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Lithium-ion battery equalization takes a long time during discharge. Since the discharge speed is related to the resistance of the load resistor, balancing during system operation is inefficient. If equalization is performed during discharge and the equalization time is expected to be short, an external power transistor with a small on-resistance must be connected. This type of transistor is very common, such as MOSFET or FET. If you want to equalize quickly during discharge, you have to connect a low-value resi

Researchers from Rice University in the United States said that the electrolytic capacitor has excellent performance like a supercapacitor and can maintain a high battery capacity of 76% after thousands of charges and discharges or thousands of bends. James Tour, a chemistry professor at Rice University in the United States, and his colleagues recently developed an electrolytic capacitor that is thinner than paper. It is reported that this electrolytic capacitor has the characteristics of flexibility and large b

As a device that converts chemical energy into electrical energy, the battery has developed from the "Leyden Jar" in 1746 to the present, and has been divided into nearly 20 categories. In recent years, new batteries that have attracted market attention have emerged one after another. For example, hydrogen fuel-powered lithium batteries can generate electricity with near-zero carbon emissions by separating electrons in hydrogen gas and generating electric current. Many governments and automobile compan

Proton exchange membrane fuel-powered lithium battery (pEMFC) is a power generation device with the advantages of high specific power, high energy conversion efficiency, low-temperature start-up, and environmental friendliness. In recent years, it has still been a research hotspot in the field of fuel-powered lithium batteries. Its core component, the membrane electrode (MEA), is usually prepared by a hot pressing process from a gas diffusion layer, a catalytic layer and a proton exchange membrane. Key materials su

The vertical methanol fuel-powered lithium battery (DMFC) is a power generation device that converts the chemical energy stored in the fuel methanol solution and the oxidant (oxygen or air) vertically into electrical energy. Its significant advantages are: abundant sources of methanol fuel and low cost. The energy density is high. When the battery is working, the fuel is fed straightly without reforming. The structure is simple, the reaction time is short, the operation is convenient, and it is easy to carry and st

Lithium-ion batteries are an ideal power source due to their high operating voltage, small size, light weight, no memory effect, no pollution, small self-discharge, and long cycle life. In actual use, in order to obtain a higher discharge voltage, at least two single lithium-ion batteries are generally connected in series to form a lithium-ion battery pack. At present, lithium-ion battery packs have been widely used in notebook computers, electric bicycles and backup power supplies. Therefore, how to use the lithi

Lithium-ion batteries are representatives of modern high-performance batteries and are composed of four important parts: positive electrode material, negative electrode material, separator, and electrolyte. Among them, the separator is a thin film with a microporous structure. It is the key inner component with the most technical barriers in the lithium-ion battery industry chain. It plays the following two important purposes in lithium-ion batteries: a. Separating lithium-ion batteries. The positive and negative e

Fuel power cells directly convert chemical energy (fuel) into electrical energy. They have the advantages of high efficiency and low pollution. In recent years, they have received great attention from all aspects. Molten carbonate fuel cells (MCFC) operate at high temperatures (about 650C) and can use exhaust waste heat and gas turbines to generate electricity. Therefore, they have higher efficiency and are one of the mainstreams of current fuel cell research. Many achievements have been made in MCFC fuel power

Lithium-ion battery manufacturers briefly talk about the advantages and material research of all-solid-state secondary lithium-ion batteries. As the most potential electrochemical energy storage device, all-solid-state lithium-ion batteries have received widespread attention in recent years. With the improvement of comprehensive technical indicators such as cyclability and safety, the application market of solid-state secondary lithium-ion batteries will gradually expand, and all-solid-state lithium-ion batteries a