Durable polydopamine-coated porous sulfur core–shell cathode for high performance lithium–sulfur batteries

Deng, Yuanfu; Xu, Hui; Bai, Zhaowen; Huang, Baoling; Su, Jingyang; Chen, Guohua

doi:10.1016/j.jpowsour.2015.09.091

Cited by 67 publications

(43 citation statements)

References 60 publications

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“…[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. The survey scan spectrum demonstrates the existence of C, S, N and Oi nt he S/C@pDA composites (Figure 3d), consistent with the EDS analysis.…”

Section: Resultsmentioning

confidence: 99%

“…Dopamine (DA), ac ommerciallya vailable biological neurotransmitter,c ontainsb oth amine and catechol groups,w hich is readily self-polymerized to form polydopamine (pDA). [37][38][39] Thus, the pDA layer can be effortlessly formed on almost all types of materials urface (e.g. noble metals, alloys, and metal oxides) to modify their surfaces with hydrophilic groups to increase lithium ion transfer.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Introductionmentioning

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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“…After the activation process of first cycle, the anodic peak shifts toward lower voltage, narrowing down the distance between anodic and cathodic peak positions, which indicates decreased polarization [43]. In subsequent cycles, cathodic and anodic peaks are nearly overlapped, suggesting excellent cycle stability and reversible redox reactions [44].…”

Section: Resultsmentioning

confidence: 99%

Free-standing sulfur cathodes composited with carbon nanorods arrays for Li-S batteries application

Xia

Wang

et al. 2016

Materials Research Bulletin

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“…Another example of utilizing PD coatings was reported by Chen et al where sulfur colloids were first prepared by decomposition of sodium thiosulfate with PVP as a surfactant which were subsequently coated with PD via base promoted polymerization of dopamine [Fig. (a)] . Li‐S batteries tested with these PD coated sulfur nanospheres as the electroactive material exhibited long cycle lifetimes with excellent capacity retention delivering a specific capacity around 600 mAh/g sulfur after 900 cycles [Fig.…”

Section: Cathodementioning

confidence: 99%

The use of polymers in Li‐S batteries: A review

Dirlam¹,

Glass²,

Char

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

135

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Recent developments in the use of polymeric materials as device components in lithium sulfur (Li-S) batteries are reviewed. Li-S batteries have generated tremendous interest as a next generation battery exhibiting charge capacities and energy densities that greatly exceed Li-ion battery technologies. In this Highlight, the first comprehensive review focusing on the use of polymeric materials throughout these devices is provided. The key role polymers play in Li-S technology is presented and organized in terms of the basic components that comprise a Li-S battery: the cathode, separator, electrolyte, and anode. After a straightforward introduction to the construction of a conventional Li-S device and the mechanisms at work during cell operation, the use of polymers as binders, protective coatings, separators, electrolytes, and electroactive materials in Li-S batteries will be reviewed.

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Durable polydopamine-coated porous sulfur core–shell cathode for high performance lithium–sulfur batteries

Cited by 67 publications

References 60 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

Free-standing sulfur cathodes composited with carbon nanorods arrays for Li-S batteries application

The use of polymers in Li‐S batteries: A review

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