Core–shell-structured and hydrogen-evolution-suppressing zinc anode for high stability Zn–Ni secondary batteries

Abstract

Bismuth anchored carbon coated ZnO (ZnO@C/Bi) with a unique core-shell structure was successfully prepared by a two-step solvothermal method and a subsequent calcination process. The ZnO@C/Bi presents a structure characteristic...

Oxygen Vacancies ZnO1–x as Anode Materials for Superior-Performance Zinc-Nickel Alkaline Batteries

“…The discharge capacity of ZnO decreases obviously with the increase of the cycle number (Figure e), while the discharge capacity of ZnO 1– x decreases relatively slowly (Figure f). Theoretically, a lower charge voltage plateau and a higher discharge voltage plateau imply a smaller electrode polarization . ZnO 1– x anode has a low charge voltage plateau and a high discharge voltage plateau.…”

“…Theoretically, a lower charge voltage plateau and a higher discharge voltage plateau imply a smaller electrode polarization. 50 ZnO 1−x anode has a low charge voltage plateau and a high discharge voltage plateau. Simultaneously, the charge and discharge voltages of the ZnO anode vary widely with the cycle, while the charge and discharge voltages of ZnO 1−x vary slightly.…”

Alkaline Ni−Zn Rechargeable Batteries for Sustainable Energy Storage: Battery Components, Deterioration Mechanisms, and Impact of Additives

“…However, it was also shown to reduce the internal resistance and increase both the coulombic efficiency and the discharge capacity to some extent. [69] Another approach was to anchor bismuth to carbon coated ZnO particles by the process illustrated in Figure 3(d), [65,70] resulting in the formation of a core-shell structure with a large specific area. As in the previous case, the HER rate is reduced, while the overall conductivity increases.…”

“…The suppression of HER as well as dendritic mitigation is due to the carbon coating's ion sieving action [65,70,71] and the greater bismuth overpotential for HER, which also leads to a lower corrosion rate in general. The first effect, as previously proven by various studies, significantly reduces Zn dissolution by reducing the redistribution, while still allowing hydroxides to pass through the porous carbon shell structure.…”

Hydrophobic dispersion-derived Si/rGO nanocomposites in SiOC ceramic matrix as anode materials for high performance lithium-ion batteries

“…3 However, owing to the restricted theoretical capacity (372 mA h g −1 ) of graphite and structural deterioration caused by repeated charging and discharging, its performance is not satisfactory for application in high-capacity and high-power batteries. 4,5 Among the various candidate materials for anode materials, such as silicon, 6 antimony, 7 tin, 8 and zinc, 9 which can replace graphite, silicon is in the spotlight as a next-generation high-capacity anode material because of its excellent characteristics. It has a theoretical capacity of 3570 mA h g −1 , which is ten times higher than that of graphite, is eco-friendly and has a relatively low operating voltage (∼0.4 V vs. Li + /Li).…”