Cyclability of a Lithium–Oxygen Battery Containing <i>N</i>‐Methyl‐2‐Pyrrolidone and a Vertically Aligned Carbon Nanotube Cathode

Chen, Yuming; Xie, Aozhen; Zhu, Yu

doi:10.1002/celc.201402311

Cited by 7 publications

(4 citation statements)

References 42 publications

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“…After 50 or more cycles, the discharged products become more difficult to be decomposed by the passivated active sites and even the large pores of MOHNs cannot accommodate the high amount of discharge products. Hence, the capacity drops and the battery reaches its limit [ 47 , 48 , 49 ].…”

Section: Resultsmentioning

confidence: 99%

Transition Metal Hollow Nanocages as Promising Cathodes for the Long-Term Cyclability of Li–O2 Batteries

Chatterjee

Cao

2018

Nanomaterials

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As a step towards efficient and cost-effective electrocatalytic cathodes for Li–O2 batteries, highly porous hausmannite-type Mn3O4 hollow nanocages (MOHNs) of a large diameter of ~250 nm and a high surface area of 90.65 m2·g−1 were synthesized and their physicochemical and electrochemical properties were studied in addition to their formation mechanism. A facile approach using carbon spheres as the template and MnCl2 as the precursor was adopted to suit the purpose. The MOHNs/Ketjenblack cathode-based Li–O2 battery demonstrated an improved cyclability of 50 discharge–charge cycles at a specific current of 400 mA·g−1 and a specific capacity of 600 mAh·g−1. In contrast, the Ketjenblack cathode-based one can sustain only 15 cycles under the same electrolytic system comprised of 1 M LiTFSI/TEGDME. It is surmised that the unique hollow nanocage morphology of MOHNs is responsible for the high electrochemical performance. The hollow nanocages were a result of the aggregation of crystalline nanoparticles of 25–35 nm size, and the mesoscopic pores between the nanoparticles gave rise to a loosely mesoporous structure for accommodating the volume change in the MOHNs/Ketjenblack cathode during electrocatalytic reactions. The improved cyclic stability is mainly due to the faster mass transport of the O2 through the mesoscopic pores. This work is comparable to the state-of-the-art experimentations on cathodes for Li–O2 batteries that focus on the use of non-precious transition materials.

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Section: Resultsmentioning

confidence: 99%

Transition Metal Hollow Nanocages as Promising Cathodes for the Long-Term Cyclability of Li–O2 Batteries

Chatterjee

Cao

2018

Nanomaterials

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“…The carbon electrode used in this work is made of vertically aligned carbon nanotubes (VACNTs) on a stainless-steel substrate. The synthesis of the VACNT electrode followed our previous work (see Supporting Information for the details). − The specific capacitance of the VACNT electrode was determined by a method similar to that for polymer electrode (Supporting Information Figure S7). The growth time of CNT was controlled to reach the maximum specific areal capacitance.…”

Section: Resultsmentioning

confidence: 99%

Electropolymerized Porous Conjugated Polymer Film as an Electrode for a Stable, High Energy Density Thin Film Asymmetric Supercapacitor

Chen

Tung

Yang

et al. 2019

ACS Appl. Polym. Mater.

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A novel π-conjugated monomer tert-butyl 3,8-di([2,2′-bithiophen]-5-yl)-6-oxophenanthridine-5(6H)carboxylate (PNBTH-Boc) with a labile side chain was synthesized. The monomer was electropolymerized to form redoxactive polymer (Poly-PNBTH-Boc) on the current collector. The labile side chains on the polymer were then removed by thermal annealing, resulting in the porous electroactive film (Poly-PNBTH). The annealed polymer exhibited a stable oxidation process and high specific areal capacitance. Asymmetric supercapacitors were fabricated with the polymer as the positive electrode and vertically aligned carbon nanotubes as the negative electrode. The supercapacitor exhibited outstanding cyclability with 85% capacitance retention after 10 000 cycles. The thin film supercapacitor device demonstrated an energy density of 23.5 μWh/cm 2 and a power density of 14 mW/cm 2 .

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“…Aligned carbon structures have been used in other battery systems such as Li-O 2 batteries, [77,[134][135][136][137][138][139][140][141][142][143][144][145] Li-CO 2 batteries, [146] Li-iodine batteries, [147] SIBs, [148][149][150][151] etc., and especially for the air electrode in Li-air batteries. A typical Li-O 2 battery generally consists of a metallic lithium anode, a porous cathode and a nonaqueous electrolyte.…”

Section: Other Batteriesmentioning

confidence: 99%

“…Multiwall CNTs can provide catalytically active sites in alkaline solutions for electrochemical oxygen reduction reactions due to their surface defects, [153,154] and various CNT structures have been utilized. [135][136][137]139,141] Xing's group used nitrogendoped CNT arrays formed on carbon fiber paper using electrodeposited Ni catalysts followed by plasma-enhanced CVD (Figure 13a). [138] The CNTs are parallel and aligned perpendicular to the carbon paper surface due to the electric field, creating a nanostructure with tubular nanopillars and straight pathways.…”

Section: Other Batteriesmentioning

confidence: 99%

Aligned Carbon‐Based Electrodes for Fast‐Charging Batteries: A Review

Huang

Jiao

et al. 2021

Small

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202007676. Fast-charging batteries have attracted great attention, and are anticipated to charge electrical vehicles and consumer electronics to full-capacity in several minutes. However, commercial electrode materials in batteries generally have a limited rate performance and are difficult to be used in fast-charging batteries. Designing electrodes with an aligned structure is an effective way to shorten the ion transport path and improve the rate performance of a battery. The excellent electronic conductivity of carbon-based electrodes is another key factor for increasing the rate capability of rechargeable batteries. Therefore, aligned carbon-based electrodes (ACBEs) can significantly improve the power density by combining the advantages of an aligned structure and carbon-based materials. In this review, the mechanism, advantages, and challenges of ACBEs for fast-charging batteries are evaluated, and then the design and preparation methods of ACBEs based on their different dimensions are summarized, and their applications in different batteries are illustrated. Finally, the future development of ACBEs for fast-charging batteries is considered.

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Cyclability of a Lithium–Oxygen Battery Containing N‐Methyl‐2‐Pyrrolidone and a Vertically Aligned Carbon Nanotube Cathode

Cited by 7 publications

References 42 publications

Transition Metal Hollow Nanocages as Promising Cathodes for the Long-Term Cyclability of Li–O2 Batteries

Transition Metal Hollow Nanocages as Promising Cathodes for the Long-Term Cyclability of Li–O2 Batteries

Electropolymerized Porous Conjugated Polymer Film as an Electrode for a Stable, High Energy Density Thin Film Asymmetric Supercapacitor

Aligned Carbon‐Based Electrodes for Fast‐Charging Batteries: A Review

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