Efficient energy storage in mustard husk derived porous spherical carbon nanostructures

Abstract

An environment-friendly synthesis of highly porous spherical carbon nanostructures (PSCN), in situ doped with N and S, from mustard seed waste has been accomplished. The synthesised PSCN has an interconnected...

Graphene/C2N lateral heterostructures as promising anode materials for lithium-ion batteries

“…In other words, these G/C 2 N-LHs can be formed through the chemical bond interaction between graphene (including n atom chains) and C 2 N (including m-n atom chains) portions, and are named (n, m), where m is the total number of atom chains in the rectangular supercell. In this study, three species of (5,26), (11,26) and (17,26) are chosen to explore the graphene component effects on electronic properties and Li ion diffusion behavior. In order to eliminate the influence of dangling bonds at the heterojunction interface, hydrogen passivation is introduced to maintain sp 2 hybridization for all C atoms.…”

“…1 However, the current performance of LIBs falls short in terms of theoretical capacity and power density, making it challenging to meet the growing demands in the field of new energy vehicles. [2][3][4][5] Thereby, a promising approach to develop high-power LIBs involves the exploration of novel electrode materials with high electronic conductivity for efficient electron transport and large surface areas to facilitate rapid ion diffusion.…”

Microwave-plasma induced one-step synthesis of Ni(PO3)2 nanosphere-loaded bio-waste derived N, P co-doped carbon for an asymmetric supercapacitor with prolonged life

“…For example, sulphur (S) doped carbon has been developed from waste tea leaves under microwave irradiation to achieve a capacitance of 144.7 F g −1 at 1 A g −1 but with limited capacitance retention (∼54%) performance up to 10 000 cycles. 9 Similarly, N, 10 oxygen (O), 11 P, 12 fluorine (F), 13,14 and boron (B) 15 doped/co-doped bio-waste derived carbon-based supercapacitive electrodes have been investigated but either they suffer from low capacitance and short cycle life or they require multi-step synthesis which limits the scale of production and affordability. So, composites of bio-waste derived carbon and suitable transition metal based pseudocapacitive materials like phosphates, 16 phosphides, 17 oxides 18,19 and chalcogenides 20 have been tested to achieve high capacitance with the pseudocapacitive contribution from pseudocapacitive materials and controlled rate and cycle performance from the bio-waste derived carbon network.…”

Nitrogen Self-Doping Carbon Derived from Functionalized Poly(Vinylidene Fluoride) (PVDF) for Supercapacitor and Adsorption Application

“…Carbon has been widely used for electrode materials for supercapacitors due to moderate cost and superior electrochemical stability [ 21 , 22 ]. Moreover, carbon cannot offer higher capacitance due to the poor conductivity.…”