An efficient and durable bifunctional electrocatalyst based on PdO and Co2FeO4 for HER and OER

Rational Design of FeCo-S/Ni2P/NF Heterojunction as a Robust Electrocatalyst for Water Splitting

“…Compared to the individual FeCo-S, the positions of the Fe 2p 3/2 and Fe 2p 1/2 peaks have shifted to lower energy by 0.7 and 2.7 eV, respectively. It is indicate that the Co 2p spectrum of FeCo-S-Ni 2 P/NF exhibits six typical peaks at 774.8, 779.8, 785.4, 792.4, 795.7, and 800.2 eV, corresponding to Co 3+ , Co 2+ , satellite peak, Co 3+ , Co 2+ , and satellite peak (Figure c). , Compared to the individual FeCo-S, the positions of the two Co 2+ peaks have shifted to lower energy by 1.4 and 2.0 eV. Notably, characteristic peaks of FeP and CoP were not detected, indicating that the composition of FeCo-S coated on NF did not change during the phosphorization process, further confirming the successful synthesis of the FeCo-S/Ni 2 P/NF heterostructure.…”

Ultrafast Response and High Selectivity of Diethylamine Gas Sensors at Room Temperature Using MOF-Derived 1D CuO Nano-Ellipsoids

“…Figure S7d,f depicts the O 1s photoelectron spectra with high resolution for CuO-400 NEs, CuO-600, and CuO-800. In this spectrum, the oxygen species on the surface of the oxygen carrier are primarily composed of lattice oxygen (O L ), O v , and chemisorbed oxygen (O abs ) with binding energies of 529.23, 530.87, and 534.0 eV, respectively. , XPS is a complex and powerful tool for finding O v in composites Table S3 shows the peak location as well as the relative contents of the O L , O v , and O ads species.…”

Recent Progress on Nickel- and Iron-Based Metallic Organic Frameworks for Oxygen Evolution Reaction: A Review

“…Electrochemical water splitting (EWS) is an exciting new technology, a renewable, safe, and eco-friendly energy source for producing clean fuels such as hydrogen and oxygen gases with zero carbon emission . The fact that EWS comprises two half-reactions: the sluggish four-electron transfer oxygen evolution reaction (OER) and the easy two-electron transfer hydrogen evolution reaction (HER). , OER needs multiphase electron transfer connected to a proton and a significant overpotential to get past the slow kinetics, preventing the water splitting from happening. Additionally, the OER reaction is hampered by two key terminologies: slow kinetics and significant overpotential values. , Investigating an efficient and durable electrocatalyst with high electrocatalytic activity is necessary to address these issues. , …”

“…2 The fact that EWS comprises two half-reactions: the sluggish four-electron transfer oxygen evolution reaction (OER) and the easy two-electron transfer hydrogen evolution reaction (HER). 3,4 OER needs multiphase electron transfer connected to a proton and a significant overpotential to get past the slow kinetics, preventing the water splitting from happening. Additionally, the OER reaction is hampered by two key terminologies: slow kinetics and significant overpotential values.…”