Abstract:
The present invention relates to an electrolyte solution for a redox flow battery including total organic active materials (total organic redox couples), and a redox flow battery using the same. The active materials used in the electrolyte solution for a redox flow battery according to the present invention uses the oxidation-reduction reaction of a nonmetallic organic compound instead of the oxidation-reduction reaction of metal ions, thereby achieving effects of enabling the battery to have high voltage and high capacity.
Abstract:
The present invention relates to a cathode catalyst for a lithium-air battery, a method for producing the same, and a lithium-air battery comprising the same. The method for producing a cathode catalyst for a lithium-air battery is characterized by comprising: a first step of mixing precursors of carbon nanofibers and precursors of metal oxides with a solvent to produce a solution of electrospinning; a second step of electrospinning the solution of electrospinning produced in the first step to form a metal oxide-carbon nanofiber complex; and a third step of treating the metal oxide-carbon nanofiber complex formed in the second step by heat. According to the cathode catalyst for a lithium-air battery produced by the method of the present invention, the oxygen reaction is accelerated in a cathode of a lithium-air battery to lower charging and discharging overvoltage and raise energy efficiency.
Abstract:
본 발명은 레독스 커플 담지 나노입자 및 이를 포함하는 레독스 흐름전지에 관한 것이다. 본 발명에 따른 레독스 커플 담지 나노입자는 레독스 흐름전지용 레독스 커플을 포함하는 용액에 미세기공을 포함하는 나노입자를 담지한 후 건조시켜 제조된 것을 특징으로 한다. 이러한 레독스 커플 담지 나노입자를 레독스 흐름전지의 양극전해질 또는 음극전해질 중 적어도 어느 한 곳에 포함될 수 있다. 상기 레독스 커플 담지 나노입자는 미세 기공을 가지고 있어 나노입자 기공 내부 또는 표면에 많은 레독스 커플을 포함하고 있어 레독스 커플의 고농도화가 가능할 뿐만 아니라 멤브레인을 통한 레독스 커플의 투과(cross-over)를 막을 수 있어 고에너지밀도 및 고효율 레독스 흐름전지를 제공할 수 있다.
Abstract:
PURPOSE: A capacitor electrode and a capacitor including the same are provided to implement high energy density by thermally processing lithium and manganese starting materials at low temperatures to minimize impurities. CONSTITUTION: Lithium starting materials are mixed with manganese starting materials. The mixed materials are thermally processed at 300 to 600 degrees centigrade for 1 to 40 hours under an air atmosphere or an oxygen atmosphere.