Oxygen vacancy-rich N-doped carbon encapsulated BiOCl-CNTs heterostructures as robust electrocatalyst synergistically promote oxygen reduction and Zn-air batteries

A NiFe/NiSe2 heterojunction bifunctional catalyst rich in oxygen vacancies introduced using dielectric barrier discharge plasma for liquid and flexible all-solid-state rechargeable Zn–air batteries

“…20,21 As recently reported, Yang et al synthesized oxygen vacancy-rich, N-doped and carbon encapsulated BiOCl-CNT heterostructures, which have excellent ORR catalytic activities with a high half-wave potential of 0.85 V (vs. RHE) in alkaline medium, and a high specic capacity (724 mA h g À1 @10 mA cm À2 ) for zinc-air batteries. 22 This is because introducing oxygen vacancies is an effective way to improve the conductivity and reduce the reaction energy barrier, so as to improve the electrocatalytic performance.…”

Electronic Modulation and Mechanistic Study of Ru‐Decorated Porous Cu‐Rich Cuprous Oxide for Robust Alkaline Hydrogen Oxidation and Evolution Reactions

“…Specifically, such a unique porous structure contributed to a high Brunauer–Emmett–Teller surface area of 72.7 m 2 g −1 with an adsorption average pore diameter of 3.76 nm, further implying the presence of mesopores in Ru/Cu−Cu 2 O@C [18] . The broad D (1346 cm −1 ) and G (1589 cm −1 ) bands of carbon provided in Raman spectroscopy corresponded to the defect/disorder density and graphitization of carbon [19] . Ru/Cu−Cu 2 O@C‐600 gave the lowest I D / I G value of 0.86, compared to Ru/Cu−Cu 2 O@C‐500 (0.95) and Ru/Cu−Cu 2 O@C‐700 (0.89), evidencing more sp 2 ‐hybridized carbon existed in Ru/Cu−Cu 2 O@C‐600, which was favorable for accelerating charge transfer (Figure 1d).…”

“…[17] Specifically, such a unique porous structure contributed to a high Brunauer-Emmett-Teller surface area of 72.7 m 2 g À 1 with an adsorption average pore diameter of 3.76 nm, further implying the presence of mesopores in Ru/ CuÀ Cu 2 O@C. [18] The broad D (1346 cm À 1 ) and G (1589 cm À 1 ) bands of carbon provided in Raman spectroscopy corresponded to the defect/disorder density and graphitization of carbon. [19] Ru/CuÀ Cu 2 O@C-600 gave the lowest I D /I G value of 0.86, compared to Ru/CuÀ Cu 2 O@C-500 (0.95) and Ru/CuÀ Cu 2 O@C-700 (0.89), evidencing more sp 2 -hybridized carbon existed in Ru/CuÀ Cu 2 O@C-600, which was favorable for accelerating charge transfer (Figure 1d). [20] Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were applied to ascertain the morphology of Ru/CuÀ Cu 2 O@C. During thermal decomposition, Cu-BTC was transformed into Ru/CuÀ Cu 2 O@C with good crystallinity and high monodispersity due to the Ostwald ripening effect.…”

Synthesis and characterization of an ultra-thin BiOCl/MXene heterostructure for the detection of NO2 at room temperature with enhanced moisture resistance

“…7d). 63 After binding with Ti 3 C 2 T x MXene, the oxygen species on the surface gradually changed from lattice oxygen to vacancy oxygen, and the chemically adsorbed oxygen on the surface gradually increased (Table S7†). The improvement in sensor performance is due to the excess of oxygen vacancies on the material surface caused by rapid oxidation kinetics.…”