Rational in-situ construction of three-dimensional reduced graphene oxide supported Li2S/C composite as enhanced cathode for rechargeable lithium–sulfur batteries

Wang, D.H.; Xia, Xinhui; Xie, D. Z.; Niu, Xiaoqing; Ge, Xiang; Gu, C.D.; Wang, X.L.; Tu, Jiangping

doi:10.1016/j.jpowsour.2015.09.002

Cited by 67 publications

(27 citation statements)

References 52 publications

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“…The peak at 1418 cm À1 is ascribed to the intrinsic benzene skeleton vibration definitely.T he peaks at 1273 and 1204 cm À1 result from the stretching vibration of CÀOa nd CÀNr espectively,w hich represent the dehydration reactions of hydroxies and amidogens between DA molecules. [14,48] The peak at 1650 cm À1 is assigned to the stretching vibration of C=Og enerated from the oxidization reactions of catechol groups in DA molecules. [31,39] The surface composition of S/C@pDA composites is investigated by X-ray photoelectron spectroscopy (XPS)a nalysis.…”

Section: Resultsmentioning

confidence: 99%

Performance Enhancement of a Sulfur/Carbon Cathode by Polydopamine as an Efficient Shell for High‐Performance Lithium–Sulfur Batteries

Zhang

Xie

Zhong

et al. 2017

Chemistry A European J

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Lithium-sulfur batteries (LSBs) are considered to be among the most promising next-generation high-energy batteries. It is a consensus that improving the conductivity of sulfur cathodes and impeding the dissolution of lithium polysulfides are two key accesses to high-performance LSBs. Herein we report a sulfur/carbon black (S/C) cathode modified by self-polymerized polydopamine (pDA) with the assistance of polymerization treatment. The pDA acts as a novel and effective shell on the S/C cathode to stop the shuttle effect of polysulfides. By the synergistic effect of enhanced conductivity and multiple blocking effect for polysulfides, the S/C@pDA electrode exhibits improved electrochemical performances including large specific capacity (1135 mAh g at 0.2 C), high rate capability (533 mAh g at 5 C) and long cyclic life (965 mAh g after 200 cycles). Our smart design strategy may promote the development of high-performance LSBs.

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Section: Resultsmentioning

confidence: 99%

Performance Enhancement of a Sulfur/Carbon Cathode by Polydopamine as an Efficient Shell for High‐Performance Lithium–Sulfur Batteries

Zhang

Xie

Zhong

et al. 2017

Chemistry A European J

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“…Such a facile, cost-effective method has attracted the attention of many researchers [42][43][44][45][46][47][48][62][63][64]. rough the above method, Li 2 S can be combined with carbon in various structures by dispersing Li 2 SO 4 in different carbon matrixes.…”

Section: In Situ Reactionmentioning

confidence: 99%

Lithium Sulfide as Cathode Materials for Lithium-Ion Batteries: Advances and Challenges

Zhou

Zhang

Wang

et al. 2020

Journal of Chemistry

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Due to the ever-growing demand for high-density energy storage devices, lithium-ion batteries with a high-capacity cathode and anode are thought to be the next-generation batteries for their high energy density. Lithium sulfide (Li 2 S) is considered the promising cathode material for its high theoretical capacity, high melting point, affordable volume expansion, and lithium composition. is review summarizes the activation and lithium storage mechanism of Li 2 S cathodes. e design strategies in improving the electrochemical performance are highlighted. e application of the Li 2 S cathode in full cells of lithium-ion batteries is discussed. e challenges and new directions in commercial applications of Li 2 S cathodes are also pointed out.

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“…[16][17][18][19] In addition, conversion from Li 2 St oSis accompanied with volume shrinkage, creating enough space to accommodatev olumetric expansion duringt he following cycles. [28,29] To date, great efforts have been made to conquer these problems and improve the electrochemical performance of Li 2 Sc athodes. [25][26][27] However,s imilar to sulfur cathodes, Li 2 Sc athodes are still hindered by their poor electricalc onductivitya nd the "shuttle effect" of polysulfides.…”

Section: Introductionmentioning

confidence: 99%

Vertical‐Aligned Li₂S–Graphene Encapsulated within a Carbon Shell as a Free‐Standing Cathode for Lithium–Sulfur Batteries

Wang

Xia

Wang

et al. 2017

Chemistry A European J

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Construction of a novel matrix with both high conductivity and an excellent confinement effect for polysulfides is of great importance for developing high-performance lithium-sulfur (Li-S) batteries. In this work, we have developed a double-modification strategy to integrate lithium sulfide (Li S) into a conductive composite network consisting of vertical graphene (VG) arrays and an amorphous carbon shell, forming an integrated cathode (VG/Li S-C). Facile liquid-solution/evaporation methods in combination with chemical vapor deposition were successfully adopted for preparation of the above cathode. Due to the enhanced electrical conductivity and noticeable blocking effect for the shuttle of polysulfides, the binder-free flexible VG/Li S-C cathode exhibits high rate performance and reinforced cycles (656.2 mAh g after 100 cycles). The pronounced electrochemical performance is ascribed to the unique architecture with a coherent conductive network of VG and the carbon shell, which not only provides a conductive network for fast reaction kinetics, but also forms a durable protective shield to suppress the shuttle of polysulfides. Our research further demonstrates the synergistic effectiveness by means of inner and outer carbon matrixes for electrochemical enhancement of Li-S batteries.

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Rational in-situ construction of three-dimensional reduced graphene oxide supported Li2S/C composite as enhanced cathode for rechargeable lithium–sulfur batteries

Cited by 67 publications

References 52 publications

Performance Enhancement of a Sulfur/Carbon Cathode by Polydopamine as an Efficient Shell for High‐Performance Lithium–Sulfur Batteries

Performance Enhancement of a Sulfur/Carbon Cathode by Polydopamine as an Efficient Shell for High‐Performance Lithium–Sulfur Batteries

Lithium Sulfide as Cathode Materials for Lithium-Ion Batteries: Advances and Challenges

Vertical‐Aligned Li₂S–Graphene Encapsulated within a Carbon Shell as a Free‐Standing Cathode for Lithium–Sulfur Batteries

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Rational in-situ construction of three-dimensional reduced graphene oxide supported Li2S/C composite as enhanced cathode for rechargeable lithium–sulfur batteries

Cited by 67 publications

References 52 publications

Performance Enhancement of a Sulfur/Carbon Cathode by Polydopamine as an Efficient Shell for High‐Performance Lithium–Sulfur Batteries

Performance Enhancement of a Sulfur/Carbon Cathode by Polydopamine as an Efficient Shell for High‐Performance Lithium–Sulfur Batteries

Lithium Sulfide as Cathode Materials for Lithium-Ion Batteries: Advances and Challenges

Vertical‐Aligned Li2S–Graphene Encapsulated within a Carbon Shell as a Free‐Standing Cathode for Lithium–Sulfur Batteries

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Product

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Vertical‐Aligned Li₂S–Graphene Encapsulated within a Carbon Shell as a Free‐Standing Cathode for Lithium–Sulfur Batteries