What is blade battery?5 answersA blade battery is a type of battery that has gained attention due to its technological advancements and safety features, particularly in the context of electric vehicles and blade servers. The blade battery design includes unique features such as a blade-type pin battery-connector, a blade electric car battery pack installing point structure, and the integration of batteries within blade servers for uninterrupted power supply. These batteries are crucial components in electric vehicles, where managing numerous cells efficiently is a challenge, leading to the proposal of modularized and distributed battery management systems for enhanced monitoring and control. Overall, blade batteries offer improved safety, simplified production techniques, reduced costs, and increased energy efficiency, making them a promising option for various applications.
What is Post embossing of thicker electrodes?4 answersPost embossing of thicker electrodes involves a novel stamping manufacturing technology to enhance the performance of thick electrodes. This technology aims to improve the areal energy density of batteries, thereby increasing the mileage of electric vehicles by promoting ion transportation and mechanical stability. By utilizing channels in the electrode to enhance electrolyte accessibility and reduce tortuosity, mass transfer, and charge transfer capabilities are improved. Additionally, stamp pressure during the operation process enhances adhesion between electrode materials and the current collector, leading to better mechanical stability. The stamped low-tortuosity electrode exhibited significantly higher capacity and improved stability compared to traditional bar-coated electrodes. This innovative approach not only enhances electrode performance but also offers industrialization prospects due to its low solvent consumption, scalability, and cost-effectiveness.
What the methods for fabrication of carbon coated silicon electrodes?5 answersThe fabrication methods for carbon-coated silicon electrodes involve various techniques. One approach includes coating a current collector with a slurry containing silicon particles, polymeric binders, and carbon fibers, followed by pyrolyzing the coated collector at specific temperatures to produce the electrode with a silicon-based host material. Another method combines a lithium source, a silicon source, and an organic carbon source, undergoing pre-lithiation reactions and high-temperature calcination to obtain carbon-coated silicon-based negative electrode materials. Additionally, a technique involves etching a porous silicon film on a silicon wafer, followed by secondary etching, ultrasonic stripping, and coating with sugar alcohol to create carbon-coated porous silicon materials. These methods aim to enhance electrode performance by addressing issues like volume expansion, conductivity improvement, and cycle life enhancement.
How does film thickness impact the resistivity of films?4 answersThe resistivity of films is influenced by their thickness. Thinner films exhibit a drastic increase in conductivity, while thicker films have lower carrier density. The resistivity behavior in these films follows the variable range hopping model, indicating disorder-induced localization of charge carriers. In the case of calcium manganese oxide (CMO) thin films, a remarkable decrease in resistivity is observed with decreasing film thickness, possibly due to oxygen deficiency promoted by tensile strain. For diamond-like carbon (DLC) coatings, an increase in thickness leads to a decrease in electrical resistance, attributed to an increase in the proportion of carbon atoms with sp2-hybridization and the appearance of additional π-bonds. In Nd0.7Sr0.3MnO3 thin films, resistivity increases in the insulating region and is analyzed based on the variable range hopping model.
What are weakness of screen print electrode?5 answersScreen print electrodes have several weaknesses. One weakness is that they may exhibit a decrease in transmittance when used in applications such as semi-transparent electrodes. Another weakness is that the screen-printing process may result in a decrease in the active electrode area, which can affect the adsorption properties and reproducibility of the electrode. Additionally, screen-printed electrodes may have limitations in terms of the types of substrates they can be applied to, with a preference for synthetic polymeric materials. Furthermore, the curing process for screen-printing pastes typically requires relatively low temperatures, which may limit the range of materials that can be used as substrates. These weaknesses highlight the need for further research and development to overcome these limitations and improve the performance of screen print electrodes.
How to design electrodes for children ?4 answersElectrodes for children can be designed by considering their specific needs and requirements. One approach is to use special electrodes and electrode holders that allow for rapid, accurate, and normative checking. These electrodes are designed to adhere to the chest without easily dropping off, ensuring reliable measurements. Another method involves using circular conductive rubber sheets coated with conductive viscose, which can be easily attracted to the chest skin and connected to a metallic crocodile clip. For brain electrical detection, a children dynamic brain electrical detection electrode can be used, which includes a circular electrode painted with conducting cream and fixed with adhesive tapes for reliable fixation and convenient detection. Additionally, medical electrode arrangements can be designed with smaller electrodes that can be releasably attached to larger electrodes, allowing for easy adaptation to pediatric applications. These electrode arrangements can also include sensing mechanisms to detect whether they are in an adult or pediatric configuration.