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The performance of lithium-ion batteries and fuel cells

by:UFO      2020-05-16
Traditional lead-acid batteries. Lead-acid batteries, low specific energy in new energy vehicle weight needed to take up the overall quality and volume is larger, a charge may be driving course is shorter; Late, short service life and the cost is high. In addition, the lead-acid battery charging time long, lead is a heavy metal, there is pollution, and the concept of new energy vehicle.

lithium-ion batteries used in great quantities in the mobile phone, computer and other equipment. Fuel cell is born for electric/hybrid cars. Use of hydrogen and oxygen chemical reaction to produce electricity, its combustion products is very small amounts of carbon dioxide and water, almost has no effect on the environment. Then what for electric vehicles, the choice of lithium batteries or fuel cells? Who also not settled yet, but we can through the following set of contrast to the two types of batteries. Cost

cost is high, the hydrogen production process complex become the main obstacle of the development of fuel cell. Hydrogen gas or steam restructuring by electrolysis. But cost is high, the two methods for making the cost of the same quality of natural gas of 1/2 or 1/3 of hydrogen production.

lithium-ion battery production cost is relatively low, in addition its rechargeable use is very convenient, compared to other portable energy, it has more cost effective.

environmental impact of the environmental impact of fuel cell and lithium ion battery are small. The products of combustion for water, won't produce gasoline/diesel combustion after generation of greenhouse gases.

lithium ion battery discharge product may by lithium oxide, lithium hydroxide, etc. , will not impact on the environment. In addition, the lithium ion battery can be reused.

based on the above points, the two types of cells became the most popular electric power supply at present.

using polymer membranes in fuel cells as electrode, support after the hydrogen and oxygen reaction to generate electricity. Polymer membranes must pass special processing to withstand high temperatures and mechanical stress.

lithium ion battery of lithium ion adsorption charge, so the cells have storage capacity. The quality of the lithium ion is very light, so is the power source of the ideal car. Potential

both fuel cell and lithium ion battery technology is still have a lot of room for improvement. If it can reduce the cost of fuel cells can really as gasoline/diesel fuel alternative energy sources.

for lithium battery, if can further improve its energy density, cycle life can be longer, the energy is also a very good driver. Challenge

for fuel cell, there are a number of technical problems waiting to be solved. Platinum catalyst, for example, the high cost, complex technology of sealing technology, huge hydrogen-storage tanks and start for a long time.

the facing problems in the development of lithium ion batteries are less common charging infrastructure. Therefore, as long as the set up good charging infrastructure and charging network, the problem will be solved. Recently, Toyota, Honda, mitsubishi, nissan four car companies signed an agreement to jointly built in Japan charging infrastructure and build charging network; All these laid the foundation for the lithium battery technology application.

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