High performance pure sulfur honeycomb-like architectures synthesized by a cooperative self-assembly strategy for lithium–sulfur batteries

Liang, Xin; Kaiser, Mohammad Rejaul; Konstantinov, Konstantin; Tandiono, Richard; Wang, Zhaoxiang Zhaoxiang; Liu, Huan; Dou, Shi Xue; Wang, Jiazhao

doi:10.1039/c4ra07715f

Cited by 8 publications

(4 citation statements)

References 24 publications

(37 reference statements)

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“…The steep rising curve approaching relative pressure values of 1 is indicative of mesopores. The composite also shows a hysteresis loop and an obvious capillary condensation step, suggesting the existence of mesopores . Due to the loading of sulfur, the surface area of the S/PAN/AB composite was decreased from 60 to 10.339 m 2 g −1 .…”

Section: Resultsmentioning

confidence: 99%

Sulfur/PAN/acetylene black composite prepared by a solution processing technique for lithium–sulfur batteries

Krishnaveni

Subadevi

Raja

et al. 2018

J of Applied Polymer Sci

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A sulfur/poly(acrylonitrile)–PAN/acetylene black–AB composite, comprising sulfur and PAN encapsulated in the pores of AB was prepared by a solution‐based technique with dimethyl sulfoxide as the solvent. The composite was characterized by TGA, X‐ray diffraction, FTIR, Raman, SEM, TEM, and BET studies. The composite exhibited a high discharge capacity of 1330 mAh/g in the first cycle. The AB additive plays multiple roles in the composite, acting as a conducting matrix for electron transport and as a porous framework that adsorbs and retains electrolyte. The presence of PAN along with the porous carbon matrix in the composite provides the necessary resilience to absorb strains due to volume expansion during cycling. The observed improved performance of the composite is primarily attributed to the small size and homogeneous distribution of sulfur in the composite. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46598.

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Section: Resultsmentioning

confidence: 99%

Sulfur/PAN/acetylene black composite prepared by a solution processing technique for lithium–sulfur batteries

Krishnaveni

Subadevi

Raja

et al. 2018

J of Applied Polymer Sci

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“…Lithium/sulfur batteries show great potential for large-scale application in the various green energy fields, − as sulfur has the highest theoretical specific capacity of 1675 mAh g –1 among all solid cathode materials − and a very high specific energy density, − as well as being low-cost and nontoxic. − Nevertheless, sulfur is an electrically insulating material, which leads to poor electrochemical accessibility and low utilization in the electrode. The polysulfide anions that are generated during cycling are highly soluble in the organic electrolyte solvent.…”

Section: Introductionmentioning

confidence: 99%

“…The scaffolding carbon works as a conducting matrix and provides an open pore structure. This open pore structure, along with the porous structure of sulfur, can increase the contact area of the ternary composites with the Super-P and electrolyte, decrease the transport pathways for both electrons and lithium ions, and confine the soluble lithium polysulfides, as well as providing sufficient space to accommodate sulfur volumetric expansion during charge and discharge processes. ,, On the other hand, the amorphous carbon layer covers the surfaces of the porous sulfur particles, so that it acts as an adhesive interface to bind together the porous sulfur with the scaffolding carbon particles, further improving the conductivity. To the best of the authors’ knowledge, no one has reported a similar structure before.…”

Section: Introductionmentioning

confidence: 99%

Ternary Porous Sulfur/Dual-Carbon Architectures for Lithium/Sulfur Batteries Obtained Continuously and on a Large Scale via an Industry-Oriented Spray-Pyrolysis/Sublimation Method

Liang

Kaiser

Konstantinov

et al. 2016

ACS Appl. Mater. Interfaces

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Ternary composites with porous sulfur/dual-carbon architectures have been synthesized by a single-step spray-pyrolysis/sublimation technique, which is an industry-oriented method that features continuous fabrication of products with highly developed porous structures without the need for any further treatments. A double suspension of commercial sulfur and carbon scaffolding particles was dispersed in ethanol/water solution and sprayed at 180 °C using a spray pyrolysis system. In the resultant composites, the sulfur particles were subjected to an ultrashort sublimation process, leading to the development of a highly porous surface, and were meanwhile coated with amorphous carbon, obtained through the pyrolysis of the ethanol, which acts as an adhesive interface to bind together the porous sulfur with the scaffolding carbon particles, to form a ternary composite architecture. This material has an effective conducting-carbon/sulfur-based matrix and interconnected open pores to reduce the diffusion paths of lithium ions, buffer the sulfur volumetric expansion, and absorb electrolyte and polysulfides. Because of the unique chemistry and the structure, the composites show stable cycling performance for 200 cycles and good rate capability of 520 mAh g(-1) at 2 C. This advanced spray-pyrolysis/sublimation method is easy to scale up and shows great potential for commercialization of lithium/sulfur batteries.

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“…Extensive research has been conducted to reduce the impact of these problems by applying different techniques to load sulfur onto carbon materials [4][5][6][7][8][9]. Engineered sulfur-based cathode materials [10][11][12], as well as different electrolytes, binders [13,14], and additives [15][16][17][18][19], are also being meticulously studied to solve these problems, but yet to be successful. Moreover, in the Li/S system, it is necessary to achieve full lithiation of the sulfur during discharging to achieve higher discharge capacity.…”

Section: Introductionmentioning

confidence: 99%

A methodical approach for fabrication of binder-free Li2S-C composite cathode with high loading of active material for Li-S battery

Kaiser

Liang

Liu

et al. 2016

Carbon

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. (2016). A methodical approach for fabrication of binder-free Li2S-C composite cathode with high loading of active material for Li-S battery. Carbon, A methodical approach for fabrication of binder-free Li2S-C composite cathode with high loading of active material for Li-S battery AbstractLithium sulfide (Li2S), which has a theoretical capacity of 1166 mA h/g, is considered as a promising cathode material for the Li-S battery. The electrochemical performance of microsized Li2S is impaired, however, by its low electrical conductivity as well as first cycle high activation potential problem. In this work, microsized Li2S powder had been ball-milled with different carbon sources to synthesize Li2S-C composites as well as to find the suitable carbon sources, which were then capillary-deposited in three-dimensional multi-layered Ni foam from a dioxolane-containing mixture to fabricate a binder-free Li2S-C composite cathode. A large amount of active material (∼5 mg/cm2) was loaded in each cathode with the help of conventional capillary deposition method. Scanning electron micrographs show that the Li2S-C composite successfully fills the pores in the Ni foam through capillary action and maintains the integrity of the structure before and after cycling performance. Electrochemical performance testing shows that the capillary-deposited binder-free Li2S-C composite showed excellent cycling performance along with superior rate capability. For further improvement of electrochemical performance, a single-walled carbon nanotube free-standing layer was inserted in between the cathode and the separator which minimized polysulfides shuttle phenomenon thus improved the discharge capacity and the capacity retention. AbstractLithium sulfide (Li2S), which has a theoretical capacity of 1166 mAh/g, is considered as a promising cathode material for the Li-S battery. The electrochemical performance of microsized Li2S is impaired, however, by its low electrical conductivity as well as first cycle high activation potential problem. In this work, microsized Li2S powder had been ball-milled with different carbon sources to synthesize Li2S-C composites as well as to find the suitable carbon sources, which were then capillary-deposited in three-dimensional multi-layered Ni foam from a dioxolane-containing mixture to fabricate a binder-free Li2S-C composite cathode. A large amount of active material (~5 mg/cm 2 ) was loaded in each cathode with the help of conventional capillary deposition method. Scanning electron micrographs show that the Li2S-C composite successfully fills the pores in the Ni foam through capillary action and maintains the integrity of the structure before and after cyclingperformance. Electrochemical performance testing shows that the capillary-deposited binder-free Li2S-C composite showed excellent cycling performance along with superior rate capability. For further improvement of electrochemical performance, a single-walled carbon nanotube freestanding layer was inserted in between the cathode and the separator which ...

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High performance pure sulfur honeycomb-like architectures synthesized by a cooperative self-assembly strategy for lithium–sulfur batteries

Abstract: . (2014). High performance pure sulfur honeycomb-like architectures synthesized by a cooperative self-assembly strategy for lithium sulfur batteries. RSC Advances: an international journal to further the chemical sciences, 4 (69), 36513-36516.

Cited by 8 publications

References 24 publications

Sulfur/PAN/acetylene black composite prepared by a solution processing technique for lithium–sulfur batteries

Sulfur/PAN/acetylene black composite prepared by a solution processing technique for lithium–sulfur batteries

Ternary Porous Sulfur/Dual-Carbon Architectures for Lithium/Sulfur Batteries Obtained Continuously and on a Large Scale via an Industry-Oriented Spray-Pyrolysis/Sublimation Method

A methodical approach for fabrication of binder-free Li2S-C composite cathode with high loading of active material for Li-S battery

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