Interface modification of an Al current collector for ultrafast lithium-ion batteries

Shin, Dong-Yo; Park, Dong-Hyoek; Ahn, Hyo‐Jin

doi:10.1016/j.apsusc.2019.01.016

Cited by 37 publications

(14 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lithium ion battery has a wide application in the fields of mobile communication, information technology, consumer electronics, and mobile automobiles due to its excellent energy storage characteristics. With the progress and development of the human society, advanced lithium-ion batteries are required to have higher capacity, better rate performance, and longer service life (Armand and Tarascon, 2008;Xin et al, 2012;Song and Zhou, 2013;Huang et al, 2016;Wang et al, 2016;Li et al, 2018;Tang et al, 2018;Lu et al, 2019;Shin et al, 2019). Among all the components of lithium-ion battery, electrode materials are the key factors that restrict the performance of lithium-ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile Hard Carbon as Anode of High Rate Capability for Lithium Ion Batteries

Rao

Lou

et al. 2020

Front. Energy Res.

View full text Add to dashboard Cite

In order to develop new type of carbon anode material with high performance, a novel organic carbon material polyacrylonitrile (PAN) hard carbon was prepared by calcination of polypropylene cyanide at 1,050 • C. The obtained PAN hard carbon is used as the negative electrode material of lithium ion battery, showing an initial capacity of 343.5 mAh g −1 which is equal to that of graphite electrode (348.6 mAh g −1 ), and a higher initial coulomb efficiency of 87.9% than that of graphite electrode (84.4%). Moreover, the PAN hard carbon electrode shows superior cycle stability and rate performance at different current rates. The charge capacities are 320.1, 219.0, 212.9, and 123.5 mAh g −1 at current rates of 0.2, 1, 2, and 3 C, with coulombic efficiencies of 98.1, 100.6, 88.1, and 110.0%, respectively, which are higher than those of graphite electrode (83.8, 97.6, 98.8, and 94.1%). In addition, the charging capacity of PAN hard carbon electrode can still remain at 284.3 mAh g −1 (0.2 C after 200 cycles), 226.4 mAh g −1 (1 C after 300 cycles), 149.5 mAh g −1 (2 C after 400 cycles), and 120.0 mAh g −1 (3 C after 100 cycles), with capacity retention rates of 78.2, 111.9, 79.7, and 88.6%, respectively. The capacity and capacity retention rate after cycling are significantly higher than those of graphite electrode, indicating that the PAN hard carbon electrode shows superior rate performance, which would provide a new idea for the development of novel negative electrode material with high performance.

show abstract

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile Hard Carbon as Anode of High Rate Capability for Lithium Ion Batteries

Rao

Lou

et al. 2020

Front. Energy Res.

View full text Add to dashboard Cite

show abstract

“…From these analyses, we observed that the improvement of the interfacial contact area of electrode//current collector enhances the adhesion of SP-Al and CQD-SP-Al. 3,4 The CQD lamination layer can also act as a passivation layer and CQD-SP-Al exhibits improved cycling stability by suppressing the corrosion of the Al current collector, both adding to the potential benefits of CQD coatings. 13 Figure 4A shows the XRD patterns of bare Al, SP-Al, and CQD-SP-Al.…”

Section: Resultsmentioning

confidence: 99%

“…Some companies are aiming to develop electric vehicle batteries, that can be completely charged within 6 minutes, requiring the charging speed faster than the C-rate of 10C. [3][4][5][6] Under ultrafast-charging conditions, there are many problems such as a drastically reduced lifetime and risk of explosion. Among the various causes of these problems, unstable interfacial conditions, such as those at the active material//additive, electrode//electrolyte, and current collector//electrode interfaces, are important factors to be considered.…”

Section: Introductionmentioning

confidence: 99%

“…Owing to the advantages of a small particle size and increased surface functional groups, the CQDs can be more uniformly laminated compared with other carbon-based coating materials, like carbon nanotubes or graphene. 4,13 The ultrasonic spray coating method also has additional merits, such as simplicity, a low cost, and reproducibility. In particular, the ultrasonic vibration of spraying nozzle generates fine precursor droplets, enabling the formation of a more uniform coating layer on a complex surface when compared with other coating methods such as dip or conventional spray coating.…”

Section: Introductionmentioning

confidence: 99%

“…However, despite their frequent use in electronic devices, LIBs even now have critical issues including poor cycling stability, low discharge capacity, and slow charging speed, which limit their application in advanced electrical devices. Some companies are aiming to develop electric vehicle batteries, that can be completely charged within 6 minutes, requiring the charging speed faster than the C‐rate of 10C 3‐6 . Under ultrafast‐charging conditions, there are many problems such as a drastically reduced lifetime and risk of explosion.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Carbon quantum dot‐laminated stepped porous Al current collector for stable and ultrafast lithium‐ion batteries

Sung

Kim

Ahn

2022

Intl J of Energy Research

View full text Add to dashboard Cite

Designing an interfacial architecture between the current collector and electrode plays a serious role in developing the specific capacity with cycling stability of lithium-ion batteries (LIBs). Consequently, an original approach to enhance the structure of the interface between the current collector and electrode is necessary. Thus, we developed a novel interface architecture based on carbon quantum dots (CQDs)-laminated on a stepped porous Al (SP-Al) current collector to attain stable and ultrafast-discharge LIBs and CQD-SP-Al for application as LIB cathodes. To this end, the electrochemical etching and ultrasonic spray coating methods were employed. The cathode assembled with CQD-SP-Al displayed the adhesion enhancing, an increased redox reaction kinetics, and the magnificent interfacial stability of the current collector//electrode interface because of the increased surface roughness, stepped pores with N-doped CQD, and uniform CQD lamination layer. The resultant cathode with CQD-SP-Al showed an enhanced specific capacity of 78.2 mAh/g and capacity retention of 92.6% at a high C-rate of 10C after 500 cycles. This great cycling stability is due to an expanded interfacial contact area of current collector// electrode with improved adhesion, as well as to the CQD lamination layer, while the excellent ultrafast discharge capacity is ascribed to the risen number of charge supplying/collecting sites, the stepped porous structure, and the highly conductive N-doped CQD lamination layer.

show abstract

Prevention of Carbon Corrosion by TiC Formation on Ti Current Collector in Seawater Batteries

Cho

Park

Lee

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Seawater batteries (SWBs) are a type of sodium-air batteries that use abundant seawater as the source of the catholyte. A cathode current collector in traditional SWBs is composed of titanium (Ti) and carbon-based current collectors. The high contact resistance between Ti and carbon-based current collectors as well as the slow kinetics of oxygen evolution and reduction reactions increase the overpotential, resulting in side reactions such as carbon corrosion. To enhance the performance of SWBs, previous studies have focused on carbon current collectors, catalysts, and polymer binders, while ignoring the importance of Ti. In this study, a facile carbon diffusion technique is employed to successfully form titanium carbide (TiC) on the surface of Ti. SWBs with engineered Ti demonstrate considerably improved performance (four times higher cycling stability, 30% increased power performance, 40% reduced voltage gap) in relation to those with pristine Ti. This significantly improved electrochemical performance is found to be attributable to the prevention of carbon corrosion due to i) the reduction of contact resistance (owing to rough TiC surface) and ii) the electrocatalytic effect of TiC. Finally, engineered Ti is applied to large-area SWBs and its potential applicability in energy storage systems is confirmed.

show abstract

Interface modification of an Al current collector for ultrafast lithium-ion batteries

Cited by 37 publications

References 18 publications

Polyacrylonitrile Hard Carbon as Anode of High Rate Capability for Lithium Ion Batteries

Polyacrylonitrile Hard Carbon as Anode of High Rate Capability for Lithium Ion Batteries

Carbon quantum dot‐laminated stepped porous Al current collector for stable and ultrafast lithium‐ion batteries

Prevention of Carbon Corrosion by TiC Formation on Ti Current Collector in Seawater Batteries

Contact Info

Product

Resources

About