3D Graphene‐Foam–Reduced‐Graphene‐Oxide Hybrid Nested Hierarchical Networks for High‐Performance Li–S Batteries

Hu, Guofeng; Xu, Chuan; Sun, Zhenhua; Wang, S.G.; Cheng, Hui‐Ming; Li, Feng; Ren, Wencai

doi:10.1002/adma.201504765

Cited by 512 publications

(281 citation statements)

References 46 publications

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“…Many efforts have been made to solve the shuttle effect that is to suppress the diffusion of LiPSs 3, 5, 6. Various carbon materials have been used as the sulfur host and conductive framework in Li–S batteries because of their high conductivity and large surface area 3, 6, 7. However, carbon materials always have a nonpolar surface, which leads to their relatively low affinity for polar LiPSs and does not help restrict LiPS shuttling.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Effects in Lithium–Sulfur Batteries: Promoted Sulfur Transformation and Reduced Shuttle Effect

et al. 2017

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Lithium–sulfur (Li–S) battery has emerged as one of the most promising next‐generation energy‐storage systems. However, the shuttle effect greatly reduces the battery cycle life and sulfur utilization, which is great deterrent to its practical use. This paper reviews the tremendous efforts that are made to find a remedy for this problem, mostly through physical or chemical confinement of the lithium polysulfides (LiPSs). Intrinsically, this “confinement” has a relatively limited effect on improving the battery performance because in most cases, the LiPSs are “passively” blocked and cannot be reused. Thus, this strategy becomes less effective with a high sulfur loading and ultralong cycling. A more “positive” method that not only traps but also increases the subsequent conversion of LiPSs back to lithium sulfides is urgently needed to fundamentally solve the shuttle effect. Here, recent advances on catalytic effects in increasing the rate of conversion of soluble long‐chain LiPSs to insoluble short‐chain Li2S2/Li2S, and vice versa, are reviewed, and the roles of noble metals, metal oxides, metal sulfides, metal nitrides, and some metal‐free materials in this process are highlighted. Challenges and potential solutions for the design of catalytic cathodes and interlayers in Li–S battery are discussed in detail.

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Section: Introductionmentioning

confidence: 99%

Catalytic Effects in Lithium–Sulfur Batteries: Promoted Sulfur Transformation and Reduced Shuttle Effect

et al. 2017

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“…Excellent cycling stability with up to 90% capacity retention was demonstrated by the electrodes, which is mainly attributed to the effectively reduced lithium polysulfide agglomeration due to the abundant pores of the dendrimers. Nevertheless, it should be noted that the reversible discharge capacity is around 600 mA h g −1 at 0.2 C. In other words, only an areal discharge capacity of around 2.4 mA h cm −2 can be delivered, which is even less than the state-of-theart Li-ion batteries (typically 4 mA h cm −2 ) [163,170]. A 7.2 mg cm −2 sulfur-loaded electrode with similar components was also obtained by using a modified polybenzimidazole (mPBI).…”

Section: A 2d Current Collector Design For High-loading Cathodesmentioning

confidence: 94%

“…However, they are still a long way from their practical application due to the following reasons. Firstly, the scaffolds of most cathodes are prepared via freeze-drying [88,170], filtration [43,186], chemical vapor deposition (CVD) [170,189], and electrostatic spinning methods [68]. The cost and large-scale reliability should be taken into consideration for industrial application.…”

Section: B 3d Current Collector Design For High-loading Cathodesmentioning

confidence: 99%

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

Yang

Adair

et al. 2018

Electrochem. Energ. Rev.

343

206

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Lithium-sulfur (Li-S) batteries have been considered as one of the most promising energy storage devices that have the potential to deliver energy densities that supersede that of state-of-the-art lithium ion batteries. Due to their high theoretical energy density and cost-effectiveness, Li-S batteries have received great attention and have made great progress in the last few years. However, the insurmountable gap between fundamental research and practical application is still a major stumbling block that has hindered the commercialization of Li-S batteries. This review provides insight from an engineering point of view to discuss the reasonable structural design and parameters for the application of Li-S batteries. Firstly, a systematic analysis of various parameters (sulfur loading, electrolyte/sulfur (E/S) ratio, discharge capacity, discharge voltage, Li excess percentage, sulfur content, etc.) that influence the gravimetric energy density, volumetric energy density and cost is investigated. Through comparing and analyzing the statistical information collected from recent Li-S publications to find the shortcomings of Li-S technology, we supply potential strategies aimed at addressing the major issues that are still needed to be overcome. Finally, potential future directions and prospects in the engineering of Li-S batteries are discussed.

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“…Graphene-based [142] films were used as such an interlayer and the cycling performance of the lithium-sulfur battery was greatly improved [125,126]. More recently, Liu et al reported a naphthalimide-functionalized poly(amidoamine) dendrimer and GO composite (Naph-Den-MGO) film, which combined chemical trapping and physical blocking and effectively suppressed LiPS shuttling [127].…”

Section: Graphene Papers or Membranesmentioning

confidence: 99%

“…As a typical example, Hu et al reported a highly conductive graphene foam nested with a rGO aerogel (GF-rGO), as a current collector to solve the "double low" issues of Li-S batteries. This 3D graphene hierarchical network enables both a high sulfur content of 83% and sulfur mass loading of 9.8 mg cm −2 in the cathode to deliver an ultrahigh areal capacity of 10.3 mAh cm −2 together with excellent cyclability [142].…”

Section: Graphene Monoliths With 3d Networkmentioning

confidence: 99%

Engineering Graphenes from the Nano- to the Macroscale for Electrochemical Energy Storage

Han

Wei

Zhang

et al. 2018

Electrochem. Energ. Rev.

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Carbon is a key component in current electrochemical energy storage (EES) devices and plays a crucial role in the improvement in energy and power densities for the future EES devices. As the simplest carbon and the basic unit of all sp 2 carbons, graphene is widely used in EES devices because of its fascinating and outstanding physicochemical properties; however, when assembled in the macroscale, graphene-derived materials do not demonstrate their excellence as individual sheets mostly because of unavoidable stacking. This review proposal shows to engineer graphene nanosheets from the nano-to the macroscale in a well-designed and controllable way and discusses how the performance of the graphene-derived carbons depends on the individual graphene sheets, nanostructures, and macrotextures. Graphene-derived carbons in EES applications are comprehensively reviewed with three representative devices, supercapacitors, lithium-ion batteries, and lithium-sulfur batteries. The review concludes with a comment on the opportunities and challenges for graphene-derived carbons in the rapidly growing EES research area.

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3D Graphene‐Foam–Reduced‐Graphene‐Oxide Hybrid Nested Hierarchical Networks for High‐Performance Li–S Batteries

Cited by 512 publications

References 46 publications

Catalytic Effects in Lithium–Sulfur Batteries: Promoted Sulfur Transformation and Reduced Shuttle Effect

Catalytic Effects in Lithium–Sulfur Batteries: Promoted Sulfur Transformation and Reduced Shuttle Effect

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

Engineering Graphenes from the Nano- to the Macroscale for Electrochemical Energy Storage

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