A robust polymeric binder based on complementary multiple hydrogen bonds in lithium-sulfur batteries

Chu, Ying; Cui, Ximing; Kong, Weilun; Du, Keya; Zhen, Liang; Wang, Liqiu

doi:10.1016/j.cej.2021.130844

Cited by 35 publications

(29 citation statements)

References 44 publications

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“…Binder, as an indispensable component in the process of sulfur cathode preparation, can integrate active electrode materials, conductive agents and collectors, enduing sulfur cathode with overall continuity and good mechanical properties. [11][12][13][14] Currently, the polyvinylidene fluoride (PVDF), carboxymethyl cellulose, and polyacrylonitrile have been widely employed as binder and successfully applied to lithium-ion batteries and supercapacitors. [15][16][17] Unfortunately, above binders performed actually barely satisfactory in Li-S batteries due to incapability of binding LiPs.…”

Section: Introductionmentioning

confidence: 99%

Synergism of Flame‐Retardant, Self‐Healing, High‐Conductive and Polar to a Multi‐Functional Binder for Lithium–Sulfur Batteries

Liu

Chen

Pan

et al. 2022

Adv Funct Materials

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In this work, a multifunctional binder with self‐healing, flame retardant, high conductivity, and abundant polar groups is prepared by the free radical polymerization method and applied to lithium–sulfur (Li‐S) batteries to achieve high safety and exceptional electrochemical performance. The self‐healing characteristic of binder induced by intermolecular hydrogen bonds and SS dynamic covalent bonds can repair volume expansion cracks. The polar groups and excellent conductivity endue binder with strong chemisorption on polysulfides and fast charge transportation, which can effectively inhibit the shuttle effect and accelerate polysulfides redox kinetics. More important, the considerable flame retardant performance of binder can improve the safety of the LiS batteries. As a result, the LiS cells using FHCP binder deliver an outstanding cycle stability of a high‐capacity retention rate of 85% after 100 cycles at 0.2 C, and a high reversible area specific capacity of 5.25 mAh cm–2 at a sulfur loading of 4.72 mg cm–2 and a correspondingly lean electrolyte condition (E/S ratio = 6 µL mg–1).

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Section: Introductionmentioning

confidence: 99%

Synergism of Flame‐Retardant, Self‐Healing, High‐Conductive and Polar to a Multi‐Functional Binder for Lithium–Sulfur Batteries

Liu

Chen

Pan

et al. 2022

Adv Funct Materials

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“…FTIR was used to investigate the interactions between SP and PA (Figure a). A broad peak at ∼3200–3600 cm –1 is ascribed to the stretching vibrations of the O–H bonds . In the spectrum of SP, the peaks at 1635, 1508, 1410, and 1028 cm –1 are attributed to the CO stretch vibration, in-plane bending vibration of N–H, C–N stretching, and C–O stretching, respectively .…”

Section: Results and Discussionmentioning

confidence: 99%

“…A broad peak at ∼3200−3600 cm −1 is ascribed to the stretching vibrations of the O−H bonds. 49 In the spectrum of SP, the peaks at 1635, 1508, 1410, and 1028 cm −1 are attributed to the CO stretch vibration, in-plane bending vibration of N−H, C−N stretching, and C− O stretching, respectively. 50 With the addition of PA, the peaks shifted from 1635, 1508, and 1028 cm −1 to 1637, 1520, and 1032 cm −1 in the SP−PA binder.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Aqueous Supramolecular Binder for a Lithium–Sulfur Battery with Flame-Retardant Property

Qiu

Yang

et al. 2021

ACS Appl. Mater. Interfaces

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A lithium−sulfur (Li−S) battery based on multielectron chemical reactions is considered as a next-generation energy-storage device because of its ultrahigh energy density. However, practical application of a Li−S battery is limited by the large volume changes, insufficient ion conductivity, and undesired shuttle effect of its sulfur cathode. To address these issues, an aqueous supramolecular binder with multifunctions is developed by cross-linking sericin protein (SP) and phytic acid (PA). The combination of SP and PA allows one to control the volume change of the sulfur cathode, benefit soluble polysulfides absorbing, and facilitate transportation of Li + . Attributed to the above merits, a Li−S battery with the SP− PA binder exhibits a remarkable cycle performance improvement of 200% and 120% after 100 cycles at 0.2 C compared with Li−S batteries with PVDF and SP binders. In particular, the SP−PA binder in the electrode displays admirable flameretardant performance due to formation of an isolating layer and the release of radicals.

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“…The natural stability of carbon chains can effectively improve the structural stability and electrochemical performance of cathode materials. Many types of organic polymers can be used for the preparation of sulfur-containing polymers with carbon chains as the main chains, such as polyacrylic acid (PAA), [80][81][82][83] polyacrylonitrile (PAN), [84][85][86] polypyrrole (PPy) [87][88][89][90] and polyaniline (PANI). 91,92 In this part, we discuss and analyze the molecular structure design of polysulfanes with carbon chains as the main chains by different methods.…”

Section: Polymers Based On Carbon Chains As Main Chainsmentioning

confidence: 99%

Molecular structure-controlled synthesis of sulfur-containing polymers for rechargeable Li–S batteries

Cheng

Chen

et al. 2022

J. Mater. Chem. A

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A robust polymeric binder based on complementary multiple hydrogen bonds in lithium-sulfur batteries

Cited by 35 publications

References 44 publications

Synergism of Flame‐Retardant, Self‐Healing, High‐Conductive and Polar to a Multi‐Functional Binder for Lithium–Sulfur Batteries

Synergism of Flame‐Retardant, Self‐Healing, High‐Conductive and Polar to a Multi‐Functional Binder for Lithium–Sulfur Batteries

Aqueous Supramolecular Binder for a Lithium–Sulfur Battery with Flame-Retardant Property

Molecular structure-controlled synthesis of sulfur-containing polymers for rechargeable Li–S batteries

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