TY - JOUR
T1 - Construction of Ni-Co-Fe Hydr(oxy)oxide@Ni-Co Layered Double Hydroxide Yolk-Shelled Microrods for Enhanced Oxygen Evolution
AU - Niu, Qian
AU - Yang, Min
AU - Luan, Deyan
AU - Li, Nian Wu
AU - Yu, Le
AU - Lou, Xiong Wen (David)
PY - 2022/12/5
Y1 - 2022/12/5
N2 - The exploration of earth-abundant and efficient electrocatalysts toward the oxygen evolution reaction (OER) is critical for sustainable energy storage and conversion devices. In this work, we report a self-engaged strategy to fabricate a yolk-shelled OER electrocatalyst. Starting with a metal–organic framework, Co-Fe layered double hydroxide (LDH)@zeolitic imidazolate framework-67 (ZIF-67) yolk-shelled structures are formed in one step. Afterwards, these ZIF-67 building blocks are transformed into Ni-Co LDH nanocages to form the Ni-Co-Fe hydr(oxy)oxide@Ni-Co LDH yolk-shelled microrods (NiCoFe-HO@NiCo-LDH YSMRs) through an ion-exchange reaction. Owing to the structural and compositional merits, the NiCoFe-HO@NiCo-LDH YSMR electrocatalyst exhibits an overpotential of 278 mV to reach the current density of 10 mA cm−2, a small Tafel slope of 49.7 mV dec−1, and good stability in alkaline media. © 2022 Wiley-VCH GmbH.
AB - The exploration of earth-abundant and efficient electrocatalysts toward the oxygen evolution reaction (OER) is critical for sustainable energy storage and conversion devices. In this work, we report a self-engaged strategy to fabricate a yolk-shelled OER electrocatalyst. Starting with a metal–organic framework, Co-Fe layered double hydroxide (LDH)@zeolitic imidazolate framework-67 (ZIF-67) yolk-shelled structures are formed in one step. Afterwards, these ZIF-67 building blocks are transformed into Ni-Co LDH nanocages to form the Ni-Co-Fe hydr(oxy)oxide@Ni-Co LDH yolk-shelled microrods (NiCoFe-HO@NiCo-LDH YSMRs) through an ion-exchange reaction. Owing to the structural and compositional merits, the NiCoFe-HO@NiCo-LDH YSMR electrocatalyst exhibits an overpotential of 278 mV to reach the current density of 10 mA cm−2, a small Tafel slope of 49.7 mV dec−1, and good stability in alkaline media. © 2022 Wiley-VCH GmbH.
KW - Complex Hollow
KW - Hydr(oxy)oxide
KW - Metal–Organic Frameworks
KW - Oxygen Evolution Reaction
UR - http://www.scopus.com/inward/record.url?scp=85141667691&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85141667691&origin=recordpage
U2 - 10.1002/anie.202213049
DO - 10.1002/anie.202213049
M3 - RGC 21 - Publication in refereed journal
C2 - 36218244
SN - 1433-7851
VL - 61
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 49
M1 - e202213049
ER -
