Fig. 1. Schematic illustration of the general crystal structure and redox reactions for PBA.
Fig. 2. (a) The synthetic procedure of PBAs consisting of coprecipitation, dissociation, nucleation, and crystal growth. (b) TGA curves measured at a scan rate of 10 °C min-1 from room temperature to 500 °C in N2 atmosphere (conventional coprecipitation-based PBA: RC-Na2CoFe(CN)6, controlled crystallization-based PBA: CC-Na2CoFe(CN)6). (c) The XRD profiles of the RC-Na2CoFe(CN)6 and CC-Na2CoFe(CN)6. (d) Charge/discharge profiles and (e) long-term cycling stability at a rate of 1 C and 5 C, respectively (1 C=130 mA g-1). Reproduced with permission.12) Copyright 2015, John Wiley and Sons.
Fig. 3. (a) The structure of PBMN. (b) The galvanostatic charge–discharge profiles of PBM, PBN and PBMN when measured in the range of 2.0~4.0 V at 10 mA g-1. (c) Cycling performance of PBM, PBN and PBMN when measured in the range of 2.0~4.0 V at 100 mA g-1. Reproduced with permission.16) Copyright 2014, The Royal Society of Chemistry.
Fig. 4. (a) The TGA curves and (b) IR spectra of air-dried and vacuum-dried Na2MnFe(CN)6. The TGA test was conducted at a heating rate of 5 °C min−1 under N2 atmosphere. Ex situ XRD patterns of (c) air-dried and (d) vacuumdried Na2MnFe(CN)6 at different states at the first cycle. (e) Rate capability of the vacuum-dried Na2MnFe(CN)6. (f) Cycling performance of vacuum-dried Na2MnFe(CN)6. Reproduced with permission.17) Copyright 2015, American Chemical Society.
Fig. 5. (a) A schematic mechanism for the removal of coordinated water from RGOPC. (b) The galvanostatic charge–discharge profiles of PB, RGOPC1, RGOPC2 and RGOPC3 when measured in the rage of 2.0~4.0 V at 30 mA g-1. (c) Cycling performance of PB, RGOPC1, RGOPC2 and RGOPC3 when measured in the rage of 2.0~4.0 V at 200 mA g-1. Reproduced with permission.18) Copyright 2015, The Royal Society of Chemistry.
Table 1. Elemental compositions of NaCoFe(CN)6 from controlled crystallization (CC-NaCoHCF) and NaCoFe(CN)6 from conventional coprecipitation reaction (RC-NaCoHCF). Reproduced with permission.12) Copyright 2015, John Wiley and Sons
Table 2. The atom occupation and d-spacing of PB, RGOPC1, RGOPC2 and RGOPC3. Reproduced with permission.18) Copyright 2015, The Royal Society of Chemistry.
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