Composition-controlled chemical bath deposition of Fe-doped NiO microflowers for boosting oxygen evolution reaction

被引：21

作者：

Battiato, Sergio ^{[1
,2
]}

Pellegrino, Anna Lucia ^{[3
]}

Pollicino, Antonino ^{[4
]}

Terrasi, Antonio ^{[1
,2
]}

Mirabella, Salvo ^{[1
,2
]}

机构：

[1] Univ Catania, Dipartimento Fis & Astron Ettore Majorana, Via Santa Sofia 64, I-95123 Catania, Italy

[2] Catania Univ Unit, CNR, IMM, Via Santa Sofia 64, I-95123 Catania, Italy

[3] Univ Catania, INSTM UdR Catania, Dipartimento Sci Chim, Viale Andrea Doria 6, I-95125 Catania, Italy

[4] Univ Catania, Dipartimento Ingn Civile & Architettura, DICAr, Viale Andrea Doria 6, I-95125 Catania, Italy

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 48期

关键词：

Electrocatalysts; Oxygen evolution reaction; Energy conversion; Chemical bath deposition; HIGHLY EFFICIENT; INTRINSIC ACTIVITY; WATER OXIDATION; NICKEL; ELECTROCATALYSTS; IRON; HYDROXIDE; ALKALINE; OXIDE; NANOSHEETS;

D O I：

10.1016/j.ijhydene.2023.01.330

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Water electrolysis for green hydrogen production is gaining tremendous attention in the quest towards sustainable energy sources. At the heart of water splitting technology are the electrocatalysts, which facilitate the two half-cell reactions, i.e., the hydrogen evolu-tion reaction (HER) and oxygen evolution reaction (OER), with the latter being the most thermodynamically uphill. Herein, we managed to fabricate Ni1-xFexO microflowers (mFs) with varying % of Fe doping (0 < x < 0.36) via an easy chemical bath deposition (CBD) method. The as-synthesized mFs drop-casted on graphene paper (GP) are then applied as electrocatalysts for OER. Compared to contrast catalysts, the electrocatalyst with xFe = 0.1 exhibits a lower overpotential of 297 mV at a current density of 10 mA cm-2, Tafel slope of 44 mV dec-1 and unprecedented turnover frequency of 4.6 s-1 at 300 mV. It is believed that this remarkable electrochemical performance mainly stems from the synergistic effects of

引用

页码：18291 / 18300

页数：10

共 63 条

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