Enhancing areal capacitance of high-rate zinc-ion hybrid capacitors by constructing self-supporting lignin-based N-doped carbon foams

Key Points

• Areal capacitance is significantly enhanced through the use of self-supporting lignin-based N-doped carbon foams.
• The study reports a notable improvement in capacitance metrics, contributing to energy storage efficiency.
• This experimental workflow explores the properties of lignin-based materials in electrochemical applications.
• The findings suggest advancements in hybrid capacitor technology may rely on innovative carbon foam designs.