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Superior supercapacitor performance of Bi2S3 nanorod/reduced graphene oxide composites.
Dalton Trans. 2020 Dec 08; 49(46):16993-17004.DT

Abstract

The present work is focused on the synthesis of bismuth sulfide (Bi2S3) nanorod/reduced graphene oxide (RGO) composites via a one-step hydrothermal method using GO and bismuth nitrate in 5 : 1, 3 : 1 and 2 : 1 weight ratios and their characterization. The morphological studies revealed the formation of homogeneously dispersed Bi2S3 nanorods on RGO sheets along with occasional wrapping in the Bi2S3 nanorod/RGO (3 : 1) composite. XRD, FTIR, Raman and XPS studies suggested the incorporation of Bi2S3 in RGO sheets. The galvanostatic charge-discharge measurements showed that the Bi2S3 nanorod/RGO (3 : 1) composite exhibited the highest specific capacitance (1932 F g-1) at 1 A g-1 in the presence of 2 M aqueous KOH in a three-electrode cell. This is ascribed to the enhanced contact area between metal sulfide nanoparticles and RGO, increased conductivity and synergistic effect of Bi2S3 and RGO. The optimized Bi2S3 nanorod/RGO (3 : 1) composite also maintained an excellent cycling stability with ∼100% capacitance retention after 700 cycles. It is noted that the supercapacitor performance of the Bi2S3 nanorod/RGO (3 : 1) composite was better than group V and VI metal chalcogenides and their nanocomposites reported in several previous studies.

Authors+Show Affiliations

Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India. sunit@chem.iitkgp.ac.in.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33191423

Citation

Ghosh, Kalyan, and Suneel Kumar Srivastava. "Superior Supercapacitor Performance of Bi2S3 Nanorod/reduced Graphene Oxide Composites." Dalton Transactions (Cambridge, England : 2003), vol. 49, no. 46, 2020, pp. 16993-17004.
Ghosh K, Srivastava SK. Superior supercapacitor performance of Bi2S3 nanorod/reduced graphene oxide composites. Dalton Trans. 2020;49(46):16993-17004.
Ghosh, K., & Srivastava, S. K. (2020). Superior supercapacitor performance of Bi2S3 nanorod/reduced graphene oxide composites. Dalton Transactions (Cambridge, England : 2003), 49(46), 16993-17004. https://doi.org/10.1039/d0dt03594g
Ghosh K, Srivastava SK. Superior Supercapacitor Performance of Bi2S3 Nanorod/reduced Graphene Oxide Composites. Dalton Trans. 2020 Dec 8;49(46):16993-17004. PubMed PMID: 33191423.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Superior supercapacitor performance of Bi2S3 nanorod/reduced graphene oxide composites. AU - Ghosh,Kalyan, AU - Srivastava,Suneel Kumar, PY - 2020/11/17/pubmed PY - 2020/11/17/medline PY - 2020/11/16/entrez SP - 16993 EP - 17004 JF - Dalton transactions (Cambridge, England : 2003) JO - Dalton Trans VL - 49 IS - 46 N2 - The present work is focused on the synthesis of bismuth sulfide (Bi2S3) nanorod/reduced graphene oxide (RGO) composites via a one-step hydrothermal method using GO and bismuth nitrate in 5 : 1, 3 : 1 and 2 : 1 weight ratios and their characterization. The morphological studies revealed the formation of homogeneously dispersed Bi2S3 nanorods on RGO sheets along with occasional wrapping in the Bi2S3 nanorod/RGO (3 : 1) composite. XRD, FTIR, Raman and XPS studies suggested the incorporation of Bi2S3 in RGO sheets. The galvanostatic charge-discharge measurements showed that the Bi2S3 nanorod/RGO (3 : 1) composite exhibited the highest specific capacitance (1932 F g-1) at 1 A g-1 in the presence of 2 M aqueous KOH in a three-electrode cell. This is ascribed to the enhanced contact area between metal sulfide nanoparticles and RGO, increased conductivity and synergistic effect of Bi2S3 and RGO. The optimized Bi2S3 nanorod/RGO (3 : 1) composite also maintained an excellent cycling stability with ∼100% capacitance retention after 700 cycles. It is noted that the supercapacitor performance of the Bi2S3 nanorod/RGO (3 : 1) composite was better than group V and VI metal chalcogenides and their nanocomposites reported in several previous studies. SN - 1477-9234 UR - https://www.unboundmedicine.com/medline/citation/33191423/Superior_supercapacitor_performance_of_Bi2S3_nanorod/reduced_graphene_oxide_composites_ L2 - https://doi.org/10.1039/d0dt03594g DB - PRIME DP - Unbound Medicine ER -
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