One-step synthesis of branched sulfur/polypyrrole nanocomposite cathode for lithium rechargeable batteries

Zhang, Yongguang; Bakenov, Zhumabay; Zhao, Yan; Konarov, Aishuak; Malik, Muhammad; Paron, Todd; Chen, P.

doi:10.1016/j.jpowsour.2012.02.006

Cited by 122 publications

(79 citation statements)

References 33 publications

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“…Inset in Fig. 5a presents the PPy nanowire diameter distribution obtained from the SEM data [9]. PPy nanowires have uniform diameter distribution with an average diameter of 58.3 nm.…”

Section: Resultsmentioning

confidence: 99%

“…Much effort has been dedicated to overcome the low conductivity issues of S cathode, including the preparation of various types of conductive sulfur/carbon [6e8] and sulfur/conductive polymer composites [9e11]. Among these, the mixtures of PPy with sulfur have been intensively scrutinized, due to the high absorption ability of PPy, which can prevent dissolution of polysulfides into the electrolyte [9].…”

Section: Introductionmentioning

confidence: 99%

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Well-dispersed sulfur anchored on interconnected polypyrrole nanofiber network as high performance cathode for lithium-sulfur batteries

Yin

Liu

Zhang

et al. 2017

Solid State Sciences

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a b s t r a c tPreparation of novel sulfur/polypyrrole (S/PPy) composite consisting well-dispersed sulfur particles anchored on interconnected PPy nanowire network was demonstrated. In such hybrid structure, the asprepared PPy clearly displays a three-dimensionally cross-linked and hierarchical porous structure, which was utilized in the composite cathode as a conductive network trapping soluble polysulfide intermediates and enhancing the overall electrochemical performance of the system. Benefiting from this unique structure, the S/PPy composite demonstrated excellent cycling stability, resulting in a discharge capacity of 931 mAh g À1 at the second cycle and retained about 54% of this value over 100 cycles at 0.1 C. Furthermore, the S/PPy composite cathode exhibits a good rate capability with a discharge capacity of 584 mAh g À1 at 1 C.

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“…Inset in Fig. 5a presents the PPy nanowire diameter distribution obtained from the SEM data [9]. PPy nanowires have uniform diameter distribution with an average diameter of 58.3 nm.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Well-dispersed sulfur anchored on interconnected polypyrrole nanofiber network as high performance cathode for lithium-sulfur batteries

Yin

Liu

Zhang

et al. 2017

Solid State Sciences

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“…46 Synthesis of S-polypyrrole composite materials encompasses methods involving in situ polymerization, [47][48][49] as well as methods where first polymerization is carried out, followed by encapsulation of elemental sulfur particles. 50,51 Materials have been obtained with a sulfur content that covers a wide range of values, from 50 wt% and up to 80 wt% sulfur content (see Table I). …”

Section: Sulfur-polymer Composite Cathode Materialsmentioning

confidence: 99%

“…47,48,52 Conversely, in branched structures the sulfur particles are homogenously distributed over the highly branched PPy nanowires. 50 This homogeneous distribution of sulfur enhances its contact with the conductive polymer, leading to an improvement in sulfur utilization. The porous branched nanostructure with high surface and absorbing ability allows to accommodate the volume changes of the composite and the absorption of polysulfides into the pores during the charge and discharge processes.…”

Section: Sulfur-polymer Composite Cathode Materialsmentioning

confidence: 99%

Review—Non-Carbonaceous Materials as Cathodes for Lithium-Sulfur Batteries

Arias

Tesio

Flexer

2018

J. Electrochem. Soc.

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Lithium-sulfur batteries are presented as a promising alternative for the operation of those devices, including electric vehicles, that require higher specific capacity than current lithium-ion technology. Unfortunately, lithium-sulfur batteries suffer from several limitations that still produce a relatively fast capacity fading and poor utilization of active materials. In order to alleviate the disadvantages that arise at the cathode, several researchers have searched for new electrode materials. Because of the long standing tradition in the use of carbons in energy storage systems, carbonaceous cathodes have been the most popular choice. Recently, however, there has been a trend for the study of non-carbonaceous materials as cathodes in lithium-sulfur systems. Materials such as polymers, metal oxides, metal carbides, amongst many others were reported, showing excellent properties which make them compete side by side with state of the art carbonaceous cathodes. These materials have generally improved the conductivity of the conventional sulfur electrode, and have provided a 3D soft adsorbent porous structure, which efficiently traps polysulfides. These characteristics are reflected in an improved electrochemical performance, reaching, in some cases, capacity retention values close to 1000 mA h g −1 after 100 cycles at high discharge rate. Here, we propose a review of these non-carbonaceous cathodes. The specific energy of current lithium-ion secondary batteries is very close to reaching its theoretical thermodynamic limit.1 This specific energy value is limited for some technological applications, such as long autonomy range electric vehicles.2 Although no other rechargeable battery technology has shown the fantastic cyclability and stability of lithium-ion batteries, the search for new rechargeable battery technologies is a very active field of research.Lithium-sulfur (Li-S) batteries are one of several alternative systems that have been proposed for higher specific energy density rechargeable batteries. A lithium-sulfur battery consists of a lithium anode, an organic electrolyte and a sulfur composite cathode.2-5 During the discharge process, at the anode, metallic lithium is oxidized to lithium cations (Li + ), while at the cathode, and in the presence of lithium ions, elemental sulfur is reduced to lithium sulfide (Li 2 S). These batteries are presented as a promising alternative energy storage system, since they are relatively light and they have the advantage of a high theoretical energy density of 2600 Wh kg −1 , which is almost 6 times higher than that of commercial lithium-ion batteries (387 Wh kg −1 for LiCoO 2 -graphite battery). 6 In addition, sulfur has a very low cost and is largely abundant in nature. [7][8][9] The foundational stone on lithium-sulfur cells was led in 1962 by Herbert and Ulam, who proposed the use of elemental sulfur as cathode material. 10Despite their numerous theoretical advantages, lithium sulfur cells are still not commercially available due to a series of limitations. 11Sev...

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“…Graphene, [3][4][5][6] carbon nanotubes (CNTs), [7][8][9] and carbon [10][11][12] have been investigated as sulfurbased cathode materials. Carbon-conductive polymer composite materials [13][14][15][16][17][18][19] and conductive polymer matrices [20][21][22][23][24][25][26][27][28][29] have also been widely tested for their ability to improve battery performance. Huang et al showed that graphene-coated sulfur composites could be used to improve cycling performance.…”

Section: Introductionmentioning

confidence: 99%

A Simple Preparation of Polyaniline-coated Sulfur Composites for use as Cathodes in Li–S Batteries

Hyun

Lee

Jung³

et al. 2016

Electrochemistry

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A polyaniline (PANi)-coated sulfur cathode was prepared by in-situ polymerization to improve the performance of Li-S batteries and prevent polysulfide dissolution. Because PANi polymerization requires only the addition of sulfur powder, the polymerization method was simple. Battery performance testing was conducted using various sulfur ratios, with the best performance being exhibited by the 31 wt% sulfur PANi composite (approximately 500 mAh g −1 S after 50 cycles from an initial capacity of 903 mAh g −1 S). Transmission electron microscopy images confirmed that sulfur was coated by an approximately 10-nm-thick layer of PANi. Cycle testing was conducted at a rate of 0.2 C with an electrode loading of 2 mg cm −2 of sulfur. Thus, a highly homogenous distribution of sulfur particles in PANi was achieved, resulting in sulfur-coated composite materials and allowing for the preparation of a conductive polymer by a relatively simple sulfur distribution method.

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One-step synthesis of branched sulfur/polypyrrole nanocomposite cathode for lithium rechargeable batteries

Cited by 122 publications

References 33 publications

Well-dispersed sulfur anchored on interconnected polypyrrole nanofiber network as high performance cathode for lithium-sulfur batteries

Well-dispersed sulfur anchored on interconnected polypyrrole nanofiber network as high performance cathode for lithium-sulfur batteries

Review—Non-Carbonaceous Materials as Cathodes for Lithium-Sulfur Batteries

A Simple Preparation of Polyaniline-coated Sulfur Composites for use as Cathodes in Li–S Batteries

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One-step synthesis of branched sulfur/polypyrrole nanocomposite cathode for lithium rechargeable batteries

Cited by 122 publications

References 33 publications

Well-dispersed sulfur anchored on interconnected polypyrrole nanofiber network as high performance cathode for lithium-sulfur batteries

Well-dispersed sulfur anchored on interconnected polypyrrole nanofiber network as high performance cathode for lithium-sulfur batteries

Review—Non-Carbonaceous Materials as Cathodes for Lithium-Sulfur Batteries

A Simple Preparation of Polyaniline-coated Sulfur Composites for use as Cathodes in Li&ndash;S Batteries

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A Simple Preparation of Polyaniline-coated Sulfur Composites for use as Cathodes in Li–S Batteries