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Volume 11
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10.3390/batteries11120462
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

In Situ Growth of Cross-Linked Ti2Nb10O29 Nanoparticles on Inner/Outer Surfaces of Carbon Microtubes for High-Efficiency Lithium Storage

by
Zhi Nie
1,2,
Hualin Xiong
1,2,
Changlong Du
1,2,
Lei Yu
1,2,*,
Lianrui Li
1,2,
Gengping Wan
1,2,* and
Guizhen Wang
1,2,*
1
State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation, Center for Advanced Studies in Precision Instruments, School of Material Science and Engineering, Hainan University, Haikou 570228, China
2
Center for New Pharmaceutical Development and Testing of Haikou, Hainan University, Haikou 570228, China
*
Authors to whom correspondence should be addressed.
Batteries 2025, 11(12), 462; https://doi.org/10.3390/batteries11120462
Submission received: 13 November 2025 / Revised: 11 December 2025 / Accepted: 12 December 2025 / Published: 16 December 2025
Versions Notes

Abstract

Improving electronic and ionic transport and the structural stability of electrode materials is essential for the development of advanced lithium-ion batteries. Despite its great potential as a high-power anode, Ti2Nb10O29 (TNO) still underperforms due to its unsatisfactory electronic and ionic conductivity. Here, a TNO/carbon microtube (TNO@CMT) composite is constructed via an ethanol-assisted solvothermal process and controlled annealing. The hollow carbon framework derived from kapok fibers provides a lightweight conductive skeleton and abundant nucleation sites for uniform TNO growth. By tuning precursor concentration, the interfacial structure and loading are precisely regulated, optimizing electron/ion transport. The optimized TNO@CMT-2 exhibits uniformly dispersed TNO nanoparticles anchored on both inner and outer CMT surfaces, enabling rapid electron transfer, short Li+ diffusion paths, and high structural stability. Consequently, it delivers a reversible capacity of 314.9 mAh g−1 at 0.5 C, retains 75.8% capacity after 1000 cycles at 10 C, and maintains 147.96 mAh g−1 at 40 C. Furthermore, the Li+ diffusion coefficient of TNO/CMT-2 is 5.4 × 10−11 cm2 s−1, which is nearly four times higher than that of pure TNO. This work presents a promising approach to designing multi-cation oxide/carbon heterostructures that synergistically enhance charge and ion transport, offering valuable insights for next-generation high-rate lithium-ion batteries.
Keywords: Ti2Nb10O29; carbonized kapok microtubules; anode; lithium-ion battery Ti2Nb10O29; carbonized kapok microtubules; anode; lithium-ion battery

Share and Cite

MDPI and ACS Style

Nie, Z.; Xiong, H.; Du, C.; Yu, L.; Li, L.; Wan, G.; Wang, G. In Situ Growth of Cross-Linked Ti2Nb10O29 Nanoparticles on Inner/Outer Surfaces of Carbon Microtubes for High-Efficiency Lithium Storage. Batteries 2025, 11, 462. https://doi.org/10.3390/batteries11120462

AMA Style

Nie Z, Xiong H, Du C, Yu L, Li L, Wan G, Wang G. In Situ Growth of Cross-Linked Ti2Nb10O29 Nanoparticles on Inner/Outer Surfaces of Carbon Microtubes for High-Efficiency Lithium Storage. Batteries. 2025; 11(12):462. https://doi.org/10.3390/batteries11120462

Chicago/Turabian Style

Nie, Zhi, Hualin Xiong, Changlong Du, Lei Yu, Lianrui Li, Gengping Wan, and Guizhen Wang. 2025. "In Situ Growth of Cross-Linked Ti2Nb10O29 Nanoparticles on Inner/Outer Surfaces of Carbon Microtubes for High-Efficiency Lithium Storage" Batteries 11, no. 12: 462. https://doi.org/10.3390/batteries11120462

APA Style

Nie, Z., Xiong, H., Du, C., Yu, L., Li, L., Wan, G., & Wang, G. (2025). In Situ Growth of Cross-Linked Ti2Nb10O29 Nanoparticles on Inner/Outer Surfaces of Carbon Microtubes for High-Efficiency Lithium Storage. Batteries, 11(12), 462. https://doi.org/10.3390/batteries11120462

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