【公開日：2025.06.10】【最終更新日：2025.04.21】
課題データ / Project Data
課題番号 / Project Issue Number
24NU0259
利用課題名 / Title
水分解光電極の作製
利用した実施機関 / Support Institute
名古屋大学 / Nagoya Univ.
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）加工・デバイスプロセス/Nanofabrication（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）革新的なエネルギー変換を可能とするマテリアル/Materials enabling innovative energy conversion（副 / Sub）-
キーワード / Keywords
Photoelectrochemical, photoelectrode,電極材料/ Electrode material,スパッタリング/ Sputtering
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
王 謙
所属名 / Affiliation
名古屋大学大学院工学研究科
共同利用者氏名 / Names of Collaborators Excluding Supporters in the Hub and Spoke Institutes
Li Jianuo
ARIM実施機関支援担当者 / Names of Supporters in the Hub and Spoke Institutes
HONDA Anna
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）,技術補助/Technical Assistance
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
It is necessary to make powder semiconductors into photoelectrodes when we investigate the photoelectrochemical properties of the photocatalyst. Normal methods, such as drop-casting, cause large resistance on the ITO glass. According to the literature, a particle transfer method may alleviate the effects of large resistance. This method involves depositing two kinds of thin metal layers on the photocatalyst. We use the Titanium layer as the contact layer. However, the vacuum evaporator that we kept is hard to deposit Titanium owing to the high evaporation temperature (1400-1600 ℃). radio-frequency (RF) magnetron sputtering is a good choice for performing Ti coating.
実験 / Experimental
1. Dispersing 20 mg photocatalyst in 2 ml isopropanol and treated with ultrasonic cleaning for 40 min.2. The prepared solution was drop-casting on a 1*1 cm2 glass substrate and waited todry.3. The Titanium layer was coated on the photocatalyst layer with 100 nm thickness by sputtering.4. The conducting layer was coated on the contact layer with a 50 nm thickness by vacuum evaporation.5. The prepared sample was transferred to a glass substrate-supported carbon tape with multiple structures of “photocatalyst/Ti/Sn/carbon tape”.
結果と考察 / Results and Discussion
The prepared samples were linked with copper wire by coating conductive silver paste. Then the epoxy resin was smeared to increase the waterproofness.Photocurrents were collected using an electrochemical device coupled to a solar simulator. Photoelectrochemical measurements were performed in a standard three-electrode cell, including Ag/AgCl and Pt wire which acted as the reference electrode and counter electrode, respectively. The electrolyte employed is an aqueous 0.1 Na2SO4. When the voltages were fixed to 0, -0.4, -0.6, and -1.0 V, respectively, there was no photocurrent observed.The reason may caused by: the poor contact between the copper conductor and carbon tape; The Sn layers were too thick to transfer the electrons efficiently; and the amount of photocatalyst was too less after the ultrasonic cleaning process.
図・表・数式 / Figures, Tables and Equations
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
References:1. Chem. Sci., 2013, 4, 1120–1124.2. J. Am. Chem. Soc. 2015, 137, 6, 2227–22300.3. Materials Science and Engineering: B, 2010, 173, 275-278.
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件