Facile structural tuning and compositing of iron oxide-graphene anode towards enhanced supacapacitive performance

Investigation of hematite nanorod–nanoflake morphological transformation and the application of ultrathin nanoflakes for electrochemical devices

“…Finally, akaganeite was converted to hematite in the post growth annealing process (Equation 4.3). [34] α-Fe 2 O 3 + 3H 2 O +2e -→ 2Fe(OH) 2 + 2OH -(Equation 4.1)…”

Template-grown graphene/porous Fe2O3 nanocomposite: A high-performance anode material for pseudocapacitors

“…Combining advantages of the above-mentioned strategies, this nanocomposite material exhibits much higher capacitance than most of reported Fe-based pseudocapacitive materials (e.g., Fe 2 O 3 nanotubes [11], FeOOH nanosheets [34], Fe 3 O 4 nanoparticles [35], C/Fe x O y nanocomposites [36,37], graphene/Fe x O y composites [38][39][40][41][42]). Moreover, a full ASC is assembled by using this material and a CoNi-layered double hydroxide (LDH)/carbon nanotube (CNT) composite as the anode and cathode materials, respectively.…”

2D Layered α‐Fe2O3/rGO Flexible Electrode Prepared through Colloidal Electrostatic Self‐Assembly

“…However, current research on supercapacitors has focused on their applications in electric vehicles, hybrid electric vehicles, and backup energy sources. Therefore, conventional supercapacitors is the rigid and bulky, which is not compatible with the flexible/wearable electronics . Recently, some attempts have demonstrated that all‐solid‐state flexible supercapacitor is particularly suitable for portable energy storage due to their excellent powder density, long operational lifespan, straightforward packaging with no liquid components, and using flexible electrode instead of rigid electrode, which can maintain the electrochemical properties under bending, folding and even twisting conditions .…”

“…Fe 2 O 3 as a promising transition metal oxide have be used in many fields, such as thermoelectric applications owing to its high thermoelectric power factor at room and elevated temperatures . Due to its low cost, natural abundance, low environment impact, relatively high theoretical capacity and suitable operating voltage, Fe 2 O 3 have also been used as an alternative negative electrode materials for supercapacitors . Unfortunately, its development is considerably hampered by the serious capacity delay from the relatively low electronic conductivity, large volume variations, and aggregation of Fe 2 O 3 particles.…”