Porous carbon from lignocellulosic biomass with emphasis on corn plant waste residue for energy storage

Urchin-like NiCo2O4/hierarchical porous graphitic carbon spheres as ultrahigh-performance supercapacitor electrodes

Quaternary synergy–driven oxide loading boosts the MCDI performance of porous biomass-derived carbon

Porous C-rich carbon nitride decorated with Co species based on heptazine supramolecular assembly for boosting CO2 photoreduction

Bimetallic sulfide, with its high theoretical capacity, is one of the preferred anodes for high-energy-density potassium ion batteries (PIBs). However, its low conductivity, high volume expansion, and slow electrode reaction kinetics have limited its practical application. This study developed a freeze-drying-calcination coupled strategy to fabricate a porous nitrogen-doped carbon matrix embedded with Ni3Sn2S2 bimetallic sulfide nanoparticles (Ni3Sn2S2@NC). The enhanced electrochemical kinetics are primarily attributed to the strong electronic interactions between Ni and Sn atoms within the hexagonal crystalline framework. The reduced adsorption energy of potassium ions (K+) and the significantly enhanced diffusion coefficient (∼2.88×10-10cm2/s) are attributed to the electronic coupling effect within the bimetallic sulfide phase. The electronic interaction effectively promotes both K+ transport and electron transfer during charge/discharge cycles, thereby delivering the Ni3Sn2S2@NC composite with good specific capacity (∼667.7mAh/g at 0.1A/g) and ultralong cycling stability at high rates (∼170.6mAh/g under 2.0A/g after 2000cycles). When assembled with perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) as the cathode in PTCDA||KFSI-DME||Ni3Sn2S2@NC, the device achieves a high energy density of ∼226Wh/kg with stable cycling performance. This work introduces a valuable perspective for the kinetic engineering of high-rate electrodes through intrinsic electronic structure modulation.

Atomically dispersed copper in biomass-derived porous carbon for high-performance supercapacitors

A novel process for fabricating SiCf/SiC by liquid silicon infiltration using CVI-derived porous carbon in fiber preform

Efficient bromide recovery from seawater and desalination brine is increasingly critical for renewable energy storage and industrial applications, yet conventional electrochemical systems struggle with selectivity in chloride-dominated matrices. We report bromide-selective composite electrodes (BrSCE) that integrate anion-exchange resin particles within activated carbon matrices, creating a dual-pathway architecture where ion selectivity enhances electrochemical separation. The composite design positions resin microspheres throughout the porous carbon network, enabling simultaneous capacitive deionization and selective ion exchange under applied voltage. Systematic parameter optimization identified critical performance factors: resin loading (20–50%), feed solution Cl − : Br − ratios (1: 1 to 5:1), and applied voltage (0.8–1.6 V ), yielding quadratic predictive models (R 2 > 0.97, p < 0.0001) for both selectivity and desalination efficiency. The optimized BrSCE (43.6 wt% resin content, 1.2 V) achieved Br − /Cl − selectivity of 2.83 in challenging 5:1 Cl − : Br − molar ratio solutions, directly addressing the primary limitation in halide separation from real brines. Notably, the system demonstrated exceptionally rapid bromide recovery kinetics with 45% desorption within 2 min and 97% total recovery, representing a substantial acceleration compared to conventional ion-exchange processes. The BrSCE simultaneously delivered 60% TDS reduction, enabling dual-function operation for both selective resource recovery and water purification. These performance characteristics position the composite electrode approach as a viable strategy for valorizing low-concentration bromide sources previously considered uneconomical, advancing circular economy principles in industrial water treatment, and critical resource recovery. • Bromide selective electrode (BrSCE) was developed for Br − removal & recovery • BrSCE achieved good selectivity and efficient dissolved salt reduction • Optimized BrSCE achieved 2.83 Br − selectivity over Cl − & 60% TDS reduction • Desorption yielded 97% total bromide recovery efficiency • Offers practical solutions for bromine production & targeted desalination

Pyrolysis-derived phosphorus-doped porous carbon from chestnut shell waste for supercapacitor and hydrogen generation applications

Synergistic enhancement of storage performance of porous carbon cathodes via boronic acid-mediated hydrothermal-activation coupling and B, N, S triply-doped

Co nanoparticles encapsulated in porous carbon frameworks for electroreduction of nitrate/nitrite to ammonia

High-density aluminum single atoms in porous carbon for efficient oxygen reduction

Porous carbon materials derived from four components of petroleum asphalt for supercapacitors

Reticular-to-reactor carbon platforms: MOF/COF-derived hierarchically porous carbons for selective capture-and-kill water remediation

Unveiling the pore topology in petroleum pitch based porous carbon for low-cost and highly stable Si-C anode materials

Design of FeCoNiSmNd-co-doped porous carbon catalysts from pulverized coal for radical and non-radical peroxymonosulfate activation in organic pollutant degradation

Copper-rich porous carbons from a metal–organic framework for aqueous energy storage electrodes

N/O self-doped hierarchical porous carbon from waste verbena for high-performance all-solid-state supercapacitors

Pomelo peel-derived nitrogen-doped porous carbon: As an efficient cathode material for aqueous and flexible zinc-ion hybrid capacitor

Synergistic molecular assembly and impedance matching in polyimide-derived porous carbon nanosheets for advanced microwave absorption