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Tharamani C. Nagaiah
Indian Institute of Technology Ropar
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Despite a promising outlook, the large-scale application of aqueous rechargeable sodium-ion batteries (ARSIBs) was impeded due to low-capacity electrode materials. Herein we report a high capacity elemental sulfur-based anode ([email protected]/Pi-NCS) for aqueous rechargeable sodium ion-sulfur batteries using 70 % of elemental sulfur which deliver an outstanding capacity of 826 mA h/g at 0.5 C with an excellent cycling stability even at 10 C and a negligible capacity decay with 0.03 % sulfur loss per cycle even after 400 cycles. In-situ spectro-electrochemical analysis confirms good anchoring ability of the anode and a faster redox kinetics of polysulfide conversion. The chemical interaction with vanadium provides faster redox kinetics of polysulfide conversion and efficient anchoring as revealed by XPS and was further supported by XANES and EXAFS studies wherein the distortion at the V site and overlapping electronic states in NiVP/Pi catalyst was observed. Further, full cell battery using [email protected]/Pi-NCS anode and Na0.44MnO2 cathode demonstrates an excellent initial capacity of 705 mA h/g based on S loading and 91.7 mAh/g w.r.t. total electrode weight at 0.5 C with 91 % of capacity retention after 400 cycles and two full cells connected in series able to power LED demonstrate its practical application.
Keywords
aqueous sodium-ion batteries (ARSIBs), elemental sulfur, Energy storage
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- 03supportinginformationaqs.NaSbatteryNiVPPPY.pdf
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Article
Tharamani C. Nagaiah
Indian Institute of Technology Ropar
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
The most recent version of this article is available here.
No community comments so far
Version 1
Posted 16 Apr, 2021
No comments provided
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Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
The most recent version of this article is available here.
Despite a promising outlook, the large-scale application of aqueous rechargeable sodium-ion batteries (ARSIBs) was impeded due to low-capacity electrode materials. Herein we report a high capacity elemental sulfur-based anode ([email protected]/Pi-NCS) for aqueous rechargeable sodium ion-sulfur batteries using 70 % of elemental sulfur which deliver an outstanding capacity of 826 mA h/g at 0.5 C with an excellent cycling stability even at 10 C and a negligible capacity decay with 0.03 % sulfur loss per cycle even after 400 cycles. In-situ spectro-electrochemical analysis confirms good anchoring ability of the anode and a faster redox kinetics of polysulfide conversion. The chemical interaction with vanadium provides faster redox kinetics of polysulfide conversion and efficient anchoring as revealed by XPS and was further supported by XANES and EXAFS studies wherein the distortion at the V site and overlapping electronic states in NiVP/Pi catalyst was observed. Further, full cell battery using [email protected]/Pi-NCS anode and Na0.44MnO2 cathode demonstrates an excellent initial capacity of 705 mA h/g based on S loading and 91.7 mAh/g w.r.t. total electrode weight at 0.5 C with 91 % of capacity retention after 400 cycles and two full cells connected in series able to power LED demonstrate its practical application.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
The full text of this article is available to read as a PDF.
There is NO Competing Interest.
This is a list of supplementary files associated with this preprint. Click to download.
- 03supportinginformationaqs.NaSbatteryNiVPPPY.pdf
Supporting Information
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