Reduced graphene oxide/cobalt phosphate composites with improved electrochemical performance for supercapattery devices
2022; Wiley; Volume: 46; Issue: 15 Linguagem: Inglês
10.1002/er.8636
ISSN1099-114X
AutoresMuhammad Zahir Iqbal, Faiz Alam, Junaid Khan, Shahid Alam, Najam Alhassan, Meshal Alzaid,
Tópico(s)Advanced Battery Materials and Technologies
ResumoInternational Journal of Energy ResearchVolume 46, Issue 15 p. 23377-23387 RESEARCH ARTICLE Reduced graphene oxide/cobalt phosphate composites with improved electrochemical performance for supercapattery devices Muhammad Zahir Iqbal, Corresponding Author Muhammad Zahir Iqbal zahir.upc@gmail.com orcid.org/0000-0003-4985-0981 Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi, Khyber Pakhtunkhwa, Pakistan Correspondence Muhammad Zahir Iqbal, Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhwa, Pakistan. Email: zahir.upc@gmail.com Najam Alhassan, Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, 21120, Pakistan. Email: najamalhassan@yahoo.comSearch for more papers by this authorFaiz Alam, Faiz Alam Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan Department of Physics, Government Postgraduate Collage No. 1, Abbottabad, Khyber Pakhtunkhwa, PakistanSearch for more papers by this authorJunaid Khan, Junaid Khan Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi, Khyber Pakhtunkhwa, Pakistan Department of Physics, Government Postgraduate Collage No. 1, Abbottabad, Khyber Pakhtunkhwa, PakistanSearch for more papers by this authorShahid Alam, Shahid Alam Department of Physics, Abbottabad University of Science and Technology, Havelian, Khyber Pakhtunkhwa, PakistanSearch for more papers by this authorNajam Alhassan, Corresponding Author Najam Alhassan najamalhassan@yahoo.com Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan Correspondence Muhammad Zahir Iqbal, Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhwa, Pakistan. Email: zahir.upc@gmail.com Najam Alhassan, Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, 21120, Pakistan. Email: najamalhassan@yahoo.comSearch for more papers by this authorMeshal Alzaid, Meshal Alzaid Physics Department, College of Science, Jouf University, Al-Jouf, Sakaka, Saudi ArabiaSearch for more papers by this author Muhammad Zahir Iqbal, Corresponding Author Muhammad Zahir Iqbal zahir.upc@gmail.com orcid.org/0000-0003-4985-0981 Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi, Khyber Pakhtunkhwa, Pakistan Correspondence Muhammad Zahir Iqbal, Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhwa, Pakistan. Email: zahir.upc@gmail.com Najam Alhassan, Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, 21120, Pakistan. Email: najamalhassan@yahoo.comSearch for more papers by this authorFaiz Alam, Faiz Alam Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan Department of Physics, Government Postgraduate Collage No. 1, Abbottabad, Khyber Pakhtunkhwa, PakistanSearch for more papers by this authorJunaid Khan, Junaid Khan Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi, Khyber Pakhtunkhwa, Pakistan Department of Physics, Government Postgraduate Collage No. 1, Abbottabad, Khyber Pakhtunkhwa, PakistanSearch for more papers by this authorShahid Alam, Shahid Alam Department of Physics, Abbottabad University of Science and Technology, Havelian, Khyber Pakhtunkhwa, PakistanSearch for more papers by this authorNajam Alhassan, Corresponding Author Najam Alhassan najamalhassan@yahoo.com Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan Correspondence Muhammad Zahir Iqbal, Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhwa, Pakistan. Email: zahir.upc@gmail.com Najam Alhassan, Department of Physics, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, 21120, Pakistan. Email: najamalhassan@yahoo.comSearch for more papers by this authorMeshal Alzaid, Meshal Alzaid Physics Department, College of Science, Jouf University, Al-Jouf, Sakaka, Saudi ArabiaSearch for more papers by this author First published: 04 September 2022 https://doi.org/10.1002/er.8636Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Summary Among various energy storage devices, supercapatteries are notable for delivering significant electrochemical performance in terms of high specific power and specific energy. Herein, a sonochemical approach was utilized to synthesize the cobalt phosphate (Co3(PO4)2) for utilization as an electrode material for supercapattery device. To tune the electrochemical performance via enhancement of ionic conduction, composites of Co3(PO4)2 along with reduced graphene oxide (rGO) powder at different wt% were made. The optimum electrochemical performance was delivered by the composite containing 85% Co3(PO4)2 and 15% rGO profits a maximum Qs of 619.2 C/g at 3 mV/s, and 415.6 C/g (specific capacitance of 593.2 F/g) at 2.0 A/g. In a supercapattery device, the prime electrochemical performer was utilized as the positive and activated carbon as a negative electrode. Our supercapattery device delivered remarkable specific energy of 68.06 Wh/kg and carries a tremendous maximum specific power of 7650 W/kg along with 98.03% of capacity retention observed after the 2000 continuous GCD cycles. The device shows a capacitive contribution of 13.61%, 24.25%, and 39.69% at 10, 50, and 100 mV/s correspondingly calculated through simulation approach. The research demonstrates an aim to tune the electrochemical capability of Co3(PO4)2 for potential electrochemical devices. Highlights Cobalt phosphate is synthesized by sonochemical approach. Composition of cobalt phosphate and reduced graphene oxide was optimized. High specific capacity of 415.6 C/g was obtained via composition containing 85% Co3 (PO4)2 and 15% rGO. Supercapattery formed by coupling this composite with activated carbon. High power density of 7650 W/kg and high energy density of 68.06 Wh/kg. Specific capacity retention of 98.03% after continuous 2000 GCD cycles. CONFLICT OF INTEREST The authors declare no conflicts of interest. Open Research DATA AVAILABILITY STATEMENT Data can be shared on request. Supporting Information Filename Description er8636-sup-0001-Figures.docxWord 2007 document , 1.7 MB Fig. S1 Comparison of CV curves of bare nickel foam and coated composite electrode material at scan rate of 3 mV/s Fig. S2. Raman spectroscopy of reduce graphene oxide Fig. S3. Cyclic voltammetry (a) S1 (Co3(PO4)2); (b) S2 (85/15 wt% of Co3(PO4)2/rGO); (c) S3 (70/30 wt% of Co3(PO4)2/rGO); (d) S4 (50/50 wt% Co3(PO4)2/rGO) Fig. S4. GCD profiles at varying Js values: (a) S1 (Co3(PO4)2); (b) S2 (85/15 wt% of Co3(PO4)2/rGO); (c) S3 (70/30 wt% of Co3(PO4)2/rGO); (d) S4 (50/50 wt% Co3(PO4)2/rGO) Fig. S5. (a, b) Qs and Cs of all the four samples at corresponding Js accordingly Fig. S6. EIS outcomes of all samples, the inset shows zoomed part of high-frequency expanse Fig. S7. (S3//AC) b-value, through linear fitting of the log of scan rate against log of current Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume46, Issue15December 2022Pages 23377-23387 RelatedInformation
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