CN203553307U

CN203553307U - Metal air fuel cell with conical metal anode

Info

Publication number: CN203553307U
Application number: CN201320607472.4U
Authority: CN
Inventors: 刘甲祥; 晁自胜; 贺浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2014-04-16
Anticipated expiration: 2023-09-30

Abstract

The utility model discloses a metal air fuel cell with a conical metal anode. The metal air fuel cell comprises a housing, a metal electrode, an air electrode, an upper electrolyte cavity and a lower electrolyte cavity, wherein a partition plate with a hole at the middle is arranged in the housing, the housing is divided into an upper part and a lower part by the partition plate, a plurality of air holes are formed on the side wall at the upper part of the housing, an electrolyte perfusion port is formed at the top of the housing, and a liquid discharge port is formed at the bottom of the housing; the metal electrode is arranged in the housing in the shape of an inverted cone; the air electrode is in the shape of a conical surface and opposite to the conical surface of the metal electrode; the upper electrolyte cavity is constituted by a gap between the metal electrode and the air electrode, and the lower electrolyte cavity is constituted by the partition plate and the lower part of the housing. The utility model provides the metal air fuel cell which has the advantages of easiness in removal of an anode precipitate, relatively long maintenance period and relatively low using cost. Compared with the prior art, the metal air fuel cell has the advantages of easiness in removal of the anode precipitate, relatively long maintenance period and relatively low using cost.

Description

A kind of metal air fuel cell with cone-shaped metal anode

Technical field

The utility model relates to field of batteries, particularly a kind of metal air fuel cell.

Background technology

Traditional fossil energy not only resource reserve is limited, and in use brings a large amount of emissions, and this makes energy shortage and environmental pollution is that current social develops the two large outstanding problems that face.One of solution is exactly development of new alternative fuel.As electric power such as the water energy of clean energy resource, wind energy, solar energy, be difficult to directly on electrical appliance, directly use, need to as carrier, could use through energy storage material, so development of new battery becomes the key that new forms of energy develop.

Metal air fuel cell be a kind of with active metal as the battery of fuel, because it has very high energy density and specific power, lower cost, to advantages such as environment nontoxic pollution-frees, is considered to " green energy resource geared to the 21st century ".Metal-air cell take active metal if lithium, calcium, magnesium, aluminium, iron, zinc etc. are the active material of positive electrode of battery, active material of cathode take airborne oxygen as battery, mainly with alkalescence or neutral aqueous solution, be electrolyte, in discharge process, generate corresponding metal hydroxides.These hydroxide come off from surface of metal electrode with sedimentary form in electrolyte, are settled down to battery bottom.Scavenger precipitation thing when current technology is passed through periodic replacement electrolyte.Because metal anode and the air cathode distance of metal-air cell can not be too far away, in most cases, gap between anode and negative electrode is smaller, if the precipitation of hydroxide that surface of metal electrode produces comes off from electrode surface not in time, but continue below the precipitate particles of electrode surface growth or generation is too much deposited in metal anode and air cathode, the as easy as rolling off a log internal short-circuit of battery that causes, affects battery supplying power for outside.This makes the electrolyte replacement cycle of metal current air cell shorter, and the maintenance cost that causes battery to use is higher.

Summary of the invention

For the technical problem of above-mentioned existing metal-air cell, the utility model provides a kind of anodic deposition thing to be easy to length and the lower metal air fuel cell of use cost of eliminating, maintenance period.

The technical scheme that the utility model solves the problems of the technologies described above is: comprise housing, positive electrode cap, negative pole cap, as the metal electrode of anode, as air electrode and the electrolyte cavities of negative electrode, the dividing plate of perforate in the middle of being provided with in described housing, described dividing plate is divided into upper and lower two parts by housing; Described metal electrode is inverted cone-shaped and is located at housing top, and case top is fixed in the upper end of described metal electrode, and positive electrode cap is directly connected with metal electrode, and the lower end of described metal electrode is relative with dividing plate perforate; It is relative with the metal electrode conical surface that described air electrode is correspondingly conical surface shape, and the upper end of air electrode is connected with the negative pole cap of case top, and lower end is connected with dividing plate; In described housing upper portion side wall, offer multiple pores, case top is established electrolyte filling mouth, and described housing bottom is established leakage fluid dram.

In the above-mentioned metal air fuel cell with cone-shaped metal anode, described metal electrode is metal or metal alloy.

In the above-mentioned metal air fuel cell with cone-shaped metal anode, described air electrode comprises current collector layers and catalyst layer.

Owing to adopting technique scheme, the beneficial effects of the utility model are: the utility model adopts pyramidal structure, and the space that metal electrode and air electrode form is long and narrow, is convenient to anodic deposition thing and drops; The lower electrolyte cavities of lower housing portion, can store the reaction precipitation thing of peeling off from electrode surface in a large number under Action of Gravity Field, thereby avoid the deposit buildup of anode surface, the same large buffer memory of electrolyte cavities at present can improve the stability of battery and extend the maintenance period of battery, thereby reduces use cost; Leakage fluid dram can guarantee the timely eliminating of sediment and waste electrolyte, prevents from that sediment is deposited between anode and negative electrode to cause battery short circuit.

Accompanying drawing explanation

Fig. 1 is the structural representation of metal air fuel cell in preferred embodiment of the utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, the utility model comprise housing 6, as the metal electrode 3 of anode, air electrode 4, By Electrolysis sap cavity 7 and lower electrolyte cavities 8 as negative electrode.The dividing plate 11 of perforate in the middle of being provided with in described housing 6, described dividing plate 11 is divided into upper and lower two parts by housing 6; Described metal electrode 3 is inverted cone-shaped to be located in housing 6, and housing 6 tops are fixed in the upper end of described metal electrode 3, and the lower end of described metal electrode 3 is relative with dividing plate 11 perforates; It is relative with metal electrode 3 conical surfaces that described air electrode 4 is correspondingly conical surface shape, and housing 6 tops are fixed in the upper end of described air electrode 4, and the lower end of described air electrode 4 is connected with dividing plate 11; Air electrode 4 forms air cavity with sidewall and the dividing plate 11 of housing 6, in described housing 6 upper portion side wall, offers multiple pores 5, and air enters inside battery by pore 5 and participates in cathode reaction; Electrolyte filling mouth 10 is established at described housing 6 tops, for adding electrolyte; Leakage fluid dram 9 is established in described housing 6 bottoms, the sediment producing for discharging waste electrolyte and discharge process; Described By Electrolysis sap cavity 7 consists of the gap between metal electrode 3 and air electrode 4, for the reacting environment of metal electrode, described lower electrolyte cavities 8 consists of dividing plate 11 and the bottom of housing 6, can store a large amount of electrolyte and anodic deposition thing, By Electrolysis sap cavity 7 and lower electrolyte cavities 8 interconnect by the space of dividing plate 11, and electrolyte is full of upper and lower electrolyte cavities; Described housing 6 tops arrange respectively positive electrode cap 1 and negative pole cap 2, and positive electrode cap 1 is directly connected with metal electrode 3, and negative pole cap 2 is connected with air electrode 4, by two polar cap supplying power for outsides.

Claims

1. the metal air fuel cell with cone-shaped metal anode, comprise housing, positive electrode cap, negative pole cap, as the metal electrode of anode, as air electrode and the electrolyte cavities of negative electrode, it is characterized in that: the dividing plate of perforate in the middle of being provided with in described housing, described dividing plate is divided into upper and lower two parts by housing; Described metal electrode is inverted cone-shaped and is located at housing top, and case top is fixed in the upper end of described metal electrode, and positive electrode cap is directly connected with metal electrode, and the lower end of described metal electrode is relative with dividing plate perforate; It is relative with the metal electrode conical surface that described air electrode is correspondingly conical surface shape, and the upper end of air electrode is connected with the negative pole cap of case top, and lower end is connected with dividing plate; In described housing upper portion side wall, offer multiple pores, case top is established electrolyte filling mouth, and described housing bottom is established leakage fluid dram.

2. the metal air fuel cell with cone-shaped metal anode according to claim 1, is characterized in that: described metal electrode is metal or metal alloy.

3. the metal air fuel cell with cone-shaped metal anode according to claim 1, is characterized in that: described air electrode comprises current collector layers and catalyst layer.