3D printed hybrid-dimensional electrodes for flexible micro-supercapacitors with superior electrochemical behaviours

Ti3C2Tx (MXene)-wrapped V2O5/Fe2O3 composites for enhanced-performance supercapacitors

“…Comparing the Ragone plots of the MnO 2 //Ti 3 C 2 T x @VFO device and other SCs in the literature, the fabricated MnO 2 //Ti 3 C 2 T x @VFO ASC device exhibits an excellent energy density of 0.17 mW h cm À2 at 1.26 mW cm À2 , and a power density of 27.27 mW cm À2 at 0.05 mW h cm À2 . The performance of the device in this work is comparable with or even exceeds those in the previously reported studies, such as Ti 3 C 2 T x /CNF/PC (0.0024 mW h cm À2 ), 26 V 2 O 5 /rGO// activated carbon (0.0148 mW h cm À2 ), 27 V 2 O 5 /PEDOT (0.011 mW h cm À2 ), 28 PPy@Fe 2 O 3 @SSY (0.039 mW h cm À2 ), 29 Fe 2 O 3 /graphene/Ag (0.065 mW h cm À2 ), 30 and NCN@V 2 O 5 SMBs// NCN (0.072 mW h cm À2 ). 31 Furthermore, the device exhibits stable performance with a 74.92% capacitance retention after 5000 cycles at 6 mA cm À2 .…”

3D Printed Supercapacitor: Techniques, Materials, Designs, and Applications

“…Connecting multiple SCs in arrays is an uncomplicated and efficient way to increase energy density. [ 76,97,111,171 ] For instance, Wu et al. [ 131 ] prepared active carbon‐based MSCs arrays in series and parallel configurations by DIW (Figure 6j(i)).…”

3D‐Printed Wearable Electrochemical Energy Devices

“…The construction of hybrid‐dimensional nanostructures and the use of composite materials with the synergistic effect of both electrical double‐layer capacitive carbon materials and pseudocapacitive metal oxides or conducting polymers are effective approaches for improving the capacitance of MSCs. [ 59,159 ] For example, Tian et al. prepared a composite ink formulation using PVDF as a binder in N‐Methyl pyrrolidone (NMP) solvent, where 1D silver nanowires (NWs), 2D graphene nanosheets (NSs), and Fe 2 O 3 nanoparticles (NPs) work synergistically as active electrode materials ( Figure ).…”

“…prepared a composite ink formulation using PVDF as a binder in N‐Methyl pyrrolidone (NMP) solvent, where 1D silver nanowires (NWs), 2D graphene nanosheets (NSs), and Fe 2 O 3 nanoparticles (NPs) work synergistically as active electrode materials ( Figure ). [ 159 ] Owing to the highly conductive silver NWs, pseudocapacitive Fe 2 O 3 NPs, and 3D networks formed by hybrid‐dimensional materials, the solid‐state flexible MSC device with interdigitated electrodes exhibits a high areal capacitance of 412.3 mF cm −2 at 1 mA cm −2 and stable electrochemical performance (89% capacitance retention) for over 5000 charge and discharge cycles. Nevertheless, the existence of insulating polymer additives will inevitably affect the electrical conductivity and rate capability of the printed electrodes.…”