Sn@SnO 2 attached on carbon spheres as additive-free electrode for high-performance pseudocapacitor

Synthesis and performance of PdMulti@HCS catalysts with Pd nanoparticles partially embedded in the inner wall of hollow carbon spheres for the direct synthesis of hydrogen peroxide from hydrogen and oxygen

“…As shown in Fig. 5(b), the local enlarged FT-IR spectra of Pd Multi @HCS catalyst shows that the CC bond stretching vibration peak appears at 1617 cm −1 , C–H bond stretching vibration peak appears at 1401 cm −1 , C–C bond stretching vibration peak appears at 1164 cm −1 , and –OH bond bending vibration peak appears at 1637 cm −1 53,54 respectively. In conclusion, the coated phenolic resin carbon precursor was carbonized at a high temperature under N 2 atmosphere to form the carbon shell of the Pd Multi @HCS catalyst, and at the same time, some oxygen-containing functional groups were formed in the carbon shell, which is consistent with high-resolution XPS results.…”

Hydrothermal Synthesis of Fe3+/3-Aminophenol–Formaldehyde as an Oxygen Electroreduction Catalyst in Alkaline Conditions

“…The synthesis procedures for APF and Fe 3+ /APF are illustrated in Figure , involving two steps of polymerization cross-linking in the hydrothermal reaction and carbonization, according to our previously reported procedure. , In a typical process, 0.5 g of 3-aminophenol and FeCl 3 ·6H 2 O (1.2 × 10 –3 mol) were first dissolved in 40 mL of ethanol and 100 mL of deionized water under vigorous agitation and heated up to 70 °C. Then, NH 3 ·H 2 O (0.6 mL) and formaldehyde solution (37 wt %, 0.8 mL) were added into the above solution.…”

Combination-based nanomaterial designs in single and double dimensions for improved electrodes in lithium ion-batteries and faradaic supercapacitors

“…Additionally, many conducting polymer nanoparticles (CP NPs) are also key factors, owing to their high capacitance, large surface area, high conductivity, low cost, and high stability [19] . Meanwhile, the valuable properties of TMOs, alloy nanoparticles and metal quantum dots such as high capacity, high electronic conductivity, and large energy density have already been described (Si 4200 mAh g −1 , Ge 1635 mAh g −1 , Sn 990 mAh g −1 , Sb 660 mAh g −1 ) [21] . The practical use of these materials, however, is severely hampered by the huge volume changes during discharge/charge processes, which cause pulverization, particle aggregation, and subsequently rapid capacity deterioration.…”