Enhanced cyclability using a polyindole modified cathode material for lithium sulphur batteries

Chulliyote, Reshma; Hareendrakrishnakumar, Haritha; Raja, Muhammad Asif Zahoor; Gladis, J. Mary; Stephan, A. Manuel

doi:10.1039/c7se00210f

Cited by 22 publications

(17 citation statements)

References 52 publications

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“…After impregnation of sulfur onto PC, S−S bond is slightly shifted to 163.6‐164.8 compared to sulfur powder may be due to the changes in the electronic distribution on the sulfur after melt diffusion which indicates the possibility of C−S bond ,,,,. Further, sulfur is bonded to both nitrogen and oxygen [S−N (163.8‐165) and S−O (164.1‐165.3)] in the carbon matrix ,. It is expected that the interaction of sulfur with carbon matrix through S−O and S−N bonds effectively confine polysulfides during charge discharge process .…”

Section: Resultsmentioning

confidence: 99%

“…Attempts have been made by various researchers to improve the conductivity of sulfur by incorporating or wrapping additives such as carbon nanotube, graphene, graphene oxide, carbon nanofiber, polyindole, polyaniline, polypyrrole, polythiophene, and porous carbons . These reports demonstrated improvements in cycling stability and active material utilization.…”

Section: Introductionmentioning

confidence: 99%

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Sulfur‐Immobilized Nitrogen and Oxygen Co–Doped Hierarchically Porous Biomass Carbon for Lithium‐Sulfur Batteries: Influence of Sulfur Content and Distribution on Its Performance

Chulliyote

Hareendrakrishnakumar

Raja

et al. 2017

ChemistrySelect

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Hierarchically porous carbon with inherently doped heteroatoms and the quantity of active material (sulfur) confined within this carbon matrix play a major role for the high performance of Li−S batteries. Herein, we discuss the influence of sulfur content and distribution onto the N and O co‐doped hierarchically porous biomass carbon matrix (PC) to achieve high specific capacitance and cycling stability. Sulfur encapsulated PC was prepared from an eco‐friendly source with a high surface area of 2065 m2 g−1 and a pore volume of 1.5 cm3 g−1. PC with 54, 68 & 73% of sulfur content (PCSCs) have been investigated as cathode materials for Li−S battery. PC with 54% sulfur displayed better performance with an initial discharge capacity of 1606 mA h g−1 and a cycling stability of 1269 mA h g−1 at 0.1C rate after 100 cycles due to better dispersion of sulfur in the porous architecture. The higher cycling stability of PCSC (54%) is due to the N and O co‐doped hierarchical porous carbon layers, enhancing the sulfur utilization ratio and mitigating the polysulfide shuttle during the cycling process.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sulfur‐Immobilized Nitrogen and Oxygen Co–Doped Hierarchically Porous Biomass Carbon for Lithium‐Sulfur Batteries: Influence of Sulfur Content and Distribution on Its Performance

Chulliyote

Hareendrakrishnakumar

Raja

et al. 2017

ChemistrySelect

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“…The interaction between the sulfur and heteroatoms amends the electronic dissemination around the atoms and instigates the binding energy changes before and after melt diffusion. It is clearly evidenced from XPS spectra of HC and HCS. , …”

Section: Resultsmentioning

confidence: 86%

“…It has 1.2 eV parting of energy between the bands. It is deconvoluted into three peaks, C–S bond (163.7–164.9), S–N (164–165.2), and S–O (164.3–165.5). ,,− The existence of C–N and C–O bonds help the interatomic interaction between the heteroatoms and PSs, further restrict the movement toward the anode surface. The presence of silicon bonds help to restrain the PSs through Si–S bonds or S–O bonds from silicon oxide .…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Porous Carbon Material with Multifunctionalities Derived from Honeycomb as a Sulfur Host and Laminate on the Cathode for High-Performance Lithium–Sulfur Batteries

Chulliyote

Hareendrakrishnakumar

Joseph

2019

ACS Sustainable Chem. Eng.

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Lithium−sulfur batteries (LSBs) received worldwide attention because of its high theoretical capacity of sulfur, 1675 mA h g −1 . However, the low electrical conductivity of sulfur, dissolution of polysulfides (PS) in the electrolyte, and PS shuttle toward the Li anode restricted its reach to the market. In this paper, we present a porous carbon material with multifunctionalities derived from honeycomb (HC) used as a conductive host for sulfur for the first time. Honeycomb derived carbon−sulfur composite with 80% of sulfur [HCS (80%)] gives a high reversible capacity of 1101 mA h g −1 at the 0.1 C rate after 200 cycles with 82% capacity retention. The coating of HC onto the cathode film [HCS (80%)] yielded 92% capacity retention, where sulfur is sandwiched between the two conductive hosts. Therefore, the HCS (80%) composite electrode with coating of HC [HCS (80%)−HC] exhibits good improvement in both cycling performance and rate capability compared to bare cathode HCS, even though the sulfur content of the HCS composite is as high as 80%. Thus, HCS (80%)−HC would be a potent combination for highperformance LSBs.

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“…The addition of polyindole change the intensity of diffraction peaks which means the crystallinity of wollastonite has been affected to some extent (Kato et al, 1998). The particles size of wollastonite has been increased in composites due to coating of wollastonite particles with polyindole (Chulliyote et al, 2017) and shows broad peak thus exhibits amorphous behavior (Taylan et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis and Characterization of Wollastonite Polyindole Composites to Study their Electrical Conductivity Behaviour

Javed

Kanwal

Siddiqi

et al. 2019

Pak. j. sci. ind. res. Ser. A: phys. sci.

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In this work pure polyindole and its composites with wollastonite have been prepared by using anhydrous ferric chloride (FeCl3) as an oxidizing agent. Wollastonite (CaSiO3) was prepared by sol gel method using citric acid, calcium nitrate and tetraethylorthosilicate (TEOS) for the synthesis of composites. Particle size of the synthesized wollastonite was 58.8 nm. Effect of wollastonite weight percentages ranging from 1-25% of the polyindole in polyindole wollastonite (PIn/CaSiO3) composites was studied. Chemical structure was elucidated for polyindole/wollastonite (PIn/CaSiO3) composites and wollastonite (CaSiO3) was done through Fourier transform infra red spectroscopy (FTIR), which revealed successful fabrication of polyindole/wollastonite (PIn/CaSiO3) composites and wollastonite (CaSiO3) particles. Scanning electron microscopic technique was used for surface morphological studies. Thermal stability of the composites was examined through thermogravimetry. Four probe method was used to measure DC-conductivity of the samples. Composites showed DC conductivity in the range, 3.71´10-7 Siemens per centimeter.

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Enhanced cyclability using a polyindole modified cathode material for lithium sulphur batteries

Abstract: Here we report a novel multiwall carbon nanotube/sulphur/polyindole (MWCNT/S/PIN) nanocomposite as a cathode material for lithium–sulphur (Li–S) batteries to alleviate capacity decay.

Cited by 22 publications

References 52 publications

Sulfur‐Immobilized Nitrogen and Oxygen Co–Doped Hierarchically Porous Biomass Carbon for Lithium‐Sulfur Batteries: Influence of Sulfur Content and Distribution on Its Performance

Sulfur‐Immobilized Nitrogen and Oxygen Co–Doped Hierarchically Porous Biomass Carbon for Lithium‐Sulfur Batteries: Influence of Sulfur Content and Distribution on Its Performance

Hierarchical Porous Carbon Material with Multifunctionalities Derived from Honeycomb as a Sulfur Host and Laminate on the Cathode for High-Performance Lithium–Sulfur Batteries

Facile Synthesis and Characterization of Wollastonite Polyindole Composites to Study their Electrical Conductivity Behaviour

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