Abstract
Recent progress in the development of water oxidation electrocatalysts has mainly focused on achieving high performance in a single measurement, while the importance of durability has not yet been deeply studied. Additionally, oxygen evolution reaction (OER) involves a phase transition from a liquid to a gas, and thus, the removal of the generated oxygen bubble is an important factor for improving the activity or maintaining the performance. In this study, 3D ordered nanoporous nickel electrode is synthesized with a thickness of 5 µm by using a templating method composed of proximity field nanopatterning (PnP) and electrodeposition followed by introduction of NiFe(OH)2 on the nickel electrode to increase the OER activity. The unique nanopore array structure of the electrode has advantages of not only an enlarged active surface area but also the fast removal of oxygen bubbles by spatial confinement effect. Consequently, the NiFe-decorated 3D ordered nanoporous nickel electrode shows a highly efficient oxygen-evolving ability with a turnover frequency of 2.9 s−1 and an ultralong durability of 300 h.
| Original language | English |
|---|---|
| Pages (from-to) | 184-191 |
| Number of pages | 8 |
| Journal | Nano Energy |
| Volume | 54 |
| DOIs | |
| Publication status | Published - 2018 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Electrical and Electronic Engineering
Cite this
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Suppressing buoyant force : New avenue for long-term durability of oxygen evolution catalysts. / Kim, Sungsoon; Ahn, Changui; Cho, Yoonjun; Hyun, Gayea; Jeon, Seokwoo; Park, Jong Hyeok.
In: Nano Energy, Vol. 54, 01.12.2018, p. 184-191.Research output: Contribution to journal › Article
TY - JOUR
T1 - Suppressing buoyant force
T2 - New avenue for long-term durability of oxygen evolution catalysts
AU - Kim, Sungsoon
AU - Ahn, Changui
AU - Cho, Yoonjun
AU - Hyun, Gayea
AU - Jeon, Seokwoo
AU - Park, Jong Hyeok
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Recent progress in the development of water oxidation electrocatalysts has mainly focused on achieving high performance in a single measurement, while the importance of durability has not yet been deeply studied. Additionally, oxygen evolution reaction (OER) involves a phase transition from a liquid to a gas, and thus, the removal of the generated oxygen bubble is an important factor for improving the activity or maintaining the performance. In this study, 3D ordered nanoporous nickel electrode is synthesized with a thickness of 5 µm by using a templating method composed of proximity field nanopatterning (PnP) and electrodeposition followed by introduction of NiFe(OH)2 on the nickel electrode to increase the OER activity. The unique nanopore array structure of the electrode has advantages of not only an enlarged active surface area but also the fast removal of oxygen bubbles by spatial confinement effect. Consequently, the NiFe-decorated 3D ordered nanoporous nickel electrode shows a highly efficient oxygen-evolving ability with a turnover frequency of 2.9 s−1 and an ultralong durability of 300 h.
AB - Recent progress in the development of water oxidation electrocatalysts has mainly focused on achieving high performance in a single measurement, while the importance of durability has not yet been deeply studied. Additionally, oxygen evolution reaction (OER) involves a phase transition from a liquid to a gas, and thus, the removal of the generated oxygen bubble is an important factor for improving the activity or maintaining the performance. In this study, 3D ordered nanoporous nickel electrode is synthesized with a thickness of 5 µm by using a templating method composed of proximity field nanopatterning (PnP) and electrodeposition followed by introduction of NiFe(OH)2 on the nickel electrode to increase the OER activity. The unique nanopore array structure of the electrode has advantages of not only an enlarged active surface area but also the fast removal of oxygen bubbles by spatial confinement effect. Consequently, the NiFe-decorated 3D ordered nanoporous nickel electrode shows a highly efficient oxygen-evolving ability with a turnover frequency of 2.9 s−1 and an ultralong durability of 300 h.
UR - http://www.scopus.com/inward/record.url?scp=85055107847&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055107847&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2018.10.009
DO - 10.1016/j.nanoen.2018.10.009
M3 - Article
AN - SCOPUS:85055107847
VL - 54
SP - 184
EP - 191
JO - Nano Energy
JF - Nano Energy
SN - 2211-2855
ER -