ACS Sustainable Chemistry & Engineering · 2017 · 31 citations · 42 references
EngineeringElectrode-electrolyte InterfaceKcl SolutionChemistryChemical EngineeringSodium BatteryMaterials ScienceSolid-state IonicBattery Electrode MaterialsInorganic SaltLithium-ion BatteryBattery AdditivesAdvanced Electrode MaterialSurface Kcl ModificationEnergy StorageSolid-state BatteryElectrochemical ProcessElectrochemistryLi-ion Battery MaterialsIonic ConductorCathode MaterialsBatteriesKcl ModificationFunctional Materials
Inorganic salt of KCl was first employed as an effective modifier to modify Li2ZnTi3O8 anode material via simply mixing in KCl solution followed by sintering at 800 °C in air. The Li2ZnTi3O8 modified with 1.0 wt % KCl exhibited splendid rate capabilities (retaining reversible capacities of 225.6, 195.4, 178.0, 162.4, and 135.6 mAh g–1 at 100, 200, 400, 800, and 1600 mA g–1, respectively) and excellent long-term cycling stability (maintaining a capacity of 201.6 mAh g–1 after 700 cycles). Combining structural characterization with electrochemical analysis, the KCl modification leads to simultaneous doping of K+ and Cl– in Li2ZnTi3O8, contributing to enhance the electronic and ionic conductivities of Li2ZnTi3O8.
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