Specific cases of anti-corrosion design for battery cells
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Corrosion and Protection in Lithium Batteries
Common corrosion problems in lithium batteries include electrochemical corrosion of aluminum current collectors and stainless steel, as well as galvanic corrosion of metallic lithium. To suppress these corrosions, researchers have developed a variety of strategies. For instance, by optimizing the surface treatment of the electrolyte and the aluminum current collector, the corrosion of the aluminum current collector can be effectively reduced. In addition, surface coatings and bulk or grain boundary doping that protect metallic lithium from external environmental influences can reduce the reaction kinetics at the solid-liquid interface, thereby inhibiting the corrosion of lithium.
Anti-corrosion design of sodium-sulfur batteries
In sodium-sulfur batteries, an aluminum alloy casing is a common choice, but it is prone to corrosion by sodium polysulfide. To enhance the battery's corrosion resistance, researchers sprayed a coating containing nickel and chromium on the inner surface of the aluminum alloy casing. This coating can not only effectively delay the corrosion cycle of the casing, but also maintain the electrical conductivity of the casing and reduce the impact of corrosion on the increase of battery internal resistance.
Battery anti-corrosion in deep-sea environments
In deep-sea environments, battery casings need to withstand the dual challenges of high salt spray and high pressure. Researchers have constructed high-performance anti-corrosion coatings by using MXene composite coatings in combination with materials such as epoxy resin, polyurethane, and conductive polymers. This coating exhibits excellent protective performance in deep-sea environments and can effectively prevent the corrosion of battery casings.
START-STOP LITHIUM battery
Enov start-stop battery is designed to provide excellent performance for high-demand start-stop vaehicles. It adopts the third-generation intelligent lithium platform architecture to achieve technological breakthroughs in core indicators such as cycle life, environmental adaptability and energy density. Compared with the traditional lead-acid battery system, the energy efficiency is increased by 210%, the cycle life is extended by 8-10 times, and the monthly self-discharge rate is controlled within 3%. Enov's unique low-temperature battery technology makes a breakthrough in achieving stable output in the whole climate domain from -30℃ to 65℃, maintaining more than 90% of the effective capacity release under extremely cold conditions (-30℃), and maintaining 90% of the capacity in high temperature environments (65℃).
The start-stop battery series products cover the mainstream voltage platform of 12V/24V/48V, and support flexible configuration of LFP (lithium iron phosphate) and NCM (lithium nickel cobalt manganese oxide) dual-material system. All models adopt modular design to support customization of different model specifications. Enuo engineering and technical team to provide full cycle technical service support, if you need, please contact us.
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