Foldable Electrode Architectures Based on Silver‐Nanowire‐Wound or Carbon‐Nanotube‐Webbed Micrometer‐Scale Fibers of Polyethylene Terephthalate Mats for Flexible Lithium‐Ion Batteries

Hwang, Chihyun; Song, Woo‐Jin; Han, Jung‐Gu; Bae, Sohyun; Song, Gyujin; Choi, Nam‐Soon; Park, Soo‐Jin; Song, Hyun‐Kon

doi:10.1002/adma.201705445

Cited by 46 publications

(51 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure e exhibits the excellent cycling performance of the full batteries equipped with the prestrained SBN separator membrane at a rate of 1 C for 100 cycles. Interestingly, these results demonstrate that SBN635 separator membrane successfully performed physical barrier to prevent the electrical contact between electrodes and ionic conducting channel even under 100% strain …”

Section: Resultsmentioning

confidence: 86%

Highly Stretchable Separator Membrane for Deformable Energy‐Storage Devices

Shin

Song

Son

et al. 2018

Advanced Energy Materials

Self Cite

View full text Add to dashboard Cite

LIBs), stretchable supercapacitors, and stretchable silver-zinc batteries. [5][6][7][8] Most of them mainly focused on the development of deformable current collectors (e.g., embedding conductive materials in soft substrates or elastic substrates) [9,10] or structural layouts (e.g., helically coiled spring design, serpentine interconnected configuration, and origami structure). [11][12][13] In comparison, a stretchable separator membrane for deformable energystorage devices attracts little attention. The separator membrane is basically used to prevent physical and electrical contact between electrodes while offering an ion conduction channel. [14] Various types of stretchable batteries are being developed, and thus the stretchable properties of the separator membrane are also required. Generally, because ionic gel-polymer electrolytes (GPEs) are easily controllable and sufficiently deformable, they have been employed as the separator membrane in deformable energy-storage devices. [13,15,16] Although ion-conducting GPEs can be used as both electrolyte and separator, they have intrinsically lower ionic conductivity than liquid electrolytes [17] and poor mechanical properties which are likely to cause an internal short problem due to the contact of both electrodes under physical deformation. [18,19] In order to fabricate a reliable stretchable energy-storage device without these limitations, the presence of a physical separation barrier having an ion-conducting channel and stretchability is essential. Recently, Liu et al. reported a stretchable separator membrane for wavy-structured stretchable LIBs using electrospinning techniques. [20] Li et al. also used electrospinning process to fabricate a stretchable polyurethane separator for stretchable supercapacitor. [21] However, electrospinning has critical drawbacks such as the use of complex equipment, slow production rate, and possible toxicity of chemical residues in electrospun fibers. Moreover, it has the limitation for largescale production for industry level due to its high cost. [22,23] Given these limitations, it is still necessary to develop and improve the fabrication methodologies for stretchable separator membranes. Although various attempts have been made in the membrane component to achieve the complete stretchability of the battery, the development of the standardized separator membrane that can be applied to various types of stretchable battery has not yet been reported. Therefore, the development of stretchable separator membranes with high processibility With the emergence of stretchable electronic devices, there is growing interest in the development of deformable power accessories that can power them. To date, various approaches have been reported for replacing rigid components of typical batteries with elastic materials. Little attention, however, has been paid to stretchable separator membranes that can not only prevent internal short circuit but also provide an ionic conducting pathway between electrodes under extreme physical deformation. Herei...

show abstract

Section: Resultsmentioning

confidence: 86%

Highly Stretchable Separator Membrane for Deformable Energy‐Storage Devices

Shin

Song

Son

et al. 2018

Advanced Energy Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Pouch-type Ag@LTO@PET-based half cells showed great cycling performance with little capacity decay when the electrode was bent at any angle (Fig. 11c) [165]. The most mature method is to fix the active material on a flexible substrate.…”

Section: Application In Flexible Batteriesmentioning

confidence: 99%

“…Assembly and bending tests of flexible batteries with flexible electrodes[164]. b Electrical resistance change with folding cycles[165]. c Capacity retention of folded cells at different angles at 1 C[165] …”

mentioning

confidence: 99%

See 1 more Smart Citation

Binder-Free Electrodes and Their Application for Li-Ion Batteries

Kang¹,

Deng

Chen³

et al. 2020

Nanoscale Res Lett

View full text Add to dashboard Cite

Lithium-ion batteries (LIB) as energy supply and storage systems have been widely used in electronics, electric vehicles, and utility grids. However, there is an increasing demand to enhance the energy density of LIB. Therefore, the development of new electrode materials with high energy density becomes significant. Although many novel materials have been discovered, issues remain as (1) the weak interaction and interface problem between the binder and the active material (metal oxide, Si, Li, S, etc.), (2) large volume change, (3) low ion/electron conductivity, and (4) selfaggregation of active materials during charge and discharge processes. Currently, the binder-free electrode serves as a promising candidate to address the issues above. Firstly, the interface problem of the binder and active materials can be solved by fixing the active material directly to the conductive substrate. Secondly, the large volume expansion of active materials can be accommodated by the porosity of the binder-free electrode. Thirdly, the ion and electron conductivity can be enhanced by the close contact between the conductive substrate and the active material. Therefore, the binderfree electrode generally exhibits excellent electrochemical performances. The traditional manufacture process contains electrochemically inactive binders and conductive materials, which reduces the specific capacity and energy density of the active materials. When the binder and the conductive material are eliminated, the energy density of the battery can be largely improved. This review presents the preparation, application, and outlook of binder-free electrodes. First, different conductive substrates are introduced, which serve as carriers for the active materials. It is followed by the binderfree electrode fabrication method from the perspectives of chemistry, physics, and electricity. Subsequently, the application of the binder-free electrode in the field of the flexible battery is presented. Finally, the outlook in terms of these processing methods and the applications are provided.

show abstract

“…However, if a thin freestanding Ag nanowire‐based paper material with high conductivity and good flexibility were successfully developed, then the lithophilic/sodiophilic nature of Ag facilitating homogeneous Li/Na deposition on Ag could enable the manufacture of high‐performance metal anodes . However, to the best of our knowledge, there is little interest in Ag nanowire‐structured flexible conducting electrodes for rechargeable battery applications in general, as only a few publications focus on electrodes for lithium‐ion batteries …”

Section: Introductionmentioning

confidence: 99%

Lightweight, Thin, and Flexible Silver Nanopaper Electrodes for High‐Capacity Dendrite‐Free Sodium Metal Anodes

Wang

Zhang

Zhou

et al. 2018

Adv Funct Materials

View full text Add to dashboard Cite

Owing to its resource-abundant and favorable theoretical capacity, sodium metal is regarded as a promising anode material for sodium metal batteries. However, uncontrolled Na plating/stripping, including Na dendrite growth during cycling, has hindered its practical application. Herein, a sodiophilic, thin, and flexible silver nanopaper (AgNP) is designed based on interpenetrated nanocellulose and silver nanowires and is used as a dendrite-free Na metal electrode. Due to a network of highly conducting silver nanowire (0.6 Ω sq −1 , 8200 S cm −1 ), the sodiophilic nature of silver, and the reduced internal strain within the flexible AgNP, a compact Na metal layer can be uniformly deposited on and reversibly stripped from the AgNP electrode without any observations of Na dendrites during cycling at 1 mA cm −2 for 800 h. As the AgNP electrode is only 2 µm thick, with a low mass loading of 0.88 mg cm −2 , the AgNP-Na anode deposited with a Na deposition charge of 6 mAh cm −2 exhibits a capacity of 995 mAh g −1 AgNP-Na , approaching that of a Na metal anode (1166 mAh g −1 Na ). The present approach provides new possibilities for the development of lightweight and stable metal batteries.

show abstract

Foldable Electrode Architectures Based on Silver‐Nanowire‐Wound or Carbon‐Nanotube‐Webbed Micrometer‐Scale Fibers of Polyethylene Terephthalate Mats for Flexible Lithium‐Ion Batteries

Cited by 46 publications

References 48 publications

Highly Stretchable Separator Membrane for Deformable Energy‐Storage Devices

Highly Stretchable Separator Membrane for Deformable Energy‐Storage Devices

Binder-Free Electrodes and Their Application for Li-Ion Batteries

Lightweight, Thin, and Flexible Silver Nanopaper Electrodes for High‐Capacity Dendrite‐Free Sodium Metal Anodes

Contact Info

Product

Resources

About