Details

Autor(en) / Beteiligte

• Son, Youhyun
• Mo, Jeongmin
• Yong, Euiju
• Ahn, Jeongyeon
• Kim, Gyuchan
• Lee, Wonyoung
• Kwon, Cheong Hoon
• Ju, Hyun
• Lee, Seung Woo
• Kim, Byung-Hyun
• Kim, Myeongjin
• Cho, Jinhan

Titel

Highly efficient water-splitting electrodes with stable operation at 3 A cm−2 in alkaline media through molecular linker assembly-induced all-in-one structured NiMo and NiFe electrocatalysts

Ist Teil von

• Applied catalysis. B, Environmental, 2024-04, Vol.343, p.123563, Article 123563

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Developing nonnoble electrocatalyst-based water-splitting electrodes with high operational stability and low overpotentials is one of the most critical challenges in commercially available water-splitting reactions. In this study, we present water-splitting textile electrodes enabling remarkably low overpotentials and high stable operation. We first assembled conductive multi-walled-carbon-nanotubes (MWCNTs) with amine molecule-based linkers onto cotton textiles and subsequently electrodeposited Ni onto the MWCNT-incorporated textile. For the preparation of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrodes, NiMo and NiFe were further electrodeposited onto the Ni-electrodeposited textile electrode, respectively. These electrodes exhibited considerably low overpotentials in alkaline media (8 mV at 10 mA cm−2 for HER and 189 mV at 50 mA cm−2 for OER). Furthermore, the full-cell electrodes preserved a low cell voltage of 2.01 V at an unprecedentedly high current density of 3000 mA cm−2 for a prolonged duration (> at least 1000 h). [Display omitted] •Water splitting electrodes were prepared by MWCNT/TREN-induced electrodeposition.•Electrodeposited electrodes exhibit extremely low overpotentials.•Macro- and nanostructured textile electrodes enhance water-splitting reaction.•One-piece integrated structure-based electrodes have extremely high operational stability.