Using a large number of biomass wastes, such as peanut shells, orange peels, and leaves, the researchers have been able to produce carbon materials with hierarchical pore
3 天之前· The mesopores and macropores within porous carbon materials help increase the surface for the depostion of solid-state products, reduce the Li 2 S film thickness, enhance electron and mass transport, and accelerate the reaction kinetics. However, an excessive amount of mesopores and macropores can lead to increased electrolyte consumption, particularly at
For high-energy lithium-sulfur batteries, a dense electrode with low porosity is desired to minimize electrolyte intake, parasitic weight, and cost. Here we report the profound impact on the...
With their porous structures and facile synthesis, metal-organic frameworks (MOFs) are tunable platforms for understanding polysulfide redox and can serve as effective
The performance of the metallic lithium anode is one of the major factors that affect the cycle stability of a lithium–sulfur battery. The protection of the lithium anode is extremely essential, especially for lithium–sulfur full-cells. Here, a porous Al2O3 layer is fabricated on the surface of a metallic li 2015 Journal of Materials Chemistry A Hot Papers
With their porous structures and facile synthesis, metal-organic frameworks (MOFs) are tunable platforms for understanding polysulfide redox and can serve as effective sulfur hosts for...
Lithium-sulfur batteries have great potential for application in next generation energy storage. However, the further development of lithium-sulfur batteries is hindered by various problems, especially three main issues: poor electronic conductivity of the active materials, the severe shuttle effect of polysulfide, and sluggish kinetics of polysulfide
This work proposed an electrochemical active porous architecture (EPA) interlayer to regulate the migration of ions and electrons, and highlights the importance of
For high-energy lithium-sulfur batteries, a dense electrode with low porosity is desired to minimize electrolyte intake, parasitic weight, and cost. Here we report the profound
In this review, different synthetic methods of porous carbon hosts and their corresponding integration into carbon–sulfur cathodes are summarized. The pore formation mechanism of
To realize a low-carbon economy and sustainable energy supply, the development of energy storage devices has aroused intensive attention. Lithium-sulfur (Li-S) batteries are regarded as one of the most promising next-generation battery devices because of their remarkable theoretical energy density, cost-effectiveness, and environmental benignity.
In this review, different synthetic methods of porous carbon hosts and their corresponding integration into carbon-sulfur cathodes are summarized. The pore formation mechanism of porous carbon hosts is also addressed. The pore size effect on electrochemical performance is highlighted and compared.
3 天之前· The mesopores and macropores within porous carbon materials help increase the surface for the depostion of solid-state products, reduce the Li 2 S film thickness, enhance
Lithium-sulfur batteries (LSBs) are one of the most promising electrochemical energy storage systems because of their great advantages in theoretical energy density. However, poor conductivities of sulfur and discharge products Li2S2 and Li2S, volume expansion during charge/discharge, and the shuttle effect of lithium polysulfides (LiPSs) severely limit the
This work proposed an electrochemical active porous architecture (EPA) interlayer to regulate the migration of ions and electrons, and highlights the importance of porous structure design and chemical modification of functional interlayer for
Lithium–sulfur (Li–S) batteries are one of the most promising next generation battery systems owing to their high energy density and low cost, but they suffer from the low conductivity of sulfur, polysulfide shuttling and lithium dendrite
The most promising energy storage devices are lithium-sulfur batteries (LSBs), which offer a high theoretical energy density that is five times greater than that of lithium-ion batteries. However, there are still significant
Fu, A. et al. Recent advances in hollow porous carbon materials for lithium-sulfur batteries. Small 15, e1804786 (2019). Article Google Scholar Ji, X., Lee, K. T. & Nazar,
Fu, A. et al. Recent advances in hollow porous carbon materials for lithium-sulfur batteries. Small 15, e1804786 (2019). Article Google Scholar Ji, X., Lee, K. T. & Nazar, L. F. A highly ordered
In this paper, natural biomass loofah is used as a precursor to construct porous carbon materials for lithium-sulfur battery separators. After Zn element doping and calcination of loofah, the obtained porous carbon (Zn@LSC) with high specific surface area is utilized as the versatile separator for lithium-sulfur battery. Leveraging the
In this paper, natural biomass loofah is used as a precursor to construct porous carbon materials for lithium-sulfur battery separators. After Zn element doping and calcination
With their porous structures and facile synthesis, metal–organic frameworks (MOFs) are tunable platforms for understanding polysulfide redox and can serve as effective sulfur hosts for lithium–sulfur batteries. This feature article describes our design strategies to tailor MOF properties such as polysulfide affinity, ionic
The biomass-derived nanostructured porous carbons (BDNPCs) are the most promising sulfur hosts and interlayers in rechargeable lithium-sulfur (Li-S) batteries. In this article, a comprehensive review is provided in the synthesis of nanostructured porous carbon materials for high-performance rechargeable Li-S batteries by using biomass. The performances of the
In this review, different synthetic methods of porous carbon hosts and their corresponding integration into carbon–sulfur cathodes are summarized. The pore formation mechanism of porous carbon hosts is also addressed. The pore size effect on electrochemical performance is highlighted and compared.
The most important challenge in the practical development of lithium–sulfur (Li–S) batteries is finding suitable cathode materials. Due to the complexity of this system, various factors have been investigated during the last years, but still, the roadmap for designing the best cathode candidates is not vivid.
In this review, different synthetic methods of porous carbon hosts and their corresponding integration into carbon-sulfur cathodes are summarized. The pore formation
Herein, an intrinsic porous light biomass is utilized as an environmentally friendly precursor to prepare high value-added porous carbon as the interlayer material for advanced lithium sulfur (Li–S) batteries. Various material characterization methods are utilized to investigate the obtained porous carbon and found that it exhibits three-dimensional interconnected porous
2 Organosulfur as Cathode Materials for Lithium–Sulfur Batteries. Cathode materials are crucial for LSBs. The energy density of LSBs mainly depends on the capacity of sulfur cathodes, when lithium metal anode is used. The efficiency and cyclic stability of LSBs mainly depend on whether the sulfur cathodes can successfully suppress the shuttle
Using a large number of biomass wastes, such as peanut shells, orange peels, and leaves, the researchers have been able to produce carbon materials with hierarchical pore structure and obtain very high specific surface area, which can provide loading space for active materials in Li–S batteries and significantly improve the battery capacity.
For high-energy lithium-sulfur batteries, a dense electrode with low porosity is desired to minimize electrolyte intake, parasitic weight, and cost. Here the authors show the impact of porosity on the performance of lithium-sulfur batteries and reveal the mechanism through analytical modeling.
Lithium–sulfur batteries (LSBs) are considered to be one of the most promising alternatives to the current lithium-ion batteries (LIBs) to meet the increasing demand for energy storage owing to their high energy density, natural abundance, low cost, and environmental friendliness.
The obtained material possessed a 3D hierarchical porous structure with the high specific surface area (535.352 m 2/g), as well as good pore size distribution. The carbon and sulfur were compounded by a stem-melting technology as cathode materials of Li–S batteries.
Nature Communications 14, Article number: 291 (2023) Cite this article The slow redox kinetics of polysulfides and the difficulties in decomposition of Li 2 S during the charge and discharge processes are two serious obstacles to the practical application of lithium-sulfur batteries.
For high-energy lithium-sulfur batteries, a dense electrode with low porosity is desired to minimize electrolyte intake, parasitic weight, and cost. Here we report the profound impact on the discharge polarization, reversible capacity, and cell cycling life of lithium-sulfur batteries by decreasing cathode porosities from 70 to 40%.
Lithium-sulfur (Li-S) batteries are considered as one of the most promising next-generation energy-storage systems due to its high theoretical capacity, abundant resources and environmental friendliness 1.
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