Advances and Challenges of Fe-MOFs Based Materials as Electrocatalysts for Water Splitting

Fe–Co–Ni trimetallic organic framework chrysanthemum-like nanoflowers: efficient and durable oxygen evolution electrocatalysts

“…The overpotential and corresponding current density indicate the excellent electrocatalytic efficiency of each electrode pair in the OER process, and the kinetics of the OER were evaluated from the Tafel slope derived from the corresponding LSV polarization curve. 37 As shown in Fig. 5c, the FCN-BTC MOF electrode showed the lowest Tafel slope of 29.3 mV dec −1 .…”

Synthesis and Applications of Stable Iron-Based Metal–Organic Framework Materials

“…However, introducing foreign metal atoms on Fe-MOFs can effectively improve the electrocatalysis of Fe-MOFs. 129 After doping of foreign metal atoms, more accessible active sites are exposed, and the synergistic effect between different metal atoms in the MOF structure is also conducive with improved electrocatalytic performance. For example, Lu et al prepared a bimetallic Fe-and Ni-MOF (MFN-MOF/NF) grown in situ on nickel foam and used it as a bimetallic functional electrode for alkaline water electrolysis (Figure 9).…”

Fe-Based metal–organic frameworks as functional materials for battery applications

“…More importantly, a typical feature of Fe-MOFs is the Fe unsaturated metal centers (UMCs), 15 the strong Fe–O coordination bond between unsaturated metal centers (Fe( iii )) and O atoms in organic ligands owing to the high energy density of Fe UMCs, which is consistent with Pearson's acid/base theory, leading to the favorable properties and chemical versatility of Fe-MOFs, such as high safety, high service life, support for rapid charging and a wide range of operating temperatures. 16–22 As early as 2007, a mixed-valence Fe-MOF, namely [Fe III (OH) 0.8 F 0.2 (O 2 CC 6 H 4 CO 2 )]·H 2 O (MIL-53(Fe)·H 2 O), was for the first time directly used as a cathode material for lithium-ion batteries, which is the first example of reversible electrochemical lithium insertion in the Fe-MOF system. 23 Unfortunately, this material had a poor capacity of about 70 mA h g −1 .…”