Bamboo-like Co3O4 nanofiber as host materials for enhanced lithium-sulfur battery performance

Chen, Yinxia; Ji, Xianbing

doi:10.1016/j.jallcom.2018.11.037

Cited by 36 publications

(13 citation statements)

References 26 publications

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“…[202,203] Using cobaltbased oxides as sulfur hosts has also been reported. [204][205][206] Derived from ZIF-67 crystals, Xu et al fabricated a nitrogendoped Co 3 O 4 embedded in nitrogen-doped carbon polyhedrons via simple pyrolysis. With further graphene coating, a nanododecahedral composite was achieved (N-Co 3 O 4 @N-C/rGO).…”

Section: Cobalt-based Oxidesmentioning

confidence: 99%

Host Materials Anchoring Polysulfides in Li–S Batteries Reviewed

Zhou

Danilov

Eichel

et al. 2020

Advanced Energy Materials

340

192

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TU/e), the Netherlands. Currently, he is conducting his research at Forschungszentrum Jülich (Germany). His research interests focus on the design and development of effective strategies for high-performance Li-S batteries. Dmitri L. Danilov, Ph.D., has a background in physics and mathematics and obtained his M.Sc. at the Saint-Petersburg University in 1993. In 2003, he got Ph.D. degree from the University of Tilburg.In 2002, he joined Eurandom institute in Eindhoven University of Technology, being involved in various national and international research projects. His current research interests include mathematical modeling of complex electrochemical systems, including Li-ion and NiMH batteries, ageing and degradation processes, thin-film batteries, and advanced characterization methods. Starting 2017, he joined IEK-9 in the Forschungszentrum Jülich.

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Section: Cobalt-based Oxidesmentioning

confidence: 99%

Host Materials Anchoring Polysulfides in Li–S Batteries Reviewed

Zhou

Danilov

Eichel

et al. 2020

Advanced Energy Materials

340

192

View full text Add to dashboard Cite

show abstract

“…2 shows the XRD patterns of ZIF-67 and Co/ NPC. Comparing the pattern with the XRD pattern of ZIF-67 in the literature [14], it is found that the position and intensity of the diffraction peaks of the prepared sample are basically the same as those of ZIF-67. The characteristic peaks of ZIF-67 are in one-toone correspondence, so the preparation of ZIF-67 is successful.…”

Section: Resultsmentioning

confidence: 75%

Embedding Cobalt Into ZIF-67 to Obtain Cobalt-Nanoporous Carbon Composites as Electrode Materials for Lithium ion Battery

Zheng

Yin

Guo

et al. 2021

J. Electrochem. Sci. Technol

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Lithium ion batteries (LIBs) is a kind of rechargeable secondary battery, developed from lithium battery, lithium ions move between the positive and negative electrodes to realize the charging and discharging of external circuits. Zeolitic imidazolate frameworks (ZIFs) are porous crystalline materials in which organic imidazole esters are cross-linked to transition metals to form a framework structure. In this article, ZIF-67 is used as a sacrificial template to prepare nano porous carbon (NPC) coated cobalt nanoparticles. The final product Co/NPC composites with complete structure, regular morphology and uniform size were obtained by this method. The conductive network of cobalt and nitrogen doped carbon can shorten the lithium ion transport path and present high conductivity. In addition, amorphous carbon has more pores that can be fully in contact with the electrolyte during charging and discharging. At the same time, it also reduces the volume expansion during the cycle and slows down the rate of capacity attenuation caused by structure collapse. Co/NPC composites first discharge specific capacity up to 3115 mA h/g, under the current density of 200 mA/g, circular 200 reversible capacity as high as 751.1 mA h/g, and the excellent rate and resistance performance. The experimental results show that the Co/NPC composite material improves the electrical conductivity and electrochemical properties of the electrode. The cobalt based ZIF-67 as the precursor has opened the way for the design of highly performance electrodes for energy storage and electrochemical catalysis.

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“…Essentially, the bamboo-like Co 3 O 4 nanofibers are able to deliver a high initial specific discharge capacity of 915 mA h g −1 and retain a capacity of 726 mA h g −1 after 200 cycles at a current density of 0.5 C and sulfur loading of around 1.3 mg cm −2 . [227] The "Goldilocks" principle was proposed to divide metal oxides into three classes in terms of their redox potential versus Li/Li + (Figure 14e). The thiosulfate formation requires redox potential between 2.4 V < E o ≤ 3.05 V, which is just above the redox voltage of soluble polysulfides.…”

Section: Metal Oxidementioning

confidence: 99%

Lithium–Sulfur Battery Cathode Design: Tailoring Metal‐Based Nanostructures for Robust Polysulfide Adsorption and Catalytic Conversion

2021

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portable electronic devices such as laptops and mobile phones. However, with the increasing demand for clean energy and portable electronics, the energy densities powered by the LIB (≈300 mAh g −1 ) are beginning to reach the threshold limit and thus, leading to a need for an alternate environmentally friendly and more economical energy storage technology with higher energy densities. [1] One of the most promising candidates for the LIB replacement is the lithium-sulfur (Li-S) battery, which utilizes the redox reaction between sulfur and lithium. Compared to LIB and other metal-sulfur batteries (Figure 1a), Li-S batteries are profiled as a viable energy storage technology stemming from their high specific energy capacity of 1675 mAh g −1 and superior energy density of around 2670 Wh kg −1 . [1a-d,2] The elemental sulfur, which is used as the cathode material, also has a multitude of auspicious properties such as its inexpensiveness, environmentally friendliness, abundancy and non-toxicity. [2d,3] In addition, another emerging battery system is the metal-air battery, which is a half-open system that utilize oxygen from ambient air as the active cathode material. Thus, Li-S batteries are comparatively safer due to their enclosed system. Apart from that, the influence of CO 2 , H 2 O, and N 2 in ambient air can lead to chemical instability in metal-air batteries. [4] Taking Li-air batteries as an example, the presence of CO 2 leads to the formation of Li 2 CO 3 , which is more chemically stable than Li 2 O 2 and causes a larger charge overpotential, hence leading to decomposition issues of electrolytes. [5] Nevertheless, progress for the real-world usage of Li-S batteries is currently hindered by multiple drawbacks. First, despite its manifold advantages, sulfur and its discharge products (Li 2 S or Li 2 S 2 ) are inherently insulating with low conductivities of 10 −7 to 10 −30 S cm −1 at room temperature, rendering it unbefitting to be directly used as the cathode. [6] Second, the inevitable volume expansion of the electrode (≈80%) due to the contrasting densities of S 8 and Li 2 S causes structural damage during the charge/discharge cycle. [7] Third, the "polysulfide shuttle effect" would occur, whereby the soluble higher order polysulfides (Li 2 S 4 to Li 2 S 8 ) dissolve in the electrolyte and migrate between the anode and the cathode, leading to its Lithium-sulfur (Li-S) batteries have a high specific energy capacity and density of 1675 mAh g −1 and 2670 Wh kg −1 , respectively, rendering them among the most promising successors for lithium-ion batteries. However, there are myriads of obstacles in the practical application and commercialization of Li-S batteries, including the low conductivity of sulfur and its discharge products (Li 2 S/Li 2 S 2 ), volume expansion of sulfur electrode, and the polysulfide shuttle effect. Hence, immense attention has been devoted to rectifying these issues, of which the application of metal-based compounds (i.e., transition metal, metal phosphides, sulfides, oxides, carbides...

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Bamboo-like Co3O4 nanofiber as host materials for enhanced lithium-sulfur battery performance

Cited by 36 publications

References 26 publications

Host Materials Anchoring Polysulfides in Li–S Batteries Reviewed

Host Materials Anchoring Polysulfides in Li–S Batteries Reviewed

Embedding Cobalt Into ZIF-67 to Obtain Cobalt-Nanoporous Carbon Composites as Electrode Materials for Lithium ion Battery

Lithium–Sulfur Battery Cathode Design: Tailoring Metal‐Based Nanostructures for Robust Polysulfide Adsorption and Catalytic Conversion

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