CO2 electrochemical reduction offers a potential technique to decrease the CO2 emission levels, but it has been hindered by the poor performance of electrocatalysts. In this work, the electrochemical reduction of CO2 has been studied by using a needle‐like porous indium electrode, which was electrodeposited in aqueous electrolytes containing Cl− using the hydrogen bubble dynamic template. This novel electrode displayed improved electrocatalytic activity, enhanced conversion efficiencies, and a lower onset potential −0.76 V vs. RHE), which was 0.3 V less than the indium foil electrode. Moreover, it exhibited enhanced faradaic efficiencies of 86 % for formate at −0.86 V vs. RHE and with a current density of 5.8 mA cm−2. This excellent catalytic activity is the result of a large electrochemical surface area and needle‐like dendrite structures in the presence of Cl− salts. Utilization of the novel nanostructured electrocatalysts and understanding of the role of salts can contribute to further improvements in CO2 reduction.

Electrodeposition of silver from a KAg͑CN) 2 -KCN electrolyte was investigated. The addition of potassium selenocyanate ͑KSeCN͒ results in a hysteretic current-voltage response, specular films, and superconformal growth in submicrometer vias. These observations are well described by the recently proposed curvature enhanced accelerator coverage model of film growth.

Hexasubstituted [3]radialenes can be synthetically tuned to function as catholyte materials for neutral pH aqueous organic redox flow batteries.

The superlattice structures of hierarchical cluster solids are dictated by short-range interactions between constituent building blocks. Here we show that shape complementary sites, as well as halogen and chalcogen bonding between exposed capping ligands and fullerides, govern the packing arrangement of the resulting binary solids. Four new superatomic solids, [Ni(μ-I)(μ-dppm)](C) (1·C), [Ni(μ-I)(μ-dppm)](C) (1·C), [Ni(μ-Te)(μ-dppm)](C) (2·C), and [Ni(μ-Te)(μdppm)](C) (2·C), (dppm = PhPCHPPh) were prepared and crystallized from solution. All four compounds were characterized by single crystal X-ray diffraction, IR spectroscopy, and SQUID magnetometry. Charge transfer between the molecular clusters is confirmed via optical spectroscopy and structural data. Compounds 1·C and 2·C are paramagnetic and 100 times more conductive than the constituent cluster precursors. The obtained solids exhibit close contacts, indicative of halogen/chalcogen bonds, between the fulleride anions and the nickel cluster capping ligands (I/Te) in the solid-state.