Provided is a sulfur-containing material including a sulfur-modified compound, wherein the sulfur-containing material has a total content of sulfur of 50 mass % or more, and a ratio (A/B) of a maximum peak intensity (A) at a diffraction angle (2θ) that fa...

A modified electrode includes a conductive substrate and a crosslinked branched polymer disposed on at least a portion of a surface of the conductive substrate. The crosslinked branched polymer comprises a plurality of tertiary amino groups and a plurality...