Studies of SDX on the Boundary Resistance between Aluminum Current Collectors and Cathode Active Material Layers

Arai, Yoshikazu; Kunisawa, Masatoshi; Yamaguchi, Tomohiko; Yokouchi, Hitoshi; Matsuo, Akira; Ohmori, Masahiro

doi:10.1149/05026.0153ecst

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 137 ] Generally, the unsatisfactory interface contact between active materials and traditional current collectors (such as bare aluminum foil) is caused by the electrically insulating aluminum oxide layer on the aluminum foil, which may be accompanied by poor adhesion and high interface resistance. [ 138,139 ] As expected, this impairs the rate capability of BSHDs dramatically. [ 140 ] Therefore, interface engineering is key for improving ultrafast charging performance by enhancing the ionic and electronic transport at these crucial junctions.…”

Section: Interface Engineering For Ishs and Iphsmentioning

confidence: 73%

Unraveling the Design Principles of Battery‐Supercapacitor Hybrid Devices: From Fundamental Mechanisms to Microstructure Engineering and Challenging Perspectives

Xing

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

To this end, electrical energy storage (e.g., batteries, supercapacitors) has become a key supporting technology for the utilization of intermittent energy sources (e.g., sun, wind, nuclear energy). [3] Clearly, lithium-ion batteries (LIBs) are by far the most important electrochemical energy storage devices available for portable electronics, power tools, and electric vehicles on the market. However, LIBs suffer from the slow ion diffusion in electrode bulk, resulting in commercially achievable energy density of 80-270 W h kg −1 , and power density typically <1000 W kg −1 at the cell level. Thus this greatly restricts their fast-charge and high-power applications. [4] In contrast, supercapacitors can be charged within seconds and provide higher power density (≥10 kW kg −1 ), but the energy stored is ≈1-2 orders of magnitude less than LIBs (basically ≤ 10 Wh kg −1 ). [5][6][7] Therefore, both conventional batteries and supercapacitors can't fully satisfy certain application scenarios such as hybrid electric vehicles (HEVs) and regenerative braking energy harvesting, which require high energy density, high power density, and long-term cycle stability. To overcome this issue, the new-type BSHDs, as one of the key energy storage technologies in multi-scenario applications, are recently developed to balance the gap between batteries and supercapacitors, and can simultaneously realize the "double high" trend of high energy density and high power density. [4] Although BSHDs have made some progress in recent years through the modification of cathode materials, anode materials, and electrolytes, as well as the use of pre-lithiation or other techniques, the reported energy density of commercialized BSHDs is still lower than 30 Wh kg −1 , [8,9] and no significant breakthrough improvement in "double high" goal of "100 Wh kg −1 & 100 kW kg −1 " has been achieved. Therefore, how to further promote the high-quality development of BSHDs is still worthy of in-depth investigation by academics and industrial counterparts. [8] As shown in Figure 1, the hybridization of batteries and supercapacitors for BSHDs can be divided into four types, including external serial hybrids (ESHs), external parallel hybrids (EPHs), internal serial hybrids (ISHs), and internal parallel hybrids (IPHs). [10] Based on the hybridization mode, BSHDs can be divided into two types: simple physical

show abstract

Section: Interface Engineering For Ishs and Iphsmentioning

confidence: 73%

Unraveling the Design Principles of Battery‐Supercapacitor Hybrid Devices: From Fundamental Mechanisms to Microstructure Engineering and Challenging Perspectives

Xing

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

“…In general, the electrode resistance can be divided into material resistance and interface resistance between the active layer and metal electrode. A. Takeda et al have successfully individual measured the material resistance of the electrode composite and the interface resistance between the electrode composite and the current collector using the electrode resistance meter (RM2610 HIOKI) [40][41][42]. Here, we also measure the material resistance and interface resistance of LTO electrode to study the impact of PDG layer on the electronic resistance.…”

Section: Resultsmentioning

confidence: 98%

Modification of aluminum current collectors with laser-scribed graphene for enhancing the performance of lithium ion batteries

Cho

Chang-Jian

et al. 2021

Journal of Power Sources

View full text Add to dashboard Cite

“…Consequently, EM are prone to delaminating from bare current collector due to poor adhesion and a large interfacial resistance exists at the CC/EM interface, because of limited electric channels. Because of the presence of a native electrically insulating aluminum oxide layer on Al foil, this problem is particularly highlighted on the cathode/Al foil interface. , The awesome interfacial resistance impairs the power properties (such as fast charging and high-power-discharging) of LIBs dramatically . Thus, for the amelioration of LIB, it is of primary significance to revisit the mesoscopic electrode configuration with a focus on the interfacial properties of current collector.…”

mentioning

confidence: 99%

Quantitative Analyses of the Interfacial Properties of Current Collectors at the Mesoscopic Level in Lithium Ion Batteries by Using Hierarchical Graphene

et al. 2020

View full text Add to dashboard Cite

At the mesoscopic level of commercial lithium ion battery (LIB), it is widely believed that the poor contacts between current collector (CC) and electrode materials (EM) lead to weak adhesions and large interfacial electric resistances. However, systematic quantitative analyses of the influence of the interfacial properties of CC are still scarce.Here, we built a model interface between CC and electrode materials by directly growing hierarchical graphene films on commercial Al foil CC, and we performed systematic quantitative studies of the interfacial properties therein. Our results show that the interfacial electric resistance dominates, i.e. ∼2 orders of magnitude higher than that of electrode materials. The interfacial resistance could be eliminated by hierarchical graphene interlayer. Cathode on CC with eliminated interfacial resistance could deliver much improved power density outputs. Our work quantifies the mesoscopic factors influencing the battery performance and offers practical guidelines of boosting the performance of LIBs and beyond.

show abstract

Studies of SDX on the Boundary Resistance between Aluminum Current Collectors and Cathode Active Material Layers

Cited by 5 publications

References 0 publications

Unraveling the Design Principles of Battery‐Supercapacitor Hybrid Devices: From Fundamental Mechanisms to Microstructure Engineering and Challenging Perspectives

Unraveling the Design Principles of Battery‐Supercapacitor Hybrid Devices: From Fundamental Mechanisms to Microstructure Engineering and Challenging Perspectives

Modification of aluminum current collectors with laser-scribed graphene for enhancing the performance of lithium ion batteries

Quantitative Analyses of the Interfacial Properties of Current Collectors at the Mesoscopic Level in Lithium Ion Batteries by Using Hierarchical Graphene

Contact Info

Product

Resources

About