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Updated: Jan 25, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Biomass-Derived Hard Carbon with Optimized Pseudo-graphitic Domains and Closed Pores for High-Performance Sodium
Jia Song1,2, Zhenzhu Wang2,3, Jinshu Zhang4
1National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, China.
Abstract:
Hard carbon (HC) stands out as a competitive anode for sodium-ion batteries, combining abundant, sustainable precursors with desirable electrochemical properties. By employing a simple solution-based approach to control cellulose decomposition, we engineer curved pseudographitic domains with expanded interlayer spacing and rich closed pores from peanut shell precursors. The resulting PSHC-7 delivers 401 mAh g-1 at 0.06 A g-1, an initial Coulombic efficiency of 88.6%, 289 mAh g-1 at 3.0 A g-1, and 93.1% capacity retention over 4500 cycles. In situ Raman and in situ XRD reveal a multistep "adsorption-intercalation-pore filling" mechanism, while theoretical calculations confirm that hierarchical pores and pseudocapacitive effects enhance Na+ transport and storage. The full cells (NVP//PSHC-7) demonstrate practical applicability. This work provides an integrated experimental and theoretical framework linking precursor chemistry, microstructure, and electrochemical performance, offering a facile route to high-efficiency, durable, and cost-effective SIB anodes.
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