The sharp decline in ionic conductivity at the liquid-solid phase transition is an intrinsic limitation of organic electrolytes.In conventional organic electrolytes(COEs),crystallization triggers pronounced conductivi...The sharp decline in ionic conductivity at the liquid-solid phase transition is an intrinsic limitation of organic electrolytes.In conventional organic electrolytes(COEs),crystallization triggers pronounced conductivity loss and deviates from Arrhenius behavior,reflecting a fundamental shift in ion-transport mechanisms(Figure 1a)[1,2].In contrast,inorganic superionic conductors sustain fast ion transport in crystalline lattices when migration barriers are low and diffusion sites are energetically comparable[3,4].展开更多
Rechargeable aqueous Ni-ion batteries are potential candidates for future large-scale energy storage owing to their low-cost aqueous electrolytes.In this study,we report K_(2)Zn_(3)[Fe(CN)_(6)]_(2)(K-ZnHCF)as a possib...Rechargeable aqueous Ni-ion batteries are potential candidates for future large-scale energy storage owing to their low-cost aqueous electrolytes.In this study,we report K_(2)Zn_(3)[Fe(CN)_(6)]_(2)(K-ZnHCF)as a possible Ni^(2+)storage material in aqueous batteries.The reversible capacity of K-ZnHCF is found to be 54.3 mA h g^(-1 )over 2500 cycles with a low capacity decay of 0.0023%per cycle at 1 C.Even under the higher rate(10 C),the specific capacity can maintain about 50 mA h g^(-1).展开更多
文摘The sharp decline in ionic conductivity at the liquid-solid phase transition is an intrinsic limitation of organic electrolytes.In conventional organic electrolytes(COEs),crystallization triggers pronounced conductivity loss and deviates from Arrhenius behavior,reflecting a fundamental shift in ion-transport mechanisms(Figure 1a)[1,2].In contrast,inorganic superionic conductors sustain fast ion transport in crystalline lattices when migration barriers are low and diffusion sites are energetically comparable[3,4].
基金supported by the NSAF joint Fund(U1830106)the National Natural Science Foundation of China(U1632114).
文摘Rechargeable aqueous Ni-ion batteries are potential candidates for future large-scale energy storage owing to their low-cost aqueous electrolytes.In this study,we report K_(2)Zn_(3)[Fe(CN)_(6)]_(2)(K-ZnHCF)as a possible Ni^(2+)storage material in aqueous batteries.The reversible capacity of K-ZnHCF is found to be 54.3 mA h g^(-1 )over 2500 cycles with a low capacity decay of 0.0023%per cycle at 1 C.Even under the higher rate(10 C),the specific capacity can maintain about 50 mA h g^(-1).
