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Flower-like Bi2S3 nanostructures as highly efficient anodes for all-solid-state lithium-ion batteries
Pooja Kumari1,2, Kamlendra Awasthi2, Shivani Agarwal3
1Graduate School of Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan.
RSC Advances
|May 9, 2022
Summary
Flower-like bismuth sulfide nanostructures show high performance as anode materials in all-solid-state lithium-ion batteries. These nanostructures offer superior electrochemical properties compared to bulk bismuth sulfide.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- All-solid-state lithium-ion batteries (LIBs) are crucial for next-generation energy storage.
- Bismuth sulfide (Bi2S3) is explored as a potential anode material due to its electrochemical properties.
- Optimizing nanostructure morphology can enhance battery performance.
Purpose of the Study:
- To investigate the electrochemical reaction mechanism of Bi2S3 (bulk and nanostructure) as an anode in all-solid-state LIBs.
- To synthesize and characterize flower-like Bi2S3 nanostructures for enhanced LIB performance.
- To evaluate the performance of Bi2S3 nanostructures as an anode material with a solid electrolyte.
Main Methods:
- Hydrothermal synthesis was employed to create flower-like Bi2S3 nanostructures.
- X-ray diffraction (XRD) was used for structural and phase identification.
- Morphological studies characterized the nanostructure's architecture.
- Electrochemical galvanostatic charge-discharge cycling evaluated battery performance at 125 °C.
Main Results:
- Flower-like Bi2S3 nanostructures were successfully synthesized, exhibiting an orthorhombic crystal structure.
- The nanostructures displayed high initial discharge and charge capacities of 685 and 494 mA h g⁻¹, respectively.
- After 50 cycles, capacities of 375 mA h g⁻¹ (discharge) and 352 mA h g⁻¹ (charge) with 94% coulombic efficiency were achieved.
- Performance of nanostructured Bi2S3 significantly outperformed bulk Bi2S3.
Conclusions:
- Flower-like Bi2S3 nanostructures are highly efficient anode materials for all-solid-state LIBs.
- The nanostructured morphology contributes to improved electrochemical performance and cycling stability.
- Bi2S3, particularly in nanostructured form, shows great promise for advanced solid-state batteries.
