Structural, magnetic and electrochemical characteristics of Ni/C composites fabricated from modified hydrolytic lignin

https://doi.org/10.1016/j.matlet.2023.135120

The synthesis of metal–carbon materials based on hydrolytic lignin by its modification with subsequent carbonation is studied. It is shown the modification of hydrolysis lignin with ZnCl₂ and NiCl₂ leads to a significant increase of specific surface area up to 716 m²/g and the apparent specific capacity up to 350F/g of carbonized composite. It was found out that fabricated Ni/C composites are characterized by a coercive force of 80–105 Oe, a saturation magnetization of 4–11 Gs∙cm³/g, and a residual magnetization of 0.28–0.45 Gs∙cm³/g. This indicates the prospects of their use as a magnetically soft material.