Sodium fuel cell and cell stack containing sodium fuel cell

Abstract

The invention discloses a sodium fuel cell and a cell stack containing the sodium fuel cell. The sodium fuel cell comprises and is assembled sequentially by a cathode flow field plate, a gas cathode,an electrolyte membrane and an anode flow field plate, wherein the anode flow field plate and the electrolyte membrane form an anode flow channel in a surrounding mode. The sodium fuel cell also comprises an insulating trickling flow pipe; the inlet end of the anode flow channel is connected with a first insulating trickling flow pipe; the outlet end of the anode flow channel is connected with a second insulating trickling flow pipe; molten sodium is injected to the anode flow channel through the first insulating trickling flow pipe; and an oxidant is injected into the cavity between the cathode flow field plate and the gas cathode. As the inlet end and the outlet end of the anode flow channel of the sodium fuel cell are connected with the insulating trickling flow pipes respectively, continuously flowing molten sodium can be changed into non-continuous and mutually insulated droplets in the insulating pipe, and on the premise of ensuring uniform flowing of the molten sodium, electrical insulation during the delivery process is kept.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a sodium fuel cell and a cell stack containing the sodium fuel cell. Background technique [0002] The International Energy Agency proposed that in order to achieve the 2DS goal, the future development trend of automobiles is: the sales of traditional fuel vehicles will decrease rapidly, while the sales of pure electric vehicles and fuel cell vehicles will increase rapidly. By 2050, about 90% of the world's new passenger vehicles It will be a new energy vehicle. At present, new energy vehicles are mainly divided into lithium-ion pure electric vehicles (BEV) represented by Tesla (Tesla) and proton exchange membrane fuel cell vehicles (PEMFC) represented by Toyota Motor Corporation (Toyota). However, the key issue currently restricting the rapid development of new energy vehicles is the power battery. [0003] Lithium-ion batteries have the advantages of no fuel, zero emissi...

AI Technical Summary

Problems solved by technology

Liquid flow batteries mainly have low energy density and power density, and are currently difficult to use for large-scale electric energy storage.

In short, the rapid development of electric vehicles and wind and solar power generation has put forward a huge demand for batteries, and the existing battery technologies are difficult to meet the market demand, so the development of high power density, high energy density, low price, high safety New battery has big implications

[0008] The development needs of electric vehicles and large-scale electric energy storage put forward strict requirements on batteries. It is difficult for existing lithium-ion batteries, hydrogen fuel cells and other batteries to meet the requirements of energy density, power density, cost, safety, and life at the same time.

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