Capacity fading mechanism of Li2O loaded NiFe2O4/SiO2 aerogel anode for lithium-ion battery: Ex-situ XPS analysis

Development of NiFeSi mixed oxide catalysts for CO methanation

“…Pure SiO 2 peaks at 103.4 eV binding energy (Reddya et al 2011). Accordingly, the presence of silicon in the structure as a SiO 2 compound can be supported depending on this result (Balamurugan et al 2021). Peaks originating from Fe 2p1/2 and Fe 2p3/2 pairs in the catalyst structure were obtained depending on the catalyst composition and calcination temperature.…”

“…It is due to the fact that Fe 2p1/2 Fe +3 is in the Fe 2 O 3 composition. The Fe2p1/2 peak occurs in the catalyst structure due to the reduction of Fe to Fe +2 and metallic Fe 0 (Balamurugan et al 2021;Flak et al 2018). Damyanova et al (2020) stated in their study that the Ni 2p3/2 band changed in the range of 825.4-856.3 eV binding energies.…”

1D confined materials synthesized via a coating method for thermal catalysis and energy storage applications

“…160–162 However, with the increasing demand of high energy density devices and the decreasing of lithium reserves, efforts need to be made to develop other anode materials with high conductivity, high specific capacity, high rates for Li + ion uptake and release as well as small volume changes in addition to the commercial graphite anode. 163–165 Based on the reaction mechanisms, MO or metal sulfide (MS) anode materials of LIBs can be classified into three categories: 166–168 (1) the conversion-type which involves the formation/decomposition of Li 2 O and the reduction/oxidation of metal NPs (MO x + 2 x Li + + 2 x e − ↔ M + x Li 2 O, M = Fe, Co, Ni, Cu, Mn etc. ); (2) the alloying/dealloying reaction-type which refers to the reduction of MOs (M = Sn and Zn) by Li to M and their subsequent alloying with Li to form LiM x during the discharge process at low potentials (≤1 V); (3) the Li-intercalation/deintercalation reaction-type which has good structural stability including TiO 2 , MoO 2 , VO x , and Nb 2 O 5 .…”

“…[160][161][162] However, with the increasing demand of high energy density devices and the decreasing of lithium reserves, efforts need to be made to develop other anode materials with high conductivity, high specic capacity, high rates for Li + ion uptake and release as well as small volume changes in addition to the commercial graphite anode. [163][164][165] Based on the reaction mechanisms, MO or metal sulde (MS) anode materials of LIBs can be classied into three categories: [166][167][168] of Li 2 O. These three types of MO/MS anode materials usually have higher theoretical capacities compared to graphite anodes but poor electrical conductivity and large volume variation during cycling.…”

Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation

“…Recently, aerogels with remarkable comprehensive performances have aroused considerable attention in catalyst supports, sensors, thermal super-insulators and biomedical applications [ 7 , 8 , 9 ]. In particular, their low density, lightweight, high specific surface area, and porosity make them very suitable to remove hazardous pollutants and oils from water [ 10 , 11 , 12 ].…”