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Abstract: We report an inverse relationship between measurable porosity values and reversible capacity from sucrose-derived hard carbon as an anode for sodium-ion batteries (SIBs). Materials with low measureable pore volumes and surface areas obtained through N2 sorption yield higher reversible capacities. Conversely, increasing measurable porosity and specific surface area leads to sharp decreases in reversible capacity. Utilizing a low porosity material, we thus are able to obtain a reversible capacity of 335mAhg− 1. These findings suggest that sodium-ion storage is highly dependent on the absence of pores detectable through N2 sorption in sucrose-derived carbon. [Copyright &y& Elsevier]

Reactions of four different tetrazole-containing carboxylic acids and 4,4'bipyridine with ZnCl2⋅6H2O, produced four new coordination compounds, [Zn(pytza)2(4,4'-bipy)(H2O)2]⋅2H2O (1), (pytza = 5-(3-pyridyl)tetrazole-2-acetato), [Zn(tzpya)2(4,4'-bipy)(H2O)2]⋅8H2O (2) (tzpya = 4-(5-tetrazolyl)pyridine-1-acetato), [Zn(4,4'-bipy)(H2O)4]⋅2(pztza)⋅2H2O (3) (pztza = 5-(2-pyrazinyl)tetrazole-2-acetato). [Zn(atza)2(4,4'-bipy)0.5⋅H2O] (4) (atza = 5-aminotetrazole-1-acetato). These compounds were structurally characterized by elemental analysis, IR spectroscopy, UV-Vis spectroscopy, thermogravimetric analysis and single crystal X-ray diffraction. The X-ray diffraction reveals that compounds 1-3 display 1D polymeric chains while 4 shows a 2D layer structure. Compounds 1-4 are self-assembled to form 3D networks by hydrogen bonding interactions. Furthermore, the luminescent properties were also investigated at room temperature in the solid state. [ABSTRACT FROM AUTHOR]