The Structural and Electronic Engineering of Molybdenum Disulfide Nanosheets as Carbon‐Free Sulfur Hosts for Boosting Energy Density and Cycling Life of Lithium–Sulfur Batteries

Shen, Wenxiang; Li, Pengyue; Zhang, Naiqing; Han, Enshan; Guo-xian, GU; Wang, Ruihu; Li, Xiaoju

doi:10.1002/smll.202304122

Cited by 4 publications

(1 citation statement)

References 51 publications

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“…Metal oxides are considered as highly promising candidate anode materials for lithium-ion batteries (LIBs) due to their high theoretical capacity, high abundance, and environmental friendliness. − However, the cycling stability is poor due to significant lattice expansion during lithiation/delithiation processes. − Moreover, the higher potential barrier suppresses the Li + diffusion ability and reduces the reaction kinetics. It severely limits the development of high energy/power density LIBs. − Therefore, it is necessary to find an effective way to overcome these problems.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Regulation of Built-In Electric Field and Interface Effect to Enhance the Reaction Kinetics and Stability of Lithium-Ion Batteries

Chen,

Wu,

Zhang

et al. 2024

ACS Sustainable Chem. Eng.

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The synergistic regulation of the built-in electric field and interface effect is applied in this work to solve problems of poor rate performance and short cycle life caused by low reaction kinetics and lattice expansion. Constructing heterostructures is considered an effective way to change the electric field distribution and generate rich interfaces. Fe 2 O 3 /MoO 2 /Fe 2 (MoO 4 ) 3 anode materials with heterostructures have been successfully synthesized by electrospinning combined with subsequent heat treatment. The sample obtained at 600 °C (FMO-600) exhibits excellent cyclic stability and rate performance. The capacity retention rate of the FMO-600 electrode is as high as 79.75% (986.6 mAh•g −1 after 450 cycles at 1 A•g −1 ), and the average specific capacity barely drops by 0.045% per cycle. It is important to note that even at a high current density of 5 A•g −1 , the FMO-600 electrode still exhibits an impressive specific capacity (615.6 mAh•g −1 ). Density functional theory (DFT) computations theoretically prove the formation of built-in electric fields. The higher Li + diffusion coefficient and lower electron transfer resistance of the FMO-600 electrode enhance the reaction kinetics during discharge/charge processes, while the interface effect contributes to outstanding cycling stability. This work sheds light on the rational design of high energy/power density lithium-ion battery anode materials.

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Section: Introductionmentioning

confidence: 99%

Synergistic Regulation of Built-In Electric Field and Interface Effect to Enhance the Reaction Kinetics and Stability of Lithium-Ion Batteries

Chen,

Wu,

Zhang

et al. 2024

ACS Sustainable Chem. Eng.

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Recent Advances in Non‐Carbon Dense Sulfur Cathodes for Lithium–Sulfur Battery with High Energy Density

Phuong Nguyen,

Lee

2024

ChemElectroChem

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The seemingly advantageous features of carbon‐based materials, such as large pore volume and lightweight structure, could actually lead to low tap density for the sulfur cathode and excessive electrolyte consumption, potentially significantly decreasing the energy density of lithium–sulfur battery. Recently, non‐carbon‐based materials composed of inorganic matter have emerged as promising candidates for creating dense sulfur cathodes and reducing electrolyte intake. Additionally, inorganic matter exhibits strong interactions with lithium polysulfides, which can address the intrinsic problems of the severe shuttling effect and poor reaction kinetics. In this review, we first discuss the relationship between the tap density of the sulfur cathode and the energy density of lithium–sulfur battery. Subsequently, we systematically summarize recent advances in non‐carbon‐based materials as sulfur hosts. Finally, we propose future research directions and perspectives for sulfur host materials to inspire the realization of practical lithium–sulfur battery with high energy density.

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Engineering Strategies for Suppressing the Shuttle Effect in Lithium–Sulfur Batteries

Li,

Gao,

Pan

et al. 2023

Nano-Micro Lett.

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Lithium–sulfur (Li–S) batteries are supposed to be one of the most potential next-generation batteries owing to their high theoretical capacity and low cost. Nevertheless, the shuttle effect of firm multi-step two-electron reaction between sulfur and lithium in liquid electrolyte makes the capacity much smaller than the theoretical value. Many methods were proposed for inhibiting the shuttle effect of polysulfide, improving corresponding redox kinetics and enhancing the integral performance of Li–S batteries. Here, we will comprehensively and systematically summarize the strategies for inhibiting the shuttle effect from all components of Li–S batteries. First, the electrochemical principles/mechanism and origin of the shuttle effect are described in detail. Moreover, the efficient strategies, including boosting the sulfur conversion rate of sulfur, confining sulfur or lithium polysulfides (LPS) within cathode host, confining LPS in the shield layer, and preventing LPS from contacting the anode, will be discussed to suppress the shuttle effect. Then, recent advances in inhibition of shuttle effect in cathode, electrolyte, separator, and anode with the aforementioned strategies have been summarized to direct the further design of efficient materials for Li–S batteries. Finally, we present prospects for inhibition of the LPS shuttle and potential development directions in Li–S batteries.

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The Structural and Electronic Engineering of Molybdenum Disulfide Nanosheets as Carbon‐Free Sulfur Hosts for Boosting Energy Density and Cycling Life of Lithium–Sulfur Batteries

Cited by 4 publications

References 51 publications

Synergistic Regulation of Built-In Electric Field and Interface Effect to Enhance the Reaction Kinetics and Stability of Lithium-Ion Batteries

Synergistic Regulation of Built-In Electric Field and Interface Effect to Enhance the Reaction Kinetics and Stability of Lithium-Ion Batteries

Recent Advances in Non‐Carbon Dense Sulfur Cathodes for Lithium–Sulfur Battery with High Energy Density

Engineering Strategies for Suppressing the Shuttle Effect in Lithium–Sulfur Batteries

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