Mesoporous Ternary Nitrides of Earth-Abundant Metals as Oxygen Evolution Electrocatalyst

TY - JOUR

T1 - Mesoporous Ternary Nitrides of Earth-Abundant Metals as Oxygen Evolution Electrocatalyst

AU - Saad, Ali

AU - Shen, Hangjia

AU - Cheng, Zhixing

AU - Arbi, Ramis

AU - Guo, Beibei

AU - Hui, Lok Shu

AU - Liang, Kunyu

AU - Liu, Siqi

AU - Attfield, John Paul

AU - Turak, Ayse

AU - Wang, Jiacheng

AU - Yang, Minghui

PY - 2020/3/26

Y1 - 2020/3/26

N2 - As sustainable energy becomes a major concern for modern society, renewable and clean energy systems need highly active, stable, and low-cost catalysts for the oxygen evolution reaction (OER). Mesoporous materials offer an attractive route for generating efficient electrocatalysts with high mass transport capabilities. Herein, we report an efficient hard templating pathway to design and synthesize three-dimensional (3-D) mesoporous ternary nickel iron nitride (Ni3FeN). The as-synthesized electrocatalyst shows good OER performance in an alkaline solution with low overpotential (259 mV) and a small Tafel slope (54 mV dec −1), giving superior performance to IrO 2 and RuO 2 catalysts. The highly active contact area, the hierarchical porosity, and the synergistic effect of bimetal atoms contributed to the improved electrocatalytic performance toward OER. In a practical rechargeable Zn–air battery, mesoporous Ni 3FeN is also shown to deliver a lower charging voltage and longer lifetime than RuO 2. This work opens up a new promising approach to synthesize active OER electrocatalysts for energy-related devices.[Figure not available: see fulltext.].

AB - As sustainable energy becomes a major concern for modern society, renewable and clean energy systems need highly active, stable, and low-cost catalysts for the oxygen evolution reaction (OER). Mesoporous materials offer an attractive route for generating efficient electrocatalysts with high mass transport capabilities. Herein, we report an efficient hard templating pathway to design and synthesize three-dimensional (3-D) mesoporous ternary nickel iron nitride (Ni3FeN). The as-synthesized electrocatalyst shows good OER performance in an alkaline solution with low overpotential (259 mV) and a small Tafel slope (54 mV dec −1), giving superior performance to IrO 2 and RuO 2 catalysts. The highly active contact area, the hierarchical porosity, and the synergistic effect of bimetal atoms contributed to the improved electrocatalytic performance toward OER. In a practical rechargeable Zn–air battery, mesoporous Ni 3FeN is also shown to deliver a lower charging voltage and longer lifetime than RuO 2. This work opens up a new promising approach to synthesize active OER electrocatalysts for energy-related devices.[Figure not available: see fulltext.].

KW - Hard template

KW - Ni FeN

KW - Ordered mesoporous structure

KW - Oxygen evolution reaction

KW - Zn–air battery

UR - http://www.scopus.com/inward/record.url?scp=85082389571&partnerID=8YFLogxK

U2 - 10.1007/s40820-020-0412-8

DO - 10.1007/s40820-020-0412-8

M3 - Journal article

SN - 2150-5551

VL - 12

JO - Nano-Micro Letters

JF - Nano-Micro Letters

IS - 79

M1 - 79

ER -