Elevating reactivity and cyclability of all-solid-state lithium-sulfur batteries by the combination of tellurium-doping and surface coating

Zhang, Wei; Zhang, Yunyang; Peng, Linfeng; Li, Shuping; Wang, Xumin; Cheng, Shijie; Xie, Jia

doi:10.1016/j.nanoen.2020.105083

Cited by 65 publications

(42 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, the nonporous sSC@A only shows a pair of cathodic/anodic peaks decreasing with cycles, revealing its sluggish electrochemical kinetics. [46] Moreover, the cathodic peak voltage and relevant onset voltage of SC@A are obviously larger than those of sSC@A, while the anodic peak voltage and relevant onset voltage of SC@A are apparently lower than those of sSC@A (Figure 3b), implying that SC@A exhibits much faster kinetics than sSC@A. [47] The much faster kinetics of SC@A than sSC@A is also confirmed with the Tafel curves (Figure 3c).…”

Section: Resultsmentioning

confidence: 57%

Mesoporous Yolk‐Shell Structured Organosulfur Nanotubes with Abundant Internal Joints for High‐Performance Lithium–Sulfur Batteries by Kinetics Acceleration

Wei

Liu

et al. 2021

Small

View full text Add to dashboard Cite

Although organosulfur compounds can protect lithium anodes, participate in the redox reaction, and suppress the shuttle effect, the sluggish electrochemical dynamics of their bulk structure and the notorious shuttle effect of covalent long‐chain sulfurs largely impede their actual applications. Herein, sulfurized carbon nanotube@aminophenol‐formaldehyde (SC@A) with covalently linked short‐chain sulfurs is firstly synthesized by in situ polymerization of aminophenol‐formaldehyde (AF) on the surface of carbon nanotubes (CNTs) followed by acetone etching and inverse sulfurization processes, forming mesoporous yolk‐shell organosulfur nanotubes with abundant internal joints between the yolk of CNTs and the shell of sulfurized AF for the first time. In situ Raman spectra, in situ XRD patterns, and ex situ XPS spectra verify that the covalent short‐chain sulfurs bring about a reversible solid‐solid conversion process of sulfur, thoroughly avoiding the shuttle effect. The mesoporous yolk‐shell structure with abundant internal joints can effectively accommodate the volume change, fully expose active sites and efficiently improve the transport of electrons and lithium ions, thus highly promoting the solid–solid electrochemical reaction kinetics. Therefore, the SC@A cathode exhibits a superior specific capacity of 841 mAh g−1 and a capacity decay of 0.06% per cycle within 500 cycles at a large current density of 5.0 C.

show abstract

Section: Resultsmentioning

confidence: 57%

Mesoporous Yolk‐Shell Structured Organosulfur Nanotubes with Abundant Internal Joints for High‐Performance Lithium–Sulfur Batteries by Kinetics Acceleration

Wei

Liu

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…66 Meanwhile, Te x S y composites were also synthesized and showed great potential as high-performance Li-S cathodes. 67 In short, each method mentioned above has its own advantages and disadvantages. Considering the specificity of various host materials, how to select the most suitable method to fabricate sulfur composites plays a vital role.…”

Section: Selenium (Se)/tellurium (Te)-sulfur Compositesmentioning

confidence: 99%

Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

Zhang

2022

SusMat

View full text Add to dashboard Cite

As one of the most promising candidates for next-generation energy storage systems, lithium-sulfur (Li-S) batteries have gained wide attention owing to their ultrahigh theoretical energy density and low cost. Nevertheless, their road to commercial application is still full of thorns due to the inherent sluggish redox kinetics and severe polysulfides shuttle. Incorporating sulfur cathodes with adsorbents/catalysts has been proposed to be an effective strategy to address the foregoing challenges, whereas the complexity of sulfur cathodes resulting from the intricate design parameters greatly influences the corresponding energy density, which has been frequently ignored. In this review, the recent progress in design strategies of advanced sulfur cathodes is summarized and the significance of compatible regulation among sulfur active materials, tailored hosts, and elaborate cathode configuration is clarified, aiming to bridge the gap between fundamental research and practical application of Li-S batteries. The representative strategies classified by sulfur encapsulation, host architecture, and cathode configuration are first highlighted to illustrate their synergetic contribution to the electrochemical performance improvement. Feasible integration principles are also proposed to guide the practical design of advanced sulfur cathodes. Finally, prospects and future directions are provided to realize high energy density and long-life Li-S batteries.

show abstract

“…Many related works have tried to map the phase diagram of Te x S y , such as Te 0.92 S 0.08 , Te 0.04 S 0.96 , Te-n-S (where n represents the mass ratio) ( Xu et al, 2018 ; Li et al, 2019a ; Li et al, 2019b ; Ge and Yin, 2019 ; Lee et al, 2019 ; Zhang et al, 2020 ). Sulfur incorporation leads to lattice distortion and d-spacing enlargement of Te phase, rendering the composited Te x S y with a fast transport of ions and electrons, as well as excellent structural stability during lithiation/delithiation processes ( Chen et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Advanced TexSy-C Nanocomposites for High-Performance Lithium Ion Batteries

et al. 2021

Front. Chem.

View full text Add to dashboard Cite

This study is dedicated to expand the family of lithium-tellurium sulfide batteries, which have been recognized as a promising choice for future energy storage systems. Herein, a novel electrochemical method has been applied to engineer micro-nano TexSy material, and it is found that TexSy phases combined with multi-walled carbon nanotubes endow the as-constructed lithium-ion batteries excellent cycling stability and high rate performance. In the process of material synthesis, the sulfur was successfully embedded into the tellurium matrix, which improved the overall capacity performance. TexSy was characterized and verified as a micro-nano-structured material with less Te and more S. Compared with the original pure Te particles, the capacity is greatly improved, and the volume expansion change is effectively inhibited. After the assembly of Li-TexSy battery, the stable electrical contact and rapid transport capacity of lithium ions, as well as significant electrochemical performance are verified.

show abstract

Elevating reactivity and cyclability of all-solid-state lithium-sulfur batteries by the combination of tellurium-doping and surface coating

Cited by 65 publications

References 55 publications

Mesoporous Yolk‐Shell Structured Organosulfur Nanotubes with Abundant Internal Joints for High‐Performance Lithium–Sulfur Batteries by Kinetics Acceleration

Mesoporous Yolk‐Shell Structured Organosulfur Nanotubes with Abundant Internal Joints for High‐Performance Lithium–Sulfur Batteries by Kinetics Acceleration

Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

Advanced TexSy-C Nanocomposites for High-Performance Lithium Ion Batteries

Contact Info

Product

Resources

About