静電噴霧法による固体高分子形燃料電池触媒層の形成
Preparation of Polymer Electrolyte Memebrane Fuel Cell Catalyst Layer with Electrospray Deposition

ESD

固体高分子形燃料電池の触媒層は電気化学反応が起こる非常に重要な部分です。触媒層は表面積をできるだけ大きくするとともに水素・酸素ガス,電子,イオンがスムーズに運ばれる必要があります。現在,触媒層はエアスプレーやスクリーン印刷で作ることが一般的ですが,我々は静電噴霧法と呼ばれる手法で作成し性能向上を狙っています。静電噴霧法は高電圧を用いて触媒を非常に細かな霧状にする技術で,触媒層の構造を制御することができます。また,一つ一つの触媒粒子は静電気で狙ったところに引き寄せられるため製造時の無駄も大幅に削減できます。
The catalyst layers of fuel cells are an important component where the electrochemical reaction takes place. The catalyst layer must have large surface area as well as high transportation property for hydrogen, oxygen, electron and ion. In general, the catalyst layer is prepared with air spray or screen printing techniques. We are trying to obtain high performance controlling the catalyst layer structure with electrospray technique, which applies high voltage to the spray nozzle to make very small catalyst/ionomer particles. Besides, we can improve catalyst utilization in manufacturing.

 発表論文/Publication

S. Okuno and N. Katayama, “Gradational Structured Catalyst Layer for Proton Exchange Membrane Fuel Cells,” ECS Transactions, vol. 83, no. 1, pp. 87–91, Feb. 2018.

T. Yuki, N. Katayama, M. Takahashi, K. Tsuchiya, H. Sakai, and M. Abe, “Effects of Ionomer to Carbon Ratio and Operation Conditions in Direct Glucose Fuel Cells,” ECS Transactions, vol. 83, no. 1, pp. 145–149, Feb. 2018.

T. Yamanaka, N. Katayama, and S. Kogoshi, “Fabrication of Catalyst Layers for Anion Exchange Membrane Fuel Cells By Using Electrospray Deposition.,” ECS Transactions, vol. 71, no. 1, pp. 211–215, Feb. 2016.