Rational design of a mesoporous silica-based cathode for efficient trapping of polysulfides in Li–S batteries

Chen, Chao; Xu, Huifang; Zhang, Bingkai; Jiang, Qingbin; Zhang, Yaping; Li, Lei; Lin, Zhan

doi:10.1039/c9cc08242e

Cited by 16 publications

(8 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 However, the "shuttle effect" has not really been well overcome despite great progress has been achieved. So far, numerous studies have been conducted to tackle the "shuttle effect", and most of the efforts have been directed toward the design and fabrication of advanced materials for electrodes, 8,9 separator, 10 electrolyte, 11 and binder. 12 Separator separates the electrodes to avoid the internal short, while allows for ion transportation.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Cobalt–Nitrogen–Carbon Catalyst-Based Multifunctional Interlayer for Enhanced Li–S Battery Performance

Zhang

Chen

et al. 2022

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

The lithium−sulfur battery is considered to be a prospective candidate for the next-generation energy storage system. The practical application of the lithium−sulfur battery is impeded by several existing challenges, especially the lithium polysulfide (LiPS) "shuttle effect," which leads to low utilization of sulfur and poor cycle life. To alleviate the "shuttle effect", herein, we fabricate a nanoporous metal−nitrogen−carbon catalyst, that is, Co−N−C, combined with graphene (G) as a multifunctional separator coating layer. The Co−N−C/G interlayer exhibits several merits to improve the battery performance, including (1) nanoporous structure that facilitates ionic transport, (2) abundant Co active sites and polar nitrogen-rich carbon surface that can adsorb and immobilize LiPSs, (3) highly dispersed Co sites that are able to accelerate the sulfur redox reaction kinetics, and (4) excellent electrical conductivity for further sulphur utilization. The Co−N−C/G-coated separator endows the Li−S battery with excellent cyclic performance and rate capability. This study proposes a guidance to construct functional separators for enhanced lithium− sulfur battery performance.

show abstract

Section: Introductionmentioning

confidence: 99%

Nanoporous Cobalt–Nitrogen–Carbon Catalyst-Based Multifunctional Interlayer for Enhanced Li–S Battery Performance

Zhang

Chen

et al. 2022

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to test the adsorption capability of MA for polysulfides, visualized polysulfide adsorption experiment was conducted. As can be seen from Figure a, the bright yellow pristine Li 2 S 6 solution changed to colorless after MA soaking for 1 h, indicating the adsorption of Li 2 S 6 by the MA material . To gain further understanding of polysulfide adsorption by MA, UV–vis absorption measurement was conducted for the Li 2 S 6 solution before and after MA soaking, and XPS analysis was performed on the MA sample before and after polysulfide adsorption.…”

Section: Resultsmentioning

confidence: 99%

“…As can be seen from Figure 2a, the bright yellow pristine Li 2 S 6 solution changed to colorless after MA soaking for 1 h, indicating the adsorption of Li 2 S 6 by the MA material. 44 To gain further understanding of polysulfide adsorption by MA, UV−vis absorption measurement was conducted for the Li 2 S 6 solution before and after MA soaking, and XPS analysis was performed on the MA sample before and after polysulfide adsorption. As shown in Figure 2a, a typical absorption peak for Li 2 S 6 is located at ca.…”

Section: ■ Materials Characterizationmentioning

confidence: 99%

Enhanced Li–S Battery Performance Boosted by a Large Surface Area Mesoporous Alumina-Based Interlayer

Lin

Lei

et al. 2022

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

Owing to high theoretical energy density (2600 W h kg −1 ), a lithium−sulfur (Li−S) battery is considered as one of the most promising next-generation energy storage systems. The "shuttle effect" of soluble polysulfides brings a series of negative problems and seriously hinders its practical application. In this work, a mesoporous alumina (MA) with a large surface area (598 m 2 g −1 ) was combined with graphene (G) to construct a functional interlayer for separator coating in a Li−S battery to suppress the "shuttle effect". As demonstrated by DFT calculation and experimental investigation, the mesoporous structure and the large surface area of MA are beneficial to provide abundant exposed adsorption sites for polysulfides capture and meanwhile facilitate the migration of polysulfides to the conductive substrate surface for the electrochemical reaction conversion. The strong interaction between polysulfides and MA can reduce energy barriers of electrochemical polysulfide intermediate conversions, leading to enhanced sulfur redox reaction kinetics. The MA@G interlayer enables outstanding Li−S battery performance including large initial discharge capacity (1414 mA h g −1 at 0.5 C), good cycling stability (808 mA h g −1 at 0.5 C after 100 cycles), and rate performance (initial discharge capacity 1056 and 636 mA h g −1 after 300 cycles at 2 C). This work provides guidance for future design of functional separators for high-performance Li−S batteries.

show abstract

“…The utilization of SiO 2 as a cathode catalytic material for LSBs has already been put forward thanks to its low cost, wide source, and sturdy interaction between positively charged SiO 2 and negatively charged polysuldes. 246 More importantly, SiO 2 is conrmed to be a lithiophilic material, which could act as the seeds to control the deposition of lithium 247,248 Jin et al 249 fabricated a rice husk-derived carbon (RC) to optimize both the Li metal anode and sulfur cathode (Fig. 16a, c, and 16d).…”

Section: Non-metal Compound Modied Bdc-based Hostsmentioning

confidence: 99%

Renewable biomass-derived carbon-based hosts for lithium–sulfur batteries

Zhao

Chen

et al. 2022

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

Rational design of a mesoporous silica-based cathode for efficient trapping of polysulfides in Li–S batteries

Abstract: We develop a mesoporous silica-based cathode for efficient trapping of lithium polysulfides. This cathode consists of a mesoporous silica (HMS), highly dispersed NiO nanoparticles embedded in the silica structure and a conductive polymer prepared by in situ polymerization.

Cited by 16 publications

References 25 publications

Nanoporous Cobalt–Nitrogen–Carbon Catalyst-Based Multifunctional Interlayer for Enhanced Li–S Battery Performance

Nanoporous Cobalt–Nitrogen–Carbon Catalyst-Based Multifunctional Interlayer for Enhanced Li–S Battery Performance

Enhanced Li–S Battery Performance Boosted by a Large Surface Area Mesoporous Alumina-Based Interlayer

Renewable biomass-derived carbon-based hosts for lithium–sulfur batteries

Contact Info

Product

Resources

About