Journal
RSC ADVANCES
Volume 9, Issue 51, Pages 29549-29555Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra05055h
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Funding
- DST, New Delhi [IFA-13/PH-84]
- SERB, New Delhi [ECR/2016/1780, ECR/2016/1888]
- UGC-DAE CSR, Indore [CSR-IC-MSRSR-23/CRS-231/2017-18/1312, CSR-IC/CRS-73/2014-15/581]
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Herein, we introduce the detailed electrochemical reaction mechanism of Bi2S3 (bulk as well as nanostructure) as a highly efficient anode material with Li-ions in an all-solid-state Li-ion battery (LIB). Flower-like Bi2S3 nanostructures were synthesized by a hydrothermal method and were used as an anode material in a LIB with LiBH4 as a solid electrolyte. The X-ray diffraction (XRD) pattern verified the formation of Bi2S3 nanostructures, which belongs to the orthorhombic crystal system (JCPDS no. 00-006-0333) with the Pbnm space group. Morphological studies confirmed the flower-like structure of the obtained product assembled from nanorods with the length and diameter in the range of 150-400 nm and 10-150 nm respectively. The electrochemical galvanostatic charge-discharge profile of these nanostructures demonstrates exciting results with a high discharge and charge capacity of 685 mA h g(-1) & 494 mA h g(-1) respectively at 125 degrees C. The discharge and charge capacities were observed as 375 mA h g(-1) and 352 mA h g(-1) after 50 cycles (with 94% coulombic efficiency), which are much better than the cells having bulk Bi2S3 as the anode material.
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