Ultrafast and stable ion/electron transport of MnNb2O6 in LIC/SC via interface protection and lattice defects

Experimental and theoretical investigation of the tuning of electronic structure in SnO2viaCo doping for enhanced styrene epoxidation catalysis

“…5a, the distinct signals at g = 2.002 correspond to the response of electrons trapped by OV. 55,56 The signal intensity of the Co-SnO 2 is much stronger than that of the P-SnO 2 , proving that the former owns far more OV compared to the latter. OV is regarded as an active ingredient that is stabilized by other active groups such as hydroxyl groups.…”

Multidefect N‐Nb2O5‐x@CNTs Incorporated into Capillary Transport Framework for Li+/Na+ Storage

“…The other two (at 399.2 and 400.4 eV) result from the N‐doping defect in the carbon tube. [ 38 ] Based on the high spectra of C1s and N1s, abundant N‐doping defects were produced on both CNTs and Nb 2 O 5 , guaranteeing the helpful electrochemical activity. In the O1s spectrum (Figure 2E), the presence of oxygen vacancies was confirmed by the 532.4 eV subpeak.…”

“…The large conductivity hollow CNTs still allow the Li + and electrons to be transferred synchronously, being of excellent dynamics at large current rates. [ 38 ]…”

“…The large conductivity hollow CNTs still allow the Li + and electrons to be transferred synchronously, being of excellent dynamics at large current rates. [38] The analysis of the energy storage mechanism is conducive to understanding the material advantage. According to Equation (S1) of the Supporting Information, CV curve peaks of N-Nb 2 O 5-x @CNTs and N-Nb 2 O 5-x @C half-cells at various current rates are analyzed respectively in Figure 5C.…”

N,S co-doped V3Nb17O50@C fibers used for lithium-ion storage

“…the dissolution of metal ions); secondly, the carbon layer protects the lattice channels constructed by heteroatom doping, moderates the inhomogeneity of Li + entering the lattice channels, and enhances the dynamic stability of ions/electrons. 14,15 Furthermore, the amorphous carbon layer, as a SEI layer to some extent, can work to lessen the continuous fracture/growth of the SEI film. 14 In fact, S-V 3 Nb 17 O 50 @NC offers a reversible capacity of 222.1 mA h g À1 at the current density of 0.1 A g À1 , and retains 86.2% specific capacity after 2000 cycles at the current density of 0.5 A g À1 .…”