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

Hyun, Jungeun; Lee, Pyoung Chan; Jung, Myoung Jo; Ishihara, Tatsumi

doi:10.5796/electrochemistry.84.836

Cited by 8 publications

(6 citation statements)

References 37 publications

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“…In the Li–S literature, reported attempts to mitigate the polysulfide shuttle effect are numerous, with many studies employing materials that alter polysulfide transport via chemical interactions or selective polysulfide rejection. − Strategies specifically involving polymers include encapsulation of sulfur particles with conductive polymers, the use of specialty cathode binders, and application of ionomers with electrostatic polysulfide rejection mechanisms. − The use of polymeric coatings on sulfur cathodes and separators has dramatically improved performance in Li–S cells, yet none have eliminated the presence of polysulfides in the electrolyte. Notably, there has been limited study of correlations between the structure of sulfur cathode polymeric functional layers and polysulfide transport.…”

Section: Introductionmentioning

confidence: 99%

Cross-Linked Ionomer Gel Separators for Polysulfide Shuttle Mitigation in Magnesium–Sulfur Batteries: Elucidation of Structure–Property Relationships

Ford

Merrill

et al. 2018

Macromolecules

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A series of crosslinked ionomer networks of varying poly(ethylene glycol) diacrylate crosslinker chain length, ionic co-monomer chemistry, and co-monomer ratio have been studied for their use as polysulfide shuttle inhibiting separators in magnesium-sulfur (Mg-S) batteries. Through the use of X-ray scattering, polysulfide diffusion experiments, conductivity measurements, and Mg-S cell cycling, it was determined that inclusion of tethered anions in polymer networks mitigates the polysulfide shuttle effect. Polysulfide crossover through networks into a bulk electrolyte can be reduced by absorption into the polymer gel, steric rejection, and electrostatic rejection, with the predominance of these mechanisms dictated by polymer composition and structure. The best network composition allowed an initial Mg-S cell discharge capacity of 522 mAh/g compared to a discharge capacity of 365 mAh/g using a literature standard glass fiber separator. The ionomer cell saw 67% capacity retention after three cycles, whereas the glass fiber separator could not complete the first charging cycle due to polysulfide shuttle.

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Section: Introductionmentioning

confidence: 99%

Cross-Linked Ionomer Gel Separators for Polysulfide Shuttle Mitigation in Magnesium–Sulfur Batteries: Elucidation of Structure–Property Relationships

Ford

Merrill

et al. 2018

Macromolecules

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“…The reported PANi‐based cathode in Li–S batteries can be also categorized into three classes according to their function, including coating layer, sulfur host materials, and cathode additives (e.g., conductive agent, binder, and precursor). [ 23,44,48,69,140–174 ] The same with the PPy‐based materials, the initial capacity, and capacity retention ratio of the PANi‐based cathode materials are also summarized in Table S2 and Figure , where most of the PANi‐based materials serving as the sulfur host exhibit the more desirable capacity and relatively higher cycling stability compared with those as the coating layer or precursor. The structural/mechanical properties and conductivity of PANi‐based cathode will influence the loading and conversion of sulfur, respectively.…”

Section: Polyanilinementioning

confidence: 99%

Conducting Polymers Meet Lithium–Sulfur Batteries: Progress, Challenges, and Perspectives

Chen

Zhao

Yang

et al. 2023

Energy & Environ Materials

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Lithium–sulfur (Li–S) batteries have attracted increased interest because of the high theoretical energy density, low cost, and environmental friendliness. Conducting polymers (CPs), as one of the most promising materials used in Li–S batteries, can not only facilitate electron transfer and buffer the large volumetric change of sulfur benefiting from their porous structure and excellent flexibility, but also enable stronger physical/chemical adsorption capacity toward polysulfides (LiPSs) when doped with abundant heteroatoms to promote the sulfur redox kinetics and achieve the high sulfur loading. This review firstly introduces the properties of various CPs including structural CPs (polypyrrole (PPy), polyaniline (PANi), polyethylene dioxothiophene [PEDOT]) and compound CPs (polyethylene oxide (PEO), polyvinyl alcohol (PVA) and poly(acrylic acid) [PAA]), and their application potential in Li–S batteries. Furthermore, the research progress of various CPs in different components (cathode, separator, and interlayer) of Li–S batteries is systematically summarized. Finally, the application perspective of the CPs in Li–S batteries as a potential guidance is comprehensively discussed.

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“…A PANI-coated sulfur composite was reported by Ishihara et al 56 It was synthesized via in situ polymerization where sulfur powder was used, producing a highly homogeneous S distribution. Results were presented for different S content, with 19 wt%, 31 wt% and 54 wt%.…”

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

Cited by 8 publications

References 37 publications

Cross-Linked Ionomer Gel Separators for Polysulfide Shuttle Mitigation in Magnesium–Sulfur Batteries: Elucidation of Structure–Property Relationships

Cross-Linked Ionomer Gel Separators for Polysulfide Shuttle Mitigation in Magnesium–Sulfur Batteries: Elucidation of Structure–Property Relationships

Conducting Polymers Meet Lithium–Sulfur Batteries: Progress, Challenges, and Perspectives

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

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