Vanadium dioxide plates reduced graphene oxide as sulfur cathodes for efficient polysulfides trap in long-life lithium-sulfur batteries

Chen, Bing; Wei, Jian; Li, Xueting; Ji, Yuxuan; Liang, Di; Chen, Tiantian

doi:10.1016/j.jcis.2022.09.028

Cited by 21 publications

(8 citation statements)

References 44 publications

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“…Moreover, the porous structure is very favorable to the massive loading of sulfur, and the average sulfur loading is 5.2 mg cm –2 . The FE-SEM image and EDS mapping shown in Figure d,e confirm the uniform distribution of the S element on the graphene lamellae, which facilitates the electrochemical conversion of active material during the reaction . The diffraction peak at 25° in the XRD pattern of rGOF (Figure f) corresponds to the (002) crystal plane of graphene.…”

Section: Resultsmentioning

confidence: 57%

“…The FE-SEM image and EDS mapping shown in Figure 3d,e confirm the uniform distribution of the S element on the graphene lamellae, which facilitates the electrochemical conversion of active material during the reaction. 44 The diffraction peak at 25°in the XRD pattern of rGOF (Figure 3f) corresponds to the (002) crystal plane of graphene. Some of the sharp characteristic peaks on rGOF@S (between 15−60°) correspond to S 8 , which can be used as evidence of the loading of sulfur.…”

Section: Resultsmentioning

confidence: 99%

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A Heterostructured Gel Polymer Electrolyte Modified by MoS₂ for High-Performance Lithium–Sulfur Batteries

Chi,

Ding,

Ding

et al. 2023

ACS Appl. Mater. Interfaces

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In Li−S batteries, the shuttle effect of polysulfide lithium (LiPS) on the cathode side and the growth of lithium dendrites on the anode side are two major problems that lead to an insufficient cycle life. Herein, in light of the challenges brought on by the different chemical environments on both sides of Li−S batteries, a heterostructured poly(ethyl acrylate-co-ionic liquid) gel electrolyte with a single-sided electrocatalytic reduced graphene oxide/MoS 2 coating (MoS 2 @rGO-GPE) was developed in order to assemble a high-performance Li−S battery with a self-supporting graphene sulfur cathode. In such a device architecture, there is multiposition suppression of the shuttle effect; that is, the confinement of the graphene foam, the catalysis of the MoS 2 composite, and the capture of the gel polymer electrolyte. Our results show that the ionic conductivity of the heterostructured electrolyte is 1.98 mS cm −1 , and the Li ion transference number reaches 0.81. The assembled lithium−sulfur battery displays a high initial discharge capacity of 1027 mAh g −1 at 0.1 C, superior cycle stability (80% capacity retention after 500 cycles), and excellent rate performance. This design strategy provides a valuable route for the development of high-performance lithium−sulfur batteries.

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Section: Resultsmentioning

confidence: 57%

Section: Resultsmentioning

confidence: 99%

A Heterostructured Gel Polymer Electrolyte Modified by MoS₂ for High-Performance Lithium–Sulfur Batteries

Chi,

Ding,

Ding

et al. 2023

ACS Appl. Mater. Interfaces

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“…However, there are clear limits to thermal stability, ionic conductivity, and LiPS suppression for LSBs if polyolefin separators remain the base separator. Similarly, many new materials are tested as cathode materials for their excellent LiPS affinity, thermal stability, and electrolyte affinity that have potential as modifiers for NF separators [ 144 , 145 , 146 , 147 , 148 , 149 ]. There is untapped potential in NF separators, especially if we use the various materials and lessons learned from modifying polyolefin-based separators and cathode materials.…”

Section: Future Perspectivesmentioning

confidence: 99%

Recent Development in Novel Lithium-Sulfur Nanofiber Separators: A Review of the Latest Fabrication and Performance Optimizations

2023

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Lithium-Sulfur batteries (LSBs) are one of the most promising next-generation batteries to replace Li-ion batteries that power everything from small portable devices to large electric vehicles. LSBs boast a nearly five times higher theoretical capacity than Li-ion batteries due to sulfur’s high theoretical capacity, and LSBs use abundant sulfur instead of rare metals as their cathodes. In order to make LSBs commercially viable, an LSB’s separator must permit fast Li-ion diffusion while suppressing the migration of soluble lithium polysulfides (LiPSs). Polyolefin separators (commonly used in Li-ion batteries) fail to block LiPSs, have low thermal stability, poor mechanical strength, and weak electrolyte affinity. Novel nanofiber (NF) separators address the aforementioned shortcomings of polyolefin separators with intrinsically superior properties. Moreover, NF separators can easily be produced in large volumes, fine-tuned via facile electrospinning techniques, and modified with various additives. This review discusses the design principles and performance of LSBs with exemplary NF separators. The benefits of using various polymers and the effects of different polymer modifications are analyzed. We also discuss the conversion of polymer NFs into carbon NFs (CNFs) and their effects on rate capability and thermal stability. Finally, common and promising modifiers for NF separators, including carbon, metal oxide, and metal-organic framework (MOF), are examined. We highlight the underlying properties of the composite NF separators that enhance the capacity, cyclability, and resilience of LSBs.

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“… Recently, MXenes have been studied as a suitable electrode for the Li–S battery because of inimitable properties, such as a high surface area, efficient electron tranfer, and tunable surface chemistry. − A highly efficient composite of Ti 3 C 2 T x MXene and N-RGO electrode has been reported by Wang et al, which delivered 1180 mAh g –1 over 200 cycles at 0.1 C. The introduction of a N heteroatom into the graphene framework provides active sites for endorsing polar surface properties and contributes to the enhancement of the battery performance . Chen et al . reported VO 2 /RGO/S composites as a cathode for an efficient polysulfide trap in a Li–S battery.…”

Section: Energy Storage Applicationsmentioning

confidence: 99%

“…150 Chen et al 151 reported VO 2 /RGO/S composites as a cathode for an efficient polysulfide trap in a Li−S battery. The synthesized composite efficiently anchored polysulfide via VO 2 involvement, and RGO provided extensively higher electron conductivity, relieved any volume change for S, and shortened the electron path, which eventually resulted in 861 mAh g −1 after 100 cycles at a current density of 0.1 C. 151 GO in its reduced form has shown tremendous applications as an excellent cathode material in Li−S batteries. Various studies have shown that RGO can be a suitable material for energy storage in Li−S batteries.…”

Section: Lithium−sulfur (Li−s)mentioning

confidence: 99%

Electrochemical Energy Storage and Conversion Applications of Graphene Oxide: A Review

Gautam,

Kanade,

Kale

2023

Energy Fuels

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Graphene oxide (GO), a single sheet of graphite oxide, has shown its potential applications in electrochemical energy storage and conversion devices as a result of its remarkable properties, such as large surface area, appropriate mechanical stability, and tunability of electrical as well as optical properties. Furthermore, the presence of hydrophilic functionalities on basal and edge planes induces other relevant properties, which make GO an attractive material for electrochemical applications. On account of having structural diversity and enhanced overall crucial properties, GO and its composites have attracted much attention in contribution of energy storage devices, such as batteries, supercapacitors, and energy conversion devices, such as fuel cells and water electrolyzers. Previous review reports demonstrated the individual applications of GO or reduced graphene oxide (RGO) in either of the electrochemical energy devices. The present review highlights all of the recent developments of GO and RGO in both the energy storage and conversion devices along with the recent synthesis methodologies, which are crucial to unveil all of the outperforming properties of GO and RGO. The transition in the synthesis of GO with various chemical methods, including the Brodie and improved Hummers methods, to electrochemical approaches have been described with recent developments as well as highlights of the importance of electrochemical energy in the synthesis of GO. Utilization of GO in energy storage applications predominantly as electrodes and electrolytes and membranes in energy conversion devices further diversify its multiple applicability as a result of its variable functional properties. Multiple energy storage devices, such as Li-ion, Na-ion, Li−S, and flow batteries and supercapacitors, have shown the enhanced performance with the introduction of GO and RGO. Furthermore, GO has also shown excellent applicability in energy conversion devices, such as protonexchange membrane fuel cells, methanol fuel cells, and water electrolyzers, which have also been discussed in this review. This review further summarizes the recent synthesis methodologies of GO and RGO along with their importance in electrochemical energy devices with allied challenges and future perspectives.

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Vanadium dioxide plates reduced graphene oxide as sulfur cathodes for efficient polysulfides trap in long-life lithium-sulfur batteries

Cited by 21 publications

References 44 publications

A Heterostructured Gel Polymer Electrolyte Modified by MoS₂ for High-Performance Lithium–Sulfur Batteries

A Heterostructured Gel Polymer Electrolyte Modified by MoS₂ for High-Performance Lithium–Sulfur Batteries

Recent Development in Novel Lithium-Sulfur Nanofiber Separators: A Review of the Latest Fabrication and Performance Optimizations

Electrochemical Energy Storage and Conversion Applications of Graphene Oxide: A Review

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Vanadium dioxide plates reduced graphene oxide as sulfur cathodes for efficient polysulfides trap in long-life lithium-sulfur batteries

Cited by 21 publications

References 44 publications

A Heterostructured Gel Polymer Electrolyte Modified by MoS2 for High-Performance Lithium–Sulfur Batteries

A Heterostructured Gel Polymer Electrolyte Modified by MoS2 for High-Performance Lithium–Sulfur Batteries

Recent Development in Novel Lithium-Sulfur Nanofiber Separators: A Review of the Latest Fabrication and Performance Optimizations

Electrochemical Energy Storage and Conversion Applications of Graphene Oxide: A Review

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Resources

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A Heterostructured Gel Polymer Electrolyte Modified by MoS₂ for High-Performance Lithium–Sulfur Batteries

A Heterostructured Gel Polymer Electrolyte Modified by MoS₂ for High-Performance Lithium–Sulfur Batteries