Open Access
Nitrogen-Doped Mesoporous Carbon Promoted Chemical Adsorption of Sulfur and Fabrication of High-Areal-Capacity Sulfur Cathode with Exceptional Cycling Stability for Lithium-Sulfur Batteries
Jiangxuan Song,Terrence Xu,Mikhail L. Gordin,Donghai Wang +3 more
- Iss: 2, pp 182-182
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TLDR
In this article, a mesoporous nitrogen-doped carbon (MPNC)-sulfur nanocomposite is reported as a novel cathode for advanced Li-S batteries.Abstract:
As one important component of sulfur cathodes, the carbon host plays a key role in the electrochemical performance of lithium-sulfur (Li-S) batteries. In this paper, a mesoporous nitrogen-doped carbon (MPNC)-sulfur nanocomposite is reported as a novel cathode for advanced Li-S batteries. The nitrogen doping in the MPNC material can effectively promote chemical adsorption between sulfur atoms and oxygen functional groups on the carbon, as verifi ed by X-ray absorption near edge structure spectroscopy, and the mechanism by which nitrogen enables the behavior is further revealed by density functional theory calculations. Based on the advantages of the porous structure and nitrogen doping, the MPNC-sulfur cathodes show excellent cycling stability (95% retention within 100 cycles) at a high current density of 0.7 mAh cm −2 with a high sulfur loading (4.2 mg S cm −2 ) and a sulfur content (70 wt%). A high areal capacity (≈3.3 mAh cm −2 ) is demonstrated by using the novel cathode, which is crucial for the practical application of Li-S batteries. It is believed that the important role of nitrogen doping promoted chemical adsorption can be extended for development of other high performance carbon-sulfur composite cathodes for Li-S batteries.read more
Citations
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Promise and reality of post-lithium-ion batteries with high energy densities
Jang Wook Choi,Doron Aurbach +1 more
TL;DR: A review of post-lithium-ion batteries is presented in this paper with a focus on their operating principles, advantages and the challenges that they face, and the volumetric energy density of each battery is examined using a commercial pouch-cell configuration.
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Designing high-energy lithium–sulfur batteries
TL;DR: This review aims to summarize major developments in the field of lithium-sulfur batteries, starting from an overview of their electrochemistry, technical challenges and potential solutions, along with some theoretical calculation results to advance the understanding of the material interactions involved.
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Advances in lithium-sulfur batteries based on multifunctional cathodes and electrolytes
TL;DR: In this article, a review of recent developments in tackling the dissolution of polysulfides, a fundamental problem in Li-S batteries, focusing on both experimental and computational approaches to tailor the chemical interactions between the sulfur host materials and poly sulfides is presented.
Journal ArticleDOI
Review on High-Loading and High-Energy Lithium–Sulfur Batteries
TL;DR: In this paper, the authors highlight the recent progress in high-sulfur-loading Li-S batteries enabled by hierarchical design principles at multiscale, particularly, basic insights into the interfacial reactions, strategies for mesoscale assembly, unique architectures, and configurational innovation in the cathode, anode, and separator.
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More Reliable Lithium-Sulfur Batteries: Status, Solutions and Prospects.
TL;DR: The Li-S battery is a complex device and its useful energy density is determined by a number of design parameters, most of which are often ignored, leading to the failure to meet commercial requirements, so how to pave the way for reliableLi-S batteries is discussed.
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Promise and reality of post-lithium-ion batteries with high energy densities
Jang Wook Choi,Doron Aurbach +1 more
TL;DR: A review of post-lithium-ion batteries is presented in this paper with a focus on their operating principles, advantages and the challenges that they face, and the volumetric energy density of each battery is examined using a commercial pouch-cell configuration.