Clew-like N-doped multiwalled carbon nanotube aggregates derived from metal-organic complexes for lithium-sulfur batteries

Zuo, Pengjian; Zhang, Han; He, Meizi; Li, Qin; Ma, Yulin; Du, Chunyu; Cheng, Xinqun; Huo, Hua; Gao, Yunzhi; Yin, Geping

doi:10.1016/j.carbon.2017.07.017

Cited by 41 publications

(11 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The result testifies the presence of micropores in the HNCM . The hierarchically porous structure can be attributed to the interconnectivity of CNTs, and the inner and external pores . The specific surface area (SSA) and pore volume (PV) of HNCM after HCl treatment are significantly higher than that of HNCM before treatment (Table S1, Supporting Information).…”

Section: Resultsmentioning

confidence: 84%

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage

Wang

Yan

Zhang

et al. 2019

Adv Funct Materials

View full text Add to dashboard Cite

Herein, high-content N-doped carbon nanotube (CNT) microspheres (HNCMs) are successfully synthesized through simple spray drying and one-step pyrolysis. HNCM possesses a hierarchically porous architecture and high-content N-doping. In particular, HNCM800 (HNCM pyrolyzed at 800 °C) shows high nitrogen content of 12.43 at%. The porous structure derived from well-interconnected CNTs not only offers a highly conductive network and blocks diffusion of soluble lithium polysulfides (LiPSs) in physical adsorption, but also allows sufficient sulfur infiltration. The incorporation of N-rich CNTs provides strong chemical immobilization for LiPSs. As a sulfur host for lithium-sulfur batteries, good rate capability and high cycling stability is achieved for HNCM/S cathodes. Particularly, the HNCM800/S cathode delivers a high capacity of 804 mA h g −1 at 0.5 C after 1000 cycles corresponding to low fading rate (FR) of only 0.011% per cycle. Remarkably, the cathode with high sulfur loading of 6 mg cm −2 still maintains high cyclic stability (capacity of 555 mA h g −1 after 1000 cycles, FR 0.038%). Additionally, CNT/Co 3 O 4 microspheres are obtained by the oxidation of CNTs/Co in the air. The as-prepared CNT/Co 3 O 4 microspheres are employed as an anode for lithium-ion batteries and present excellent cycling performance.

show abstract

Section: Resultsmentioning

confidence: 84%

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage

Wang

Yan

Zhang

et al. 2019

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…To date, various sulfur host materials, such as porous carbon matrices, , hollow structures, − carbon fibers, , and graphene, , have been used to enhance the electrochemical property of Li–S batteries. These strategies mainly focus on increasing sulfur utilization by physically trapping sulfur and polysulfide species in mesoporous structures of conductive and carbonaceous materials.…”

mentioning

confidence: 99%

“…5 In addition, the well-known "shuttle effect" phenomenon for soluble polysulfides (Li 2 S x , 4 < x ≤ 8) can result in low Coulombic efficiency, serious anode corrosion, and hence fast capacity decay. 6 To date, various sulfur host materials, such as porous carbon matrices, 7,8 hollow structures, 9−13 carbon fibers, 14,15 and graphene, 16,17 have been used to enhance the electrochemical property of Li−S batteries. These strategies mainly focus on increasing sulfur utilization by physically trapping sulfur and polysulfide species in mesoporous structures of conductive and carbonaceous materials.…”

mentioning

confidence: 99%

Triple-Layered Carbon-SiO₂ Composite Membrane for High Energy Density and Long Cycling Li–S Batteries

Kou

Liu

et al. 2019

ACS Nano

View full text Add to dashboard Cite

Here we report a highly scalable yet flexible triple-layer structured porous C/SiO2 membrane via a facile phase inversion method for advancing Li–sulfur battery technology. As a multifunctional current-collector-free cathode, the conductive dense layer of the C/SiO2 membrane offers hierarchical macropores as an ideal sulfur host to alleviate the volume expansion of sulfur species and facilitate ion/electrolyte transport for fast kinetics, as well as spongelike pores to enable high sulfur loading. The triple-layer structured membrane cathode enables the filling of most sulfur species in the macropores and additional loading of a thin sulfur slurry on the membrane surface, which facilitates ion/electrolyte transport with faster kinetics than the conventional S/C slurry-based cathode. Furthermore, density functional theory simulations and visual adsorption measurements confirm the critical role of the doped SiO2 nanoparticles (∼10 nm) in the asymmetric C membrane in suppressing the shuttle effect of polysulfides via chemisorption and electrocatalysis. The rationally designed C/SiO2 membrane cathodes demonstrate long-term cycling stability of 300 cycles at a high sulfur loading of 2.8 mg cm–2 with a sulfur content of ∼75%. This scalable yet flexible self-supporting cathode design presents a useful strategy for realizing practical applications of high-performance Li–S batteries.

show abstract

“…Besides the pyrolysis of the mixture of catalyst precursor, carbon source, and N source, transition metal containing metal‐organic frameworks (MOFs), zeolitic imidazolate frameworks (ZIFs), and Prussian blue can be employed to prepare N‐doped CNTs, which not only achieved the in situ N doping, but also constructed 3D interconnected morphology. [ 75 ] Yin's group [ 76 ] prepared N‐doped CNTs with 3D clew‐like structure (3DNC) through the direct pyrolysis of Ni‐containing MOFs. First, Ni‐methylimidazole (Ni‐MeIM) MOFs were obtained by wet chemistry method.…”

Section: Non‐metal Heteroatom Doped Materials As the Sulfur Hostsmentioning

confidence: 99%

A Review of Heteroatom Doped Materials for Advanced Lithium–Sulfur Batteries

Wang

Han

2021

Adv Funct Materials

161

View full text Add to dashboard Cite

High theoretical capacity and high energy density make lithium sulfur (Li‐S) batteries a competitive candidate for next‐generation energy storage systems. However, achieving the practical application of Li‐S batteries is still a huge challenge due to some inevitable obstacles. Poor conductivity of active sulfur, large volume expansion of cathode, and severe shuttle effect of lithium polysulfides (LiPSs) greatly limit the capacity of cells and lead to unsatisfied cycle performance. Therefore, various sulfur host materials have been proposed and investigated, which should possess good conductivity, porous structure, and strong immobilization capability for LiPSs. Unfortunately, it is incompetent to cover all the advantages mentioned above for pristine materials. Heteroatom doping fundamentally manipulates the electronic structure and polarity of materials, leading to some unprecedented properties, and subsequent enhancement in electrochemical performance. This review systematically summarizes the recent progress of heteroatom (metal single atom and non‐metal atom) doping in various materials including carbon materials, graphitic carbon nitride (g‐C3N4), and metal compounds as the ideal sulfur host. Furthermore, the relationship between the unique features of sulfur host materials originated from heteroatom doping and enhanced performance of cells is comprehensively discussed.

show abstract

Clew-like N-doped multiwalled carbon nanotube aggregates derived from metal-organic complexes for lithium-sulfur batteries

Cited by 41 publications

References 48 publications

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage

Triple-Layered Carbon-SiO₂ Composite Membrane for High Energy Density and Long Cycling Li–S Batteries

A Review of Heteroatom Doped Materials for Advanced Lithium–Sulfur Batteries

Contact Info

Product

Resources

About

Clew-like N-doped multiwalled carbon nanotube aggregates derived from metal-organic complexes for lithium-sulfur batteries

Cited by 41 publications

References 48 publications

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage

Facile Preparation of High‐Content N‐Doped CNT Microspheres for High‐Performance Lithium Storage

Triple-Layered Carbon-SiO2 Composite Membrane for High Energy Density and Long Cycling Li–S Batteries

A Review of Heteroatom Doped Materials for Advanced Lithium–Sulfur Batteries

Contact Info

Product

Resources

About

Triple-Layered Carbon-SiO₂ Composite Membrane for High Energy Density and Long Cycling Li–S Batteries