Institute of Nuclear Energy Research

Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan

Maw-Chwain Lee

Tai-Nan Lin

Wei-Xin Kao

Yang-Chuang Chang

Chun-Hsiu Wang

Li-Fu Lin

Jen-Chen Chang

Rung-Je Yang

Lin-Song Lee

Ruey-Yi Lee

Yung-Neng Cheng

Szu-Han Wu

Yu-Tang Yang

Fun-Yeuan Hwang

Yuen-Liang Chen

The innovation process describes the process and results for fabrication of a magnetron sputter deposited fully dense electrolyte layer (8YSZ/GDC/LSGM) embedded in a high performance membrane electrolyte assembly (MEA) (Unit Cell) of Solid Oxide Fuel Cell. A single cell with airtight electrolyte layer (8YSZ/GDC/LSGM) is prepared via thin film technique of magnetron sputter deposition, combined with SOFC-MEA processing methods (such as tape casting, lamination, vacuum hot pressing, screen printing, spin coating, and plasma spray coating) and sintering optimization conditions. The gas permeability of the electrolyte layer is below 1&#xd7;10L/cm/sec and the open circuit voltage/power density of the single cell performance test exceeds 1.0 V and 500 mW/cm.

Process for fabrication of a sputter deposited fully dense electrolyte layer embedded in a high performance membrane electrolyte assembly of solid oxide fuel cell

A current collection apparatus and its method of processing for a solid oxide fuel cell, which mainly includes using screen printing process to print conductive adhesive onto the surface of the electrode of solid oxide fuel cell (SOFC), forming a current collection layer with drying process, using an appropriate amount of conductive adhesive to paste a conductive wire onto the current collection layer, forming an adhesion layer through drying, fixing the conductive wire on the electrode surface with an appropriate amount of ceramic adhesive, and forming a fixing layer after baking. A good connection is hence made between metal conductive wire and electrode through current collection layer, not only the interface impedance between electrode and current collection layer can be reduced effectively, but also the output power density of the SOFC unit cell can be enhanced, and stable as well as long term power output can be provided.

Current collection apparatus and method of processing for a solid oxide fuel cell thereof

A method and apparatus for energy conversion cycle based on Solid Oxide Fuel Cell (SOFC) and utilizing COsource (referred to as SOFC-CO-ECC) adopt COas energy sources from waste/stock gas or convert and fix it in the useful compounds. COis converted into CO and Ovia simultaneously catalytic and electrochemical reactions in SOFC for power generation and COcracking. Furthermore, CO is used either as the fuel in SOFC for power generation or starting materials in the chemical reactors to produce CO-derivatives of energy source materials and useful chemical compounds. Hence, SOFC-CO-ECC is an active or scientific carbon cycle with zero emission of CO.

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The present invention provides a measurement process for determination of the optimum contact pressure among components of a solid oxide fuel cell stack in the packaging process in order that the reduction in performance caused by the packaging process can be reduced. The present invention also provides a measurement apparatus which can carry the measurement process out.

Measurement process for determination of the optimum contact pressure among components of a solid oxide fuel cell stack in the packaging process and its measurement apparatus

The present invention is related to producing fine nano or submicron-scale precision ceramic powder by applying an innovative chemical reactor with powder collection to the glycine-nitrate combustion process (GNC-P). The unique feature lies in the utilization of a simple-operating process to massively produce nano or submicron-scale ceramic oxide powder with multiple metal components. The present invention not only provides very high powder collection efficiency and production yield as well as safety but also satisfies requirements of industrial safety and environmental safety, and lowers production cost.

Process to produce fine ceramic powder through a chemical reactor with powder collection device

This invention describes the recipe and preparation process of nano-scale electrolyte suspension and its application via a spin coating process for fabrication of airtight/fully dense electrolyte layers composed in solid oxide fuel cell-membrane electrode assembly with high performance characteristics. The recipe of nano-scale electrolyte suspension includes 10&#x2dc;50 wt % nano-scale electrolyte powder, 0.01&#x2dc;1 wt % poly acrylic acid (PAA as dispersant), 0.1&#x2dc;5 wt % poly vinyl alcohol (PVA as binder), 0.005&#x2dc;1 wt % octanol as defoamer, and deionized water as solvent. Solid oxide fuel cell fabricated via this recipe and process exhibits that the open-circuit voltage (OCV) is over 1 Volt, and maximum power density is 335 mW/cmat 800&#xb0; C.

Formulation of nano-scale electrolyte suspensions and its application process for fabrication of solid oxide fuel cell-membrane electrode assembly (SOFC-MEA)

A recipe and two sequential processes for fabrication of electrode substrates of solid oxide fuel cells (SOFCs) are described in this invention. The typical recipe consists of 50&#x2dc;86 wt % electrolyte (8YSZ) or 50&#x2dc;80 wt % anode electrode (NiO/8YSZ), 12&#x2dc;22 wt % MEK (solvent 1), 5&#x2dc;9 wt % EtOH (solvent 2), 1&#x2dc;2 wt % TEA (dispersant), 0.5&#x2dc;2 wt % DBP (plasticizer 1), 0.5&#x2dc;2 wt % PEG (plasticizer 2), 3&#x2dc;6 wt % PVB (binder), and 0.1&#x2dc;10 wt % graphite (pore former). Two sequential processes include: 1. The process for preparation of the green tape slurry from materials of the recipe, 2. The synergistic process for fabrication of a high integrity membrane electrode assembly (MEA) of SOFC from the prepared electrode substrates.

Synergistic process and recipe for fabrication of a high integrity membrane electrode assembly of solid oxide fuel cell

This invention describes the process for fabrication of a high conductivity and low resistance solid oxide fuel cell. An anode substrate is mainly prepared via tape casting technique and modified by abrasion and polish process. Electrolyte is fabricated onto the polished side by thin film technologies and can attach well in the cross section. Grinding surface of anode side about 10-30 &#x3bc;um after finish of MEA combination can get a high conductivity and low resistance unit cell and enhance cell performance effectively.

Process for anode treatment of solid oxide fuel cell&#x2014;membrane electrode assembly to upgrade power density in performance test

An automatic sampling method and facility are disclosed, by means of which multiple samples are obtained from a closed container filled with heterogeneous solid material. The sampling points are predetermined and well distributed on the container and the sampling position and depth in the container are selected by a special controller of the sampling system. The system can be operated at an open space for non-radioactive material. The obtained samples are collected and blended in a mixer for homogenization treatment to produce a final specimen for analytical measurement. The homogeneous specimen is well accepted for its representative character.

Growing community of inventors

Taoyuan County, Taiwan

Maw-Chwain Lee