity (30%) in Li/NMC half-cells (131.7 mAh/g vs. 56.7 mAh/g) at 1C (7 mA/cm2) discharge. The binder structure induced by the nonsolvent improves the pore connectivity and results in lower tortuosity factors. The rapid solvent removal reduces the binder migration during drying, enabling ultrahigh active mass loadings up to 60 mg/cm2 (12 mAh/cm2). Further, the compatibility of the phase inversion process with current roll-to-roll coating setups makes this a processing technique with high industrial feasibility.

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1.Graphite EPS(extrusion meth)S-33 introduced the infrared absorbing material -- natural flake graphite in the polystyrene polymer material by extrusion process. The graphite particles absorbed and reflected the radiant energy in the foamed beads, which improved the thermal insulation function of the flexible polystyrene core; 2. The thermal conductivity of S-33 is less than 0.033W/M.K, the thermal conductivity of ordinary EPS is 0.039W /M.K, and the thermal insulation performance of S-33 is improved by more than 20%. 3. Combustion performance reaches B1 level, oxygen index ≥30; 4.S-33 series products are mainly used for external wall insulation, especially suitable for energy-saving buildings; 5. High compressive strength, good dimensional stability of products; 6. High molecular weight.#epsrawmaterial #epsresin #styrofoammachine #styrofoamresin #expandedpolystyreneresin #foamresin #Polystyrèneexpansé #PSE #polystyreneresin #epsbead

Shaped nickel foam is a revolutionary material offering customized solutions for diverse applications. It retains all the excellent properties of nickel foam, such as a porous structure, high electrical conductivity, and chemical stability, while being tailored into non-standard shapes like bends, curves, and perforations to meet specific geometric and device requirements. Widely used in batteries, catalysis, filtration, and heat dissipation, this advanced material is unlocking new possibilities for cutting-edge technologies. 🚀 #ShapedNickelFoam #InnovativeMaterials #AdvancedTechnology #NickelFoamApplications #Batteries #Filtration #HeatDissipation #MaterialScience

How does porosity impact the cost of a battery? Porosity in a battery is the empty space within an electrode (which also contains active material, conductive carbons, and binders). It is then filled with the liquid electrolyte, enabling better transfer of lithium ions during use. Tuning the porosity is key when tailoring the cells to specific applications. A higher porosity results in more contact with the active materials, and therefore greater rate capability, but typically at a lower volumetric energy density since more space is required due to the additional pores. Porosity can also impact the cost to produce a battery, due to changes in required materials. If we model an industry-average 160 Ah LFP-graphite prismatic cell and vary the porosity of both electrodes from 20 to 40%, we see how the cost jumps by around 6 $/kWh. This is due to an increased number of bi-cell layers, resulting in the requirement for more foil on both electrodes, a greater volume of electrolyte, and more cell packaging material. Therefore, performance and production costs are finely balanced, and optimising for both can be tricky. If you’d like to learn how you can use the CRU Battery Cost Model to aid in target setting during the cell design phase, please reach out! #sustainability #batteries #porosity #batterymaterials

Precision porous metal flow restrictors offer a reliable, cost-effective alternative to orifices, capillaries, and micro metering valves. By creating multiple random pathways, they reduce gas velocity, minimize wear, and last longer. Discover here: https://lnkd.in/eAPniWF9 #ascofiltrispa #innovation #precision #porous

Benefits from BATTBOND carbon coatings. 1) Improved electrical conductivity: Carbon coating increases the electrode's conductivity, which improves the battery's overall performance 2) Better mechanical strength: Carbon-coated aluminum/copper foil is more resistant to short circuits caused by dendrite growth 3) Longer service life: Carbon coating improves the battery's cycle life and overall longevity 4) Better adhesion: Carbon coating improves adhesion at the interface between the active layer and the current collector 5) Prevents corrosion: Carbon coating protects the substrate from corrosion caused by electrolyte https://lnkd.in/gziEKq8c