title: Magnetic Cobalt Ferrite Nanocrystals For an Energy Storage Concentration Cell.
abstract: Energy-storage concentration cells are based on the concentration gradient of redox-active reactants; the increased entropy is transformed into electric energy as the concentration gradient reaches equilibrium between two half cells. A recyclable and flow-controlled magnetic electrolyte concentration cell is now presented. The hybrid inorganic-organic nanocrystal-based electrolyte, consisting of molecular redox-active ligands adsorbed on the surface of magnetic nanocrystals, leads to a magnetic-field-driven concentration gradient of redox molecules. The energy storage performance of concentration cells is dictated by magnetic characteristics of cobalt ferrite nanocrystal carriers. The enhanced conductivity and kinetics of redox-active electrolytes could further induce a sharp concentration gradient to improve the energy density and voltage switching of magnetic electrolyte concentration cells.
authors.affiliation: Department of Mechanical Engineering and Temple Materials Institute, Temple University, Philadelphia, PA, 19122, USA.
authors.forename: Qilin
authors.initials: Q
authors.lastname: Dai
authors.affiliation: Department of Mechanical Engineering and Temple Materials Institute, Temple University, Philadelphia, PA, 19122, USA.
authors.forename: Ketan
authors.initials: K
authors.lastname: Patel
authors.affiliation: Department of Mechanical Engineering and Temple Materials Institute, Temple University, Philadelphia, PA, 19122, USA.
authors.forename: Greg
authors.initials: G
authors.lastname: Donatelli
authors.affiliation: Department of Mechanical Engineering and Temple Materials Institute, Temple University, Philadelphia, PA, 19122, USA. shenqiang.ren@temple.edu.
authors.forename: Shenqiang
authors.initials: S
authors.lastname: Ren
keywords: cobalt ferrite; concentration cells; magnetic nanocrystals; oriented attachment