Study of the preparation of NI–Mn–Zn ferrite using spent NI–MH and alkaline Zn–Mn batteries

Recycling Waste Batteries: Recovery of Valuable Resources or Reutilization as Functional Materials

“…The group also synthesized nanocrystalline Ni−Mn−Zn ferrites using spent Ni−MH and alkaline Zn−Mn batteries as raw materials. 98 The Ms values increased from 8.471 to 16.559, 19.582 and 26.883 emu/g and the Hc values decreased from 34.547 to 33.937, 32.852 and 27.877 Oe, as the size of the Ni−Mn−Zn ferrite particles increased from 30 to 38, 47 and 59 nm, respectively.…”

“…The Ms values increased from 35.326 to 38.993, 52.932 and 52.967 emu/g and the Hc values increased from 710.79 to 1172.8, 1179.7 and 1484.2 Oe, as the size of the NiCo ferrite particles increased from 25 to 33, 42 and 58 nm, respectively. The group also synthesized nanocrystalline Ni–Mn–Zn ferrites using spent Ni–MH and alkaline Zn–Mn batteries as raw materials . The Ms values increased from 8.471 to 16.559, 19.582 and 26.883 emu/g and the Hc values decreased from 34.547 to 33.937, 32.852 and 27.877 Oe, as the size of the Ni–Mn–Zn ferrite particles increased from 30 to 38, 47 and 59 nm, respectively.…”

ZnO@SnO2 Micron Flower as an Anode Material to Enhance the Cycling Performance of Zinc–Nickel Secondary Batteries

“…Among the reported advanced electrode materials, the hierarchical decussate structure composed of intersecting nanosheets can achieve ultralong stable cycling of zinc-ion batteries, and this structural design provides a direction for improving the cycling performance of Zn-based batteries. Moreover, as an important energy storage device, rechargeable batteries occupy a certain application market in industries such as smart electronics, electric vehicles, and portable devices. − Zinc-based batteries, especially Zn–Ni secondary batteries, are considered ideal green batteries due to their high operating voltage, low production cost, safety, and no memory effect. − However, Zn–Ni secondary batteries have difficulties in industrial application due to inevitable problems such as zinc dendrite growth, zinc anode deformation, poor cycling performance, and dissolution of active material in an alkaline electrolyte. − …”