Micropore confinement for a highly rechargeable aqueous Zn-hydroquinone battery with exceptional capacity.

A highly rechargeable battery utilizing a zinc anode, aqueous ZnSO electrolyte, and hydroquinone (QH2) cathode is reported. QH2 immobilized within the pores of microporous carbon delivered a high specific capacity (482 mA h g at 0.5C), approaching the theoretical specific capacity of QH2 (486.

A Ni-loaded, metal-organic framework-graphene composite as a precursor for in situ electrochemical deposition of a highly active and durable water oxidation nanocatalyst.

A novel approach to construct a highly active and durable Ni(OH)2 nanoparticle/graphene hybrid electrocatalyst for the oxygen-evolution reaction (OER) is reported. This approach utilized the Ni-loaded, graphene-supported, Zr-carboxylate metal-organic framework (UiO-66-NH2-Ni@G) as a sacrificial pre-catalyst to engender the true catalyst in an electrochemical surface restructuring process. This has resulted in an exceptionally active (η10 = 0.

The potential of a graphene-supported porous-organic polymer (POP) for CO electrocatalytic reduction.

A one-pot, bottom-up assembly of a pyrimidine-containing porous-organic polymer (PyPOP) was conducted to homogenously deposit the PyPOP atop unmodified graphene sheets, affording a composite material PyPOP@G. The PyPOP demonstrated an appreciable affinity toward CO capture but was found to be largely insulating, hindering its usage in potential electrochemical conversion of CO. However, its composite with graphene was found to be microporous, with maintained affinity toward CO and furthermore demonstrated significant electrochemical activity toward CO reduction (5 mA cm at -1.

Surface functionality and electrochemical investigations of a graphitic electrode as a candidate for alkaline energy conversion and storage devices.

Graphite is a typical electrocatalyst support in alkaline energy conversion and storage devices such as fuel cells, supercapacitores and lithium ion batteries. The electrochemical behaviour of a graphite electrode in 0.5 M NaOH was studied to elucidate its surface structure/electrochemical activity relationship.