Provided is a metal-air battery device for which deterioration of battery characteristics is suppressed. The metal-air battery device comprises: metal-air cells (10) having a positive electrode (13), a negative electrode (14) arranged facing the positive electrode, and an exterior body (10) that internally accommodates the positive electrode and the negative electrode; and a restricting member (21) that contacts the metal-air cells from the outside and partially restricts the metal-air cells to a prescribed thickness or less.
Titles:
Cobalt oxide/carbon nanotube composite material, preparation method thereof and application in lithium air battery
一种氧化钴/碳纳米管复合材料及其制备方法和在锂空气电池中的应用
Abstracts:
The invention discloses a cobalt oxide/carbon nanotube composite material, a preparation method thereof, and application in a lithium-air battery. The composite material is based on a rhombic dodecahedron ZIF‑8@ZIF‑67 double MOF material. The dodecahedron surface is wrapped with mSiO2 spheres, and then CNTs are derived by Co autocatalysis. The composite material of the present invention has a larger specific surface area, provides more catalytic active sites, and has excellent catalytic performance such as low overvoltage, high discharge specific capacity, and good cycle performance when used as a lithium-air battery cathode catalyst.
To provide a liquid detection sensor capable of, especially, integrally forming a liquid contact region in a separator to improve detection accuracy without increasing the number of components.SOLUTION: A liquid detection sensor comprises: a metal-air battery formed by laminating a positive electrode sheet, a negative electrode sheet and a separator intervened between the positive and negative electrode sheets; and a receiving part for receiving a detection signal obtained in the metal-air battery. The area of the separator is wider than those of the positive and negative electrode sheets; the area of the positive electrode sheet is wider than that of the negative electrode sheet; the separator has a detection region in which the positive and negative electrode sheets are overlapped to sandwich the separator and a liquid contact region exposed from the detection region to the outside; the liquid contact region overlapping with the positive electrode sheet is provided from the peripheral end of the negative electrode sheet to the outside; the peripheral end of the liquid contact region is positioned from the peripheral end of the positive electrode sheet to the outside; and the receiving part determines as liquid leakage when the level of the detection signal exceeds a threshold value.SELECTED DRAWING: Figure 3C
