Abstract:
평관형 고체산화물 연료전지의 제조방법이 개시된다. 개시된 평관형 고체산화물 연료전지의 제조 방법에 따르면, 전해질 시트, 연료극 시트, 개구부를 갖는 채널부 시트를 적층하여 다층 시트를 형성한다. 상기 다층 시트를 소결하여 유로를 포함하는 채널 지지층 및 연료극층, 상기 채널 지지층과 연료극층을 감싸는 튜브 형상의 전해질층을 형성한다. 상기 전해질층을 감싸는 튜브 형상의 공기극층을 형성한다. 따라서, 평관형 고체산화물 연료전지의 구조적 장점과, 평판형 고체산화물 연료전지의 작업상의 장점을 모두 가질 수 있다.
Abstract:
본 발명은 고체산화물 연료전지용 스택 및 그 제작 방법에 관한 것으로서, 보다 상세하게는 직병렬 구조로 전기를 생산할 수 있는 고체 산화물 연료전지용 스택 및 그 제작 방법에 관한 것이다. 본 발명에 따른 고체산화물 연료전지용 스택은 평관형 지지체의 전단면 및 외부면 일측에 제1전극과 연결된 제1전기연결재가 형성되고, 후단면 및 외부면 일측에 제2전극과 연결된 제2전기연결재가 형성된 단위 셀모듈을 제조하고, 상기 셀모듈의 외측면의 같은 극 끼리 연접되도록 적층하여 전기적으로 병렬연결된 단위 스택모듈을 제조하고, 상기 스택모듈의 전후면을 직렬 연결하여 직병렬 혼합식 고체산화물 연료전지용 일체형 (monolithic) 스택을 제조하는 것을 특징으로 한다. 본 발명에 따른 고체산화물 연료전지용 스택은 고체산화물 연료전지용 스택의 제작 방법에 있어서 가장 약점으로 지적되는 단위 셀들의 대면적화의 어려움, 직렬연결에만 의존한 스택 성능의 단위셀에 의한 직접적인 의존성, 적층에 의한 대형 스택의 제작의 어려움 등을 해결할 수 있다.
Abstract:
Featured are polymer electrolyte membranes based on blends of aromatic polyethers containing pyridine units in the main chain. Preferred membranes can show excellent mechanical properties and exceptional thermal and oxidative stability. Preferred polymer blends can be easily doped with inorganic acids such as phosphoric acid resulting in ionically conducting membrane.
Abstract:
A method of making a membrane electrode assembly includes forming an unbonded membrane electrode assembly and forming a bonding assembly by contacting a first surface of at least one absorbent material against at least one surface of the unbonded membrane electrode assembly, the at least one absorbent material containing a liquid. The membrane electrode assembly includes an anode gas diffusion layer, a cathode gas diffusion layer, an anode catalyst, a cathode catalyst, and a polymer electrolyte membrane interposed between the anode catalyst and the cathode catalyst. The method further includes heating the bonding assembly to effect bonding of at least two components, at least a portion of the liquid being removed.
Abstract:
The present invention relates to a solid oxide (or protonic ceramic) fuel cell, a cathode for a solid oxide (or protonic ceramic) fuel cell, and a method of making the same. More specifically, the cathode for a solid oxide (or protonic ceramic) fuel cell utilizes a phase-pure perovskite structure of the compound BaCo0.4Fe0.4Zr0.2−xYxO3−δ, where x is between about 0 and about 0.2. The cathode material may then be utilized in a SOFT or a PCFC as either a thin film porous cathode or as nanoparticles infiltrated into a cathode bone having a different structure.
Abstract:
Disclosed is a nanotubular intermetallic compound catalyst for a positive electrode of a lithium air battery and a method of preparing the same. In particular, a porous nanotubular intermetallic compound is simply prepared using electrospinning in which a dual nozzle is used, and, by using the same as a catalyst, a lithium air battery having enhanced discharge capacity, charge/discharge efficiency and lifespan is provided.
Abstract:
This invention relates to a single-phase perovskite-based solid electrolyte, a solid oxide fuel cell including the same, and a method of manufacturing the same. The method of the invention includes stirring and pulverizing a mixed oxide including lanthanum oxide (La2O3), strontium carbonate (SrCO3), gallium oxide (Ga2O3) and magnesium oxide (MgO); and obtaining an LSGM powder by subjecting the pulverized mixed oxide to primary calcination at a first temperature and then secondary calcination at a second temperature that is higher than the first temperature.
Abstract:
A process for forming a metal supported solid oxide fuel cell, the process comprising the steps of: a) applying a green anode layer including nickel oxide, copper oxide and a rare earth-doped ceria to a metal substrate; b) firing the green anode layer to form a composite including oxides of nickel, copper, and a rare earth-doped ceria; c) providing an electrolyte; and d) providing a cathode. Metal supported solid oxide fuel cells comprising an anode a cathode and an electrolyte, wherein the anode includes nickel, copper and a rare earth-doped ceria, fuel cell stacks and uses of these fuel cells.
Abstract:
Two active cell structures are prepared each comprising anode/electrolyte/cathode layers, each anode and cathode layer having embedded spaced-apart physical structures therein. Two interconnect sublayers are prepared, each comprising a layer of non-conductive material with holes formed therein and a conductor layer formed on one surface. The sublayers are placed together with the conductor layers in contact and with the holes offset to form an interconnect layer, which is then stacked between the two active cell structures. The multi-layer stack is laminated together and the anode layer of one active cell structure and the cathode layer of the other active cell structure fill the adjacent holes in the interconnect layer. The physical structures are pulled out to reveal embedded gas passages, and the multi-layer stack is sintered to form two active cells connected in series by the interconnect layer.