Efficient construction of hard carbon through hydrothermal carbon coating engineering toward enhanced sodium-ion storage performance

Key Points

• The research aims to improve sodium-ion storage performance by optimizing hard carbon structure through coating techniques.
• Developed a hydrothermal carbon coating process.
• Analyzed pyrolysis behavior during carbon coating.
• Compared performance of coated vs. uncoated hard carbon anodes.
• Coated hard carbon showed enhanced sodium-ion storage capacity.
• Closed-pore architectures resulted in better structural stability.
• Improved coating efficiency linked to performance gains.