Multiphonon resonance Raman scattering in Landau-quantized graphene

Structural design and mechanism analysis of hierarchical porous carbon fibers for advanced energy and environmental applications

“…Qian's group produced PCFs with a large mesopore volume (2.3 cm 3 g −1 ) by carbonizing pre-oxidized PAN fibers in an atmosphere of CO 2 . 144 The optimal operating condition (950 °C for 12 h) gave a product with a specific surface area of up to 2404 m 2 g −1 and high mesopore (∼6.6 nm) ratio (up to 92.8%).…”

Recent developments in zinc metal anodes, cathodes, and electrolytes for zinc-ion hybrid capacitors

“…98 These strategies are applied in the design of N-doped MnO 2 , Na + intercalated MnO 2 , MnO 2 -CNT, and cathode materials. 100–102 The modified cathodes showed incredible enhancement in cycling life along with high specific capacitance and energy density. A ZIC system with an electrodeposited V 2 O 5 -PANI cathode and MXene anode ZnSO 4 /VOSO 4 hydrogel electrolyte showed a high capacitance of 584 mF cm −2 at current density 0.4 mF cm −2 .…”

“…Owing to the wide chemical and structural variety, the energy storage ability of MXenes has been analysed with theoretical and practical studies. 102,103,143,144 MXenes offer good hydrophilicity, high conductivity, atomically thin nanosheets, dispersibility in a variety of solvents, and fast ion diffusion coefficient for application in aqueous ZIC. 145 Moughan and co-workers analysed Ti 3 C 2 as the cathode material for ZIC and achieved a specific capacity of 189 mA h g −1 and 96% capacitance retention after 1000 cycles.…”

Interface engineering in the hierarchical assembly of carbon-confined Fe3O4 nanospheres for enhanced microwave absorption

“…31 Meantime, the heterointerfaces formed by carbon and magnetic materials significantly enhance interfacial polarization, leading to well-matched impedance. 32 For example, Huang et al reported a monolithic three-dimensional Fe 3 O 4 /graphene material with a wide bandwidth and strong absorption. 33 Duan et al synthesized Fe/MnO@C core–shell nanocapsules as effective microwave absorbers.…”