A novel electrocatalyst for oxygen evolution reaction based on rational anchoring of cobalt carbonate hydroxide hydrate on multiwall carbon nanotubes

A sea anemone-like CuO/Co3O4 composite: an effective catalyst for electrochemical water splitting

“…In contrast, the CuO/Co3O4 composite electrode exhibits greatly enhanced catalytic activity with only an overpotential of 227 mV to drive the same current density. This overpotential is much lower than those behaviors of previously reported OER catalysts in alkaline conditions, including CCHH/MWCNT (285 mV) 14 , NiCo2O4 (320 mV) 3 , Co3O4 (320 mV) 9 , Cu/(Cu(OH)2-CuO) (417 mV) 4 , Mn3O4/CoSe2 (450 mV) 10 , α-Fe2O3 NA/CC (420 mV) 6 , α-MnO2-SF (490 mV) 15 , and comparable to the those best values reported, such as NiFe-LDHs(235 mV) 16 , NiFe-GO-LDHs(206 mV) 17 and NiFe-CNT-LDHs (223 mV) 8 . O2 productivity of CuO/Co3O4 composite electrodes is also measured (Fig.…”

Atomic‐Scale CoOx Species in Metal–Organic Frameworks for Oxygen Evolution Reaction

“…In addiation, the exchange current densities measure the catalytic activity of the films at overpotential of 0 V. The exchange current density of the as-prepared CoOx-ZIF was calculated to be 3.02×10 -7 A cm -2 , which is larger than most Co-based OER electrocatalysts in literarutes. [32][33][34] In alkaline condition, the mechanistic scheme of electrochemical water splitting could be descriped as [35][36] :…”

Simple Synthesis of Cobalt Carbonate Hydroxide Hydrate and Reduced Graphene Oxide Hybrid Structure for High-Performance Room Temperature NH3 Sensor

“…Cobalt carbonate hydroxide hydrate (Co(CO 3 ) 0.5 OH•0.11H 2 O), referred as CCHH has been usually utilized as the precursor to obtain Co 3 O 4 by annealing process at 300–500 °C [21,22,23]. CCHH has the potential to become a promising gas sensing material due to its simple synthesis process, high specific surface area and large three-dimensional space.…”