N, S Co-Doped Carbon Derived From Lignosulfonate Sodium Synergized With Bismuth for Enhanced Sodium-Ion Storage.

Authors

Ge Lin, Liang Liu, Yiting Dai, Jiacheng Shen, Hong Cui, Ziyao Zhang, Jiantie Xu

Published in

Small (Weinheim an der Bergstrasse, Germany). Pages e74506. Jul 13, 2026. Epub Jul 13, 2026.

Abstract

Developing high-performance anode materials is crucial for advanced sodium-ion batteries. Bismuth (Bi)-based anodes offer high capacity but suffer from significant volume expansion. To address this, we synthesized Bi particles embedded within an N, S co-doped porous carbon matrix (Bi@NSC-x) using biomass-derived sodium lignosulfonate. The optimal Bi@NSC-600 electrode demonstrates exceptional performance with a high reversible capacity of 324.3 mAh g^-1 at 0.1 A g^-1, outstanding rate capability (313.1 mAh g^-1 at 20 A g^-1, 268.8 mAh g^-1 at 50 A g^-1), and remarkable long-term stability (retaining 300.3 mAh g^-1 after 4800 cycles at 1 A g^-1 and 296.9 mAh g^-1 after 5600 cycles at 5 A g^-1). Moreover, a full cell with a Na₃V₂(PO₄)₃ cathode delivers 107.9 mAh g^-1 at 0.5 C and maintains 84.4 mAh g^-1 after 2300 cycles at 10 C. The superior performance stems from the synergistic effect in which the heteroatom-doped carbon framework enhances conductivity and Na⁺ adsorption, while its porous structure confines Bi particles, buffering volume changes and facilitating efficient ion/electron transport.

PMID:
42439055
Bibliographic data and abstract were imported from PubMed on 13 Jul 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.