Insights into the Formation, Chemical Stability, and Activity of Transient 
NiyP@NiOx Core-Shell Heterostructures for the Oxygen Evolution Reaction

Wilde, Patrick; Dieckhöfer, Stefan; Quast, Thomas; Xiang, Weikai; Bhatt, Anjali; Chen, Yen-Ting; Seisel, Sabine; Barwe, Stefan; Andronescu, Corina; Li, Tong; Schuhmann, Wolfgang; Masa, Justus

doi:10.1021/acsaem.9b02481

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Insights into the Formation, Chemical Stability, and Activity of Transient NiyP@NiOx Core-Shell Heterostructures for the Oxygen Evolution Reaction

MPS-Authors

/persons/resource/persons209224

Li, Tong
Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Institute for Materials & ZGH, Ruhr-Universität Bochum, Germany;

/persons/resource/persons255575

Masa, Justus
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Wilde, P., Dieckhöfer, S., Quast, T., Xiang, W., Bhatt, A., Chen, Y.-T., Seisel, S., Barwe, S., Andronescu, C., Li, T., Schuhmann, W., & Masa, J. (2020). Insights into the Formation, Chemical Stability, and Activity of Transient NiyP@NiOx Core-Shell Heterostructures for the Oxygen Evolution Reaction. ACS Applied Energy Materials, 3(3), 2304-2309. doi:10.1021/acsaem.9b02481.

引用: https://hdl.handle.net/21.11116/0000-0007-D510-6

要旨

NiyP emerged as a highly active precatalyst for the alkaline oxygen evolution reaction where structural changes play a crucial role for its catalytic performance. We probed the chemical stability of NiyP in 1 M KOH at 80 degrees C and examined how exposure up to 168 h affects its structure and catalytic performance. We observed selective P-leaching and formation of NiyP/NiOx core-shell heterostructures, where shell thickness increases with ageing time, which is detrimental for the activity. By tuning the particle size, we demonstrate that prevention of complete catalyst oxidation is essential to preserve the outstanding electrochemical performance of NiyP in alkaline media.