Impact of mechanical bending on the electrochemical performance of bendable lithium batteries with paper-like free-standing V2O5–polypyrrole cathodes

Noerochim, Lukman; Wang, Jiazhao; Wexler, David; Rahman, Mokhlesur; Chen, Jun; Liu, Huan

doi:10.1039/c2jm16470a

Cited by 46 publications

(30 citation statements)

References 40 publications

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“…This type of anode is not suitable for flexible or bendable LIBs because it suffers from serious cracking and damage caused by the weak bonding between the metal substrate and the other materials during frequent bending. To avoid this drawback and lower the cost of LIBs, the development of free-standing anode materials is required [6,7].…”

Section: Introductionmentioning

confidence: 99%

A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

Wang

Sun

et al. 2014

J. Mater. Chem. A

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Paper-like free-standing germanium (Ge) and single-walled carbon nanotube (SWCNT) composite anodes were synthesized by the vacuum filtration of Ge/SWCNT composites, which were prepared by a facile aqueous-based method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Electrochemical measurements demonstrate that the Ge/ SWCNT composite paper anode with the weight percentage of 32% Ge delivered a specific discharge capacity of 417 mA h g−1 after 40 cycles at a current density of 25 mA g−1, 117% higher than the pure SWCNT paper anode. The SWCNTs not only function as a flexible mechanical support for strain release, but also provide excellent electrically conducting channels, while the nanosized Ge particles contribute to improving the discharge capacity of the paper anode. Paper-like free-standing germanium (Ge) and single-walled carbon nanotube (SWCNT) composite anodes were synthesized by the vacuum filtration of Ge/SWCNT composites, which were prepared by a facile aqueous-based method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Electrochemical measurements demonstrate that the Ge/SWCNT composite paper anode with the weight percentage of 32% Ge delivered a specific discharge capacity of 417 mAh g -1 after 40 cycles at a current density of 25 mA g -1 , 117% higher than the pure SWCNT paper anode. The SWCNTs not only function as a flexible mechanical support for strain release, but also provide excellent electrically conducting channels, while the nanosized Ge contributes to improving the discharge capacity of the paper anode.

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Section: Introductionmentioning

confidence: 99%

A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

Wang

Sun

et al. 2014

J. Mater. Chem. A

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“…A free-standing PPy-LiFePO 4 film was prepared by coating the 0.06 M pyrrole and 0.05 M tetrabutylammonium hexafluorophosphate/propylene carbonate with LiFePO 4 powder onto a polished stainless steel plate, followed by the peeling off of the film after galvanostatic deposition for 1 h. The composite film exhibited a discharge capacity of 80 mAh/g, which is higher than that of PPy film (60 mAh/g) used as a comparison sample. Noerochim et al reported a paper-like free-standing V 2 O 5 -polypyrrole cathode [32]. In this case, they used an additional steel mesh as a current collector and the polypyrrole as active material.…”

Section: Conducting Polymersmentioning

confidence: 99%

Current Collectors for Flexible Lithium Ion Batteries: A Review of Materials

Kim¹,

Cho²

2015

Journal of Electrochemical Science and Technology

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With increasing interest in flexible electronic devices and wearable appliances, flexible lithium ion batteries are the most attractive candidates for flexible energy sources. During the last decade, many different kinds of flexible batteries have been reported. Although research of flexible lithium ion batteries is in its earlier stages, we have found that developing components that satisfy performance conditions under external deformation stress is a critical key to the success of flexible energy sources. Among the major components of the lithium ion battery, electrodes, which are connected to the current collectors, are gaining the most attention owing to their rigid and brittle character. In this mini review, we discuss candidate materials for current collectors and the previous strategies implemented for flexible electrode fabrication.

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“…Typical conductive polymers such as poly (3, 4-ethylenedioxythiophene) (PEDOT) [152] and polypyrrole (Ppy) [153] were widely applied as coating materials on V 2 O 5 nanostructures. The specific capacity, cycling stability, and high rate capacity can be effectively improved.…”

Section: Vanadium Oxide Nanocomposites In Libsmentioning

confidence: 99%

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

Liu

Tang

et al. 2017

Advanced Energy Materials

220

127

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Vanadium oxides are known for their multioxidation states and diverse crystalline structures. Owing to their excellent interactions with molecules or ions, outstanding catalytic activities, and/or strong electron–electron correlations, nanostructured vanadium oxides have been extensively studied for energy conversion in the recent years. Here is a review of the recent advances in the development of nanostructured vanadium oxides and their applications. The synthesis strategies and structural properties of various vanadium oxide nanostructures, including vanadium dioxide (VO2), vanadium pentoxide (V2O5), and others, are summarized. The applications of vanadium oxides in energy conversion are discussed, focusing on three important types of energy sources: chemical energy (LIBs, pseudocapacitors and fuel cells), solar energy (photovoltaics and photocatalytic hydrogen evolutions), and heat (thermoelectric generation). Finally, conclusion with our remarks on the prospects of nanostructured vanadium oxides in energy conversion are provided.

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Impact of mechanical bending on the electrochemical performance of bendable lithium batteries with paper-like free-standing V2O5–polypyrrole cathodes

Cited by 46 publications

References 40 publications

A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

Current Collectors for Flexible Lithium Ion Batteries: A Review of Materials

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

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