Abstract:
PURPOSE: A production method of zirconium-doped cerium oxide is provided to produce the cerium oxide capable of being used as an activation catalyst in a metal-air secondary battery through a simple process using a combustion method. CONSTITUTION: Zirconium-doped cerium oxide is doped is denoted by chemical formula 1: Ce1-xZrxO2 (0.1
Abstract:
PURPOSE: An inner pressure measurement apparatus for a secondary battery is provided to measure an inner pressure inside the secondary battery generated from a charging/discharging process of the battery. CONSTITUTION: An inner pressure measurement apparatus(200) for a secondary battery comprises the following: an upper plate(210) including a pressure sensor(240), and a battery-fixing groove(214) to fix the battery; a lower plate(220) including another battery-fixing groove(224) on the facing position of the upper plate, and a charge/discharge connecting unit(260); and more than two supporters(230) fixed to two fixing units(270) on each plate to maintain the interval between the plates.
Abstract:
본 발명은 수소저장합금으로 이용되는 AB 5 계 분말을 환원제를 포함하는 알칼리 수용액으로 알칼리 수세화 처리함으로써 상기 수소저장합금 분말의 표면에서 니켈을 제외한 성분을 선택적으로 용출되게 함과 동시에 용출된 니켈과 코발트를 수소저저장합금의 표면으로 석출되게 하여 수소저장합금 분말의 표면을 개질시킬 뿐만 아니라 수소저장합금의 표면에 촉매상이 형성되게 함으로써 수명, 충방전효율 및 저온특성이 우수한 수소저장합금 전극을 제공하는 환원제를 포함하는 알칼리 수용액을 이용한 수소저장합금 표면 개질 방법에 관한 것이다. 수소저장합금, AB5계 분말, Ni-MH 이차전지, 환원제, 알칼리 수세화
Abstract:
The present invention relates to a metal-air secondary battery, more specifically to: aluminum-doped cerium oxide with a new composition having improved catalytic activity to be used as an activation catalyst for a metal-air secondary battery; a production method for the same; an air electrode for the metal-air secondary battery including the oxide as a catalyst; and the metal-air secondary battery including the air electrode.
Abstract:
본 발명은 금속공기 2차전지에 관한 것으로, 보다 구체적으로는 금속공기 2차전지에서 활성화 촉매로서 사용될 수 있도록 촉매활성을 보다 향상시킨 새로운 조성의 지르코늄이 도핑된 세륨산화물, 그 제조방법, 상기 산화물을 촉매로 포함하는 금속공기 2차전지용 공기전극 및 상기 공기전극을 포함하는 금속공기 2차전지에 관한 것이다.
Abstract:
PURPOSE: A manufacturing method of a nanostructured manganese dioxide is provided to manufacture the nanostructured manganese dioxide which has the high catalyst activity which is usable in the metal air secondary battery through the simple process by using the hydrothermal synthesis. CONSTITUTION: A nanostructured manganese dioxide has a nanorod shape in which the diameter is 15-110 nm and the length is 200-500 nm. The nanostructured manganese dioxide comprises as the tetragonal α-manganese dioxide crystal structure. The nanostructured manganese dioxide comprises K+. The manufacturing method of the nanostructured manganese dioxide comprises the following steps: a precursor which includes Mn2+ and an oxidizing agent which includes MnO4- are dissolved in water, and a reacting solution is prepared; the reacting solution is synthesized with the hydrothermal synthesis; and the precipitate which is generated from the hydrothermal synthesis reaction is collected. The precursor and the oxidizing agent have the mole ratio of 1:0.5-1:2. The precursor is the manganese sulfate (MnSO4), and the oxidizing agent is the potassium permanganate (KMnO4). The hydrothermal synthesis is performed in the autoclave at 140-160°C for 20-30 hours.