Carbon electrode for dye-sensitized betavoltaic batteries, betavoltaic battery including the same, and method of manufacturing the same
The present invention relates to a betavoltaic battery and a method of manufacturing the same. More specifically, the present invention relates to a betavoltaic battery characterized in that 14 C, a radioisotope, is formed in the form of quantum dots and 14 C is used as the cathode and the beta-ray source of the betavoltaic battery and a method of manufacturing the betavoltaic battery.
1 . A carbon electrode for betavoltaic batteries, comprising:
a support layer comprising a conductive substrate; and
a beta-ray source emission layer comprising organic carbon quantum dots comprising 14 C formed on the support layer, wherein the organic carbon quantum dots comprising 14 C comprise a fired product obtained by firing a polymer of a compound represented by Chemical Formula 2 below and quaternary ammonium ions:
wherein 14 C represents a radioisotope of carbon.
2 . The carbon electrode for betavoltaic batteries according to claim 1 , wherein the conductive substrate comprises one or more selected from fluorine tin oxide (FTO) glass, indium tin oxide (ITO) glass, indium zinc oxide (IZO) glass, aluminum zinc oxide (AZO) glass, and gallium zinc oxide (GZO) glass.
3 . The carbon electrode for betavoltaic batteries according to claim 1 , wherein the organic carbon quantum dots have a particle diameter of 4 nm to 20 nm.
4 . A betavoltaic battery, comprising the carbon electrode for betavoltaic batteries according to claim 1 as a cathode.
5 . A betavoltaic battery, comprising:
an anode;
a cathode disposed opposite the anode; and
an electrolyte,
wherein the anode and the cathode are bonded via an encapsulant, a space filled with the electrolyte is formed between the anode and the cathode, the space is filled with the electrolyte, and the cathode comprises the carbon electrode for betavoltaic batteries according to claim 1 .
6 . The betavoltaic battery according to claim 5 , wherein the anode comprises the support layer comprising the conductive substrate; and a TiO 2 layer onto which a ruthenium-based dye is adsorbed formed on one surface of the support layer.
7 . The betavoltaic battery according to claim 6 , wherein the TiO 2 layer onto which a ruthenium-based dye is adsorbed has an average thickness of 2 μm to 25 μm.
8 . The betavoltaic battery according to claim 6 , wherein the ruthenium-based dye is represented by Chemical Formula 3 or Chemical Formula 4:
wherein
COOTBA is a carboxylic acid group substituted with a tert-buty-alcohol group.