Prussian blue analogues Mn[Fe(CN)₆]_0.6667·nH₂O cubes as an anode material for lithium-ion batteries

Abstract

In the present work, Prussian blue analogues, Mn[Fe(CN)6]0.6667·nH2O (Mn-PBA), were synthesized by a simple synthetic route and characterized by XRD, SEM, TEM, FTIR and TGA. When this material was firstly used as an anode for lithium-ion batteries, it exhibited a large capacity, good rate capability and cycling stability with a high Coulombic efficiency. For instance, a reversible capacity of 295.7 mA h g(-1) can be achieved after 100 cycles at 200 mA g(-1).

Transforming Nickel Hydroxide into 3D Prussian Blue Analogue Array to Obtain Ni2P/Fe2P for Efficient Hydrogen Evolution Reaction

“…After reacting with K 3 [Fe(CN) 6 ] for 24 h, the appearance of the peaks near the 2000–2200 cm −1 was the typical cyano‐bridge (CN). The two peaks near the 2156 and 2080 cm −1 were the stretching vibration of the Fe 3+ –CN and the Ni 2+ –CN that was also reported before . The shift of the OH group stretching vibration toward lower wavenumber was mainly from water molecule in the framework.…”

Low Voltage Charge/Discharge Behavior of Manganese Hexacyanoferrate

“…Figure 2a shows the charge/discharge curves of the Mn-PBA film in LIB. In the 1st discharge process, we observed irreversible capacity of 1400 mAh/g at voltage of 0.5 V. The capacity (=1400 mAh/g) of the 1st discharge process is slightly higher than those reported in literatures: 1000 mAh/g [16], 600 mAh/g [17], 1100 mAh/g [18], 1000 mAh/g [19], and 850 mAh/g [20]. The high irreversible capacity is probably ascribed to the thin film electrode and complete reduction reaction of PBA.…”

“…Recently, PBAs have been reported to show reversible low voltage charge/discharge behavior with high capacity (300-545 mAh/g) in LIBs [16][17][18][19][20]. Shokouhimehr et al [16] demonstrated that the Co-PBA nanoparticles show a reversible capacity of 544 mAh/g in the 0.01-3.0 V range against Li/Li + at current density of 100 mA/g.…”

Metal-Organic Frameworks for Batteries

“…31,102 For some PBAs, however, coordinated water could facilitate ion insertion, leading to a better rate capacity. 30,99 Although MOFs/MOF composites have shown potential as electrode materials for LIBs owing to the adjustable chemical compositions and crystalline porous structures, their practical applications are still hampered by many challenges: (1) the capacity and cycling stability of many MOF cathodes are not comparable with those of commercial cathode materials, such as LiCoO 2 ($140 mAh g À1 ) and LiFePO 4 ($170 mAh g À1 ). A judicious selection of metal ions/organic ligands with multiple redox-active sites and low molecular weights can be a way to achieving a satisfactory capacity.…”