Highly crystalline alumina surface coating from hydrolysis of aluminum isopropoxide on lithium-rich layered oxide

Molybdenum modified Montmonrillonite clay as an efficient catalyst for low temperature NH3‐SCR

“…The basal spacing was enlarged by 0.25 nm after Al-pillaring, which was wider than twice of the diameter of an Al 3+ ion (d = 0.106 nm, Al 3+ tetrahedral 4-coordinated). [30][31][32] These observations confirmed Al species had entered the interlayer space of the Mt clay. The small peak observed at 2⊔ = 9°for Al-PILC could be suggesting a very small fraction of the clay was not pillared.…”

“…For sample Al‐PILC, the (001) peak shifted toward a lower value of 5.08°, corresponding to a d‐value of 1.74 nm, thus, a basal spaces of 0.78 nm. The basal spacing was enlarged by 0.25 nm after Al‐pillaring, which was wider than twice of the diameter of an Al 3+ ion (d = 0.106 nm, Al 3+ tetrahedral 4‐coordinated) . These observations confirmed Al species had entered the interlayer space of the Mt clay.…”

“…The basal spacing increased 0.37 nm for AlZr‐PILC, illustrating the AlZr co‐pillaring was more effective than Al‐pillaring. This was due to the insertion of larger Zr 4+ ions (4‐coordinated, tetrahedral, diameter of 0.146 nm) . Al, Zr and AlZr intercalations was effective in ‘prop open’ the layered structure to achieve higher S BET and more porous structure for effective MnCe dispersion.…”

“…This was due to the insertion of larger Zr 4+ ions (4-coordinated, tetrahedral, diameter of 0.146 nm). [30][31][32] Al, Zr and AlZr intercalations was effective in 'prop open' the layered structure to achieve higher S BET and more porous structure for effective MnCe dispersion. To further quantify catalytic activities, the pseudo-first order rate constant (k, cm 3 ·g −1 ·s −1 ), its normalised value to the S BET (k/s ratio, the rate constant per unit area, when reactions take place at the boundary of the reactants and catalyst) were caculated and showed in Table 3.…”

Ameliorating Interfacial Issues of LiNi 0.5 Co 0.2 Mn 0.3 O 2 /Poly(propylene carbonate) by Introducing Graphene Interlayer for All‐Solid‐State Lithium Batteries

“…Figure a and 7b are the morphologies of c‐NCM and G@c‐NCM after cycling, respectively. Obvious cracks can be seen on the NCM523 particle in Figure a, cracked particles may finally fragmented and no longer available for reversible insertion/extraction of lithium ions, which results in capacity degradation . In contrast, thanks to the graphene interlayer, it can be seen in Figure b that the NCM523 particles are still intact and no cracks exist after cycling, which demonstrates that the graphene interlayer can protect the cathode from structural failure during the cycling process.…”