NO_x分解用電極支持型電気化学セルの作製

概要

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Bi-layers consisting of porous La_<0.6>Sr_<0.4>Co_<0.2>Fe_<0.8>O_<3-δ> (LSCF) substrate and dense film of Ce_<0.9>Gd_<0.1>O_<1.95>(CGO) have been successfully fabricated using slurry-coating process. A CGO powder dispersed in acetone was deposited onto a pre-sintered LSCF (containing 50 mass% CGO) substrate, and then co-fired such that the thin electrolyte was fully densified and the substrate remains highly porous. Co-fired CGO film was well bonded to the substrate; crack- and pinhole-free, and exhibited very low ohmic resistance. The NO decomposition properties of electrode-supported type electrochemical cell, LSCF (substrate) |CGO (film)| LSCF (screen-printed) were investigated. A strong correlation between the structure of the working electrode and the NO decomposition characteristics were observed. By using electrode-supported thin electrolyte, the required electric power for NO decomposition could be remarkably reduced.
社団法人日本セラミックス協会の論文
2002-06-01