Ni3s2-Embedded Nife Ldh Porous Nanosheets with Abundant Heterointerfaces for High-Current Water Electrolysis
Ni 3 S 2 -embedded NiFe LDH heterostructured porous nanosheets were in situ grown on nickel foam (Ni 3 S 2 -NiFe LDHs /NF) via a one-pot solution method mediated by NaHS at room temperature in 15 min. Benefiting from the abundant Ni 3 S 2 -NiFe LDH interfaces, the as-prepared catalyst delivers 50, 500 and 1000 mA cm −2 with an overpotential of only 230, 285 and 303 mV for oxygen evolution reaction, respectively, registering as one of the best performing non-precious metal OER catalysts. In situ and ex situ analysis reveal that the Ni 3 S 2 was in situ partially transformed under electrooxidation environment into NiOOH over an equally important electrically conductive Ni 3 S 2 to drive proficient catalysis. This strategy can be extended to fabricate Ru-Ni 3 S 2 -NiFe LDHs/NF electrocatalyst for high active hydrogen evolution reaction. Coupling these two catalysts achieved remarkable current densities of 10, 100 and 500 mA cm −2 at low voltages of 1.47, 1.71 and 1.85 V upon driving overall water splitting, respectively, superior to the performance of current industrial catalysts (200-400 mA cm −2 at 1.8-2.40 V)
Year of publication: |
[2022]
|
---|---|
Authors: | Wu, Shuwen ; Liu, Shao-Qing ; Tan, Xuehai ; Zhang, Wenyao ; Cadien, Ken ; Li, Zhi |
Publisher: |
[S.l.] : SSRN |
Saved in:
freely available
Saved in favorites
Similar items by person
-
Flame Normalizing-Induced Robust and Oriented Metallic Layer for Stable Zn Anode
Zhai, Shengli, (2022)
-
Capabilities for collaborative innovation of technological alliance : a knowledge-based view
Zhang, Wei, (2021)
-
Zhang, Wenyao, (2017)
- More ...