Li-Ion Capacitors: Materials, Devices and Systems

A special issue of Batteries (ISSN 2313-0105).

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 4558

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Guest Editor
Graduate School of Engineering Science, Department of Mathematical Science and Electrical-Electronic-Computer Engineering, Tegata Campus, Akita University, Akita 010-8502, Japan
Interests: energy storage system; supercapacitors; lithium-ion batteries; lithium-ion capacitors; electric double-layer capacitors; biomass; burnt rice husk charcoal
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Special Issue Information

Dear Colleagues,

There is a strong need to enhance both the energy and power density of energy storage devices, especially in the fields of portable devices and transportation. Recently, Li-ion capacitors (LICs) have been attracting attention as energy storage devices which can compensate for the low power density and short cycle life of existing Li-ion batteries and for the low energy density of electric double-layer capacitors. LICs are categorized as hybrid capacitors, in which non-faradaic processes generating the electric double layer proceed on the cathode, and faradaic reactions occur within the anode through Li-ion insertion/extraction. Since the development of coin-type LICs by Kanebo in 1991 and the development of 1000 F-class high-capacitance LICs by Fuji Heavy Industries (now Subaru) in 2005, academia and industrial sectors have been intensively performing R&D. It is now an appropriate time to publish a Special Issue targeting recent developments and reviewing the technological trends and market penetration of LICs.

In addition to the wide variety in material selections of cathode and anode active materials, binders, electrolytes and separators, LICs have various device factors such as the mass ratio of cathode and anode active materials, anode pre-lithiation (pre-doping of Li ions) level and working cell voltage range that significantly influence their charge–discharge performances and lifetimes. Field experiences with LICs embedded in systems of the electronic device, transportation, robotics and machinery sectors are now highly needed to be published in order to share knowledge on their actual performances. The journal Batteries invites contributions to this Special Issue featuring recent technological developments in LICs from the aspect of materials, devices and systems. Review articles regarding LIC technology are also welcome.

Topics of interest include, but are not limited to, the following:

  • Performance enhancement of LICs by using novel materials (cathode and anode active materials, conductive agents, binders, current collectors, electrolytes, separators, etc.) and by device optimization (electrode design, pre-lithiation strategy, cell assembly and packaging methodology, etc.);
  • Material and electrochemical studies towards device components intended for use in LICs;
  • Working mechanism studies of LICs in various working conditions (high and low temperatures, excessive charging and discharging, etc.);
  • Aging behavior and modeling of LICs in various working conditions;
  • Diagnosis or monitoring technology of LICs;
  • Case studies of prototypes or commercial LICs used in industrial applications such as electronic devices and vehicles, and in special environments;
  • Hybridization of LICs with other types of energy devices such as secondary batteries and fuel cells.

Prof. Dr. Seiji Kumagai
Guest Editor

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Keywords

  • lithium-ion capacitors
  • electrochemical capacitors
  • hybrid capacitors
  • electrode
  • electrolyte
  • pre-lithiation
  • energy density
  • power density
  • lifetime
  • aging
  • diagnosis
  • monitoring

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Published Papers (1 paper)

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Research

14 pages, 3459 KiB  
Article
Impact of Full Prelithiation of Si-Based Anodes on the Rate and Cycle Performance of Li-Ion Capacitors
by Takuya Eguchi, Ryoichi Sugawara, Yusuke Abe, Masahiro Tomioka and Seiji Kumagai
Batteries 2022, 8(6), 49; https://doi.org/10.3390/batteries8060049 - 27 May 2022
Cited by 7 | Viewed by 3824
Abstract
The impact of full prelithiation on the rate and cycle performance of a Si-based Li-ion capacitor (LIC) was investigated. Full prelithiation of the anode was achieved by assembling a half cell with a 2 µm-sized Si anode (0 V vs. Li/Li+) [...] Read more.
The impact of full prelithiation on the rate and cycle performance of a Si-based Li-ion capacitor (LIC) was investigated. Full prelithiation of the anode was achieved by assembling a half cell with a 2 µm-sized Si anode (0 V vs. Li/Li+) and Li metal. A three-electrode full cell (100% prelithiation) was assembled using an activated carbon (AC) cathode with a high specific surface area (3041 m2/g), fully prelithiated Si anode, and Li metal reference electrode. A three-electrode full cell (87% prelithiation) using a Si anode prelithiated with 87% Li ions was also assembled. Both cells displayed similar energy density levels at a lower power density (200 Wh/kg at ≤100 W/kg; based on the total mass of AC and Si). However, at a higher power density (1 kW/kg), the 100% prelithiation cell maintained a high energy density (180 Wh/kg), whereas that of the 87% prelithiation cell was significantly reduced (80 Wh/kg). During charge/discharge cycling at ~1 kW/kg, the energy density retention of the 100% prelithiation cell was higher than that of the 87% prelithiation cell. The larger irreversibility of the Si anode during the initial Li-ion uptake/release cycles confirmed that the simple full prelithiation process is essential for Si-based LIC cells. Full article
(This article belongs to the Special Issue Li-Ion Capacitors: Materials, Devices and Systems)
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