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A Ternary Fibrous TiO2-Ni3S4-Carbon Composite Derived from Cellulose Substance for Effective Lithium Storage
Yuanyi Guo1, Yujie Jin1, Weixiang Chen1
1Department of Chemistry, Zhejiang University, Zhejiang, Hangzhou310058, China.
ACS Applied Materials & Interfaces
|August 13, 2026
Summary
A new TiO2-Ni3S4-carbon composite enhances lithium-ion battery anodes. This material offers improved conductivity and stability, boosting battery performance and longevity for practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Nickel sulfide (Ni3S4) materials show promise for lithium-ion batteries (LIBs) due to high capacity.
- Key limitations include poor conductivity, volume expansion, and polysulfide shuttle effects.
Purpose of the Study:
- To develop a ternary composite anode material for LIBs that overcomes the limitations of Ni3S4.
- To enhance electrochemical performance and long-term stability.
Main Methods:
- Synthesis of a TiO2-Ni3S4-carbon composite using cellulose as a scaffold via hydrothermal and sol-gel methods.
- Characterization of the nanoarchitecture with uniformly distributed Ni3S4 nanoparticles, carbon fibers, and TiO2 nanoplates.
Main Results:
- The composite exhibits a stable nanoarchitecture with synergistic effects from TiO2, Ni3S4, and carbon.
- The TiO2 coating protects against polysulfide shuttle and stabilizes the solid electrolyte interface (SEI).
- The anode delivered 600.2 mAh g-1 at 1.0 A g-1 after 3000 cycles with 70.3% retention.
Conclusions:
- The TiO2-Ni3S4-carbon composite demonstrates excellent electrochemical performance as an anode for LIBs.
- The material's structure effectively buffers volume expansion and enhances cycling stability.
- The developed anode shows significant potential for practical LIB applications.
