MnO2-decorated graphene aerogel with dual-polymer interpenetrating network as an efficient hybrid host for Li-S batteries

Tan, Shunyuan; Yang, Zelin; Yuan, Huatang; Zhang, Jian; Yang, Yang; Liu, Hongtao

doi:10.1016/j.jallcom.2019.03.337

Cited by 24 publications

(10 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effectiveness of 3D graphene aerogel as a host material was presented in the work of Tan et al by implanting nano-MnO 2 particles . The host material provided electronic and ionic 3D pathways and improved kinetics, which resulted in excellent physical and chemical capabilities toward the sulfur capturing.…”

Section: Modificationmentioning

confidence: 99%

Recent Advances on Modification of Separator for Li/S Batteries

Batyrgali

Yerkinbekova

Tolganbek

et al. 2022

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Significant research efforts have been dedicated to progressing Li/S batteries owing to the active material’s superior capacity and abundancy. Yet, one of the major drawbacks of the Li/S battery relates to the separator part since it is a crucial component that directly influences its electrochemical performance. The reversible capacity, Coulombic efficiency, and cycling stability of Li/S batteries can all be increased by rationally constructing and improving commercially available separators. To date, various modifications on the separator surface have been proposed to enhance the electrochemical performance of Li/S batteries. Thus, this review mainly focuses on major problems of Li/S batteries and their resolving methods by advancing these separators. Enhancement of separators are categorized as physical and chemical based on modification technique types. In the physical modification section, different types of coatings using carbon, polymer, inorganic, and metal–organic framework (MOF) were comprehensively discussed. In contrast, relatively less work on chemical modification has been reported, yet a critical summary has been provided. The perspectives and challenges of separator modification for Li/S battery has been also proposed.

show abstract

Section: Modificationmentioning

confidence: 99%

Recent Advances on Modification of Separator for Li/S Batteries

Batyrgali

Yerkinbekova

Tolganbek

et al. 2022

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…To meet the ever-increasing safety and high-capacity storage requirements prompted by advanced energy storage technologies in the future, the low-cost lithium–sulfur (Li–S) battery, due to its ultrahigh theoretical specific capacity (1675 mAh g –1 ) and excellent energy density (2600 Wh kg –1 ), has been considered as one of the most developed power generation devices for high-density energy storage. − To reach the practical application standard in Li–S batteries, increasing the loading of active materials is essential. , However, Li–S battery cathodes have some inherent scientific problems. The conductivities of S 8 and the insoluble Li 2 S charging and discharging products are poor, seriously affecting the redox reaction kinetics and battery power performance. , The dissolution of soluble intermediate lithium polysulfides (LiPSs) (Li 2 S n , 4 ≤ n ≤ 8) in the ether-based electrolyte will cause a serious “shuttle effect”, resulting in irreversible loss of active material and low Coulomb efficiency. , Finally, after sulfur is converted into Li 2 S, a volume expansion of about 80% occurs, resulting in poor battery safety and low cycle stability .…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide-Coated Zinc–Cobalt Oxide Nanosheet Arrays with N-Doped Carbon Anchored on Carbon Cloths as Cathode Materials for High-Sulfur-Loading Li–S Batteries

Shan

Guo

Zou

et al. 2021

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

To meet practical application needs, high-massloading lithium−sulfur (Li−S) batteries are urgently needed for achieving good electrochemical performance. Here, unique threedimensional (3D) reduced graphene oxide (rGO)-coated ultrathin zinc−cobalt oxide composite N-doped carbon self-supporting stratified porous nanosheet arrays, anchored on flexible carbon cloths (CCs) (rGO-S/ZnCo 2 O 4 @NC/CCs), are designed and chosen as independent cathodes. A lithium−sulfur battery using rGO-S/ZnCo 2 O 4 @NC/CC as the cathode exhibits a high capacity of around 1377.8 mAh g −1 and retains an outstanding capacity of around 1006.3 mAh g −1 after 700 cycles at 0.1 C with a sulfur loading of 2.2 mg cm −2 . Moreover, even under a high sulfur load of 8.2 mg cm −2 , a superior capacity of 735.9 mAh g −1 can be achieved at 0.1 C. In this work, a special function and a 3D self-supporting stratified porous nanostructure with a conductive rGO coating have been designed, which reasonably alleviate the "shuttle effect" of high-load Li−S batteries through the "internal and external double repair" action.

show abstract

“…Recently, MnO 2 was proposed as a sulfur host in Li-S batteries. For instance, Liang et al [25] designed a polysulfide mediator δ-MnO 2 for Li-S batteries that displayed an initial capacity of ~1300 mA h g −1 at 0.05 C. At the same time, when the S content was 75%, it still had strong chemical adsorption performance. Chen et al [21] developed a hollow nitrogen-doped micropore-rich carbon (NMRC)@MnO 2 nanocomposite framework as the sulfur host for advanced Li-S batteries.…”

Section: Introductionmentioning

confidence: 99%

MnO2/rGO/CNTs Framework as a Sulfur Host for High-Performance Li-S Batteries

et al. 2020

View full text Add to dashboard Cite

Lithium-sulfur batteries are very promising next-generation energy storage batteries due to their high theoretical specific capacity. However, the shuttle effect of lithium-sulfur batteries is one of the important bottlenecks that limits its rapid development. Herein, physical and chemical dual adsorption of lithium polysulfides are achieved by designing a novel framework structure consisting of MnO2, reduced graphene oxide (rGO), and carbon nanotubes (CNTs). The framework-structure composite of MnO2/rGO/CNTs is prepared by a simple hydrothermal method. The framework exhibits a uniform and abundant mesoporous structure (concentrating in ~12 nm). MnO2 is an α phase structure and the α-MnO2 also has a significant effect on the adsorption of lithium polysulfides. The rGO and CNTs provide a good physical adsorption interaction and good electronic conductivity for the dissolved polysulfides. As a result, the MnO2/rGO/CNTs/S cathode delivered a high initial capacity of 1201 mAh g−1 at 0.2 C. The average capacities were 916 mAh g−1, 736 mAh g−1, and 547 mAh g−1 at the current densities of 0.5 C, 1 C, and 2 C, respectively. In addition, when tested at 0.5 C, the MnO2/rGO/CNTs/S exhibited a high initial capacity of 1010 mAh g−1 and achieved 780 mAh g−1 after 200 cycles, with a low capacity decay rate of 0.11% per cycle. This framework-structure composite provides a simple way to improve the electrochemical performance of Li-S batteries.

show abstract

MnO2-decorated graphene aerogel with dual-polymer interpenetrating network as an efficient hybrid host for Li-S batteries

Cited by 24 publications

References 47 publications

Recent Advances on Modification of Separator for Li/S Batteries

Recent Advances on Modification of Separator for Li/S Batteries

Reduced Graphene Oxide-Coated Zinc–Cobalt Oxide Nanosheet Arrays with N-Doped Carbon Anchored on Carbon Cloths as Cathode Materials for High-Sulfur-Loading Li–S Batteries

MnO2/rGO/CNTs Framework as a Sulfur Host for High-Performance Li-S Batteries

Contact Info

Product

Resources

About