N-, P- and B-doped mesoporous carbons were used as metal-free catalysts in propane dehydrogenation, and their catalytic performances were influenced critically by the chemical structures and oxygen-containing groups in these carbons.

No abstract

Sodium-ion batteries (SIBs) based on flexible electrode materials are being investigated recently for improving sluggish kinetics and developing energy density. Transition metal selenides present excellent conductivity and high capacity; nevertheless, their low conductivity and serious volume expansion raise challenging issues of inferior lifespan and capacity fading. Herein, an in-situ construction method through carbonization and selenide synergistic effect is skillfully designed to synthesize a flexible electrode of bone-like CoSe 2 nano-thorn coated on porous carbon cloth. The designed flexible CoSe 2 electrode with stable structural feature displays enhanced Na-ion storage capabilities with good rate performance and outstanding cycling stability. As expected, the designed SIBs with flexible BLÀ CoSe 2 /PCC electrode display excellent reversible capacity with 360.7 mAh g À 1 after 180 cycles at a current density of 0.1 A g À 1 .[a] Dr.

Organic electrodes hold great promise for sustainable electrodes in sodium‐ion batteries (SIBs) owing to their easy availability from biomass. However, traditional organic electrodes suffer from two inherent problems, high solubility in organic electrolytes and low electronic conductivity. Here, a calcium organic salt, Cabpdc (bpdc=4,4′‐biphenyldicarboxylate) was designed and formed into a composite with reduced graphene oxide (rGO) to improve these two problems by a “two‐in‐one” approach. As expected, the Cabpdc/rGO composite displayed competitive cycle and rate performances as an anode for SIBs. Additionally, all‐organic sodium‐ion full cells were successfully fabricated combining this anode with a commercial organic cathode, promising applications for sustainable SIBs.

The synergistic effect of Co3O4 and Ti3C2Tx and the lithiation-induced refining architecture of Co3O4/Ti3C2Tx contribute to remarkable performance.