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Large‐Scale LiO 2 Pouch Type Cells for Practical Evaluation and Applications
Author(s) -
Shin HyeonJi,
Kwak WonJin,
Aurbach Doron,
Sun YangKook
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201605500
Subject(s) - materials science , battery (electricity) , electrode , energy density , scale (ratio) , key (lock) , specific energy , nanotechnology , energy storage , engineering physics , work (physics) , process engineering , computer science , mechanical engineering , power (physics) , thermodynamics , engineering , physics , chemistry , quantum mechanics , computer security
Due to their high theoretical specific capacity and energy density, LiO 2 batteries are considered as candidates for next‐generation battery systems in place of conventional Li‐ion batteries for advanced applications such as electric vehicles. However, low energy efficiency, poor cycle life, and Li‐metal safety issues make the use of LiO 2 batteries yet impractical. In addition, actual cell capacities are very low, and since only small‐scale electrodes are currently tested, it is hard to predict the properties of large‐size electrodes and cells, thus evaluating and judging real practical challenges related to this battery technology. In this work, the behavior of pouch‐type LiO 2 cells using 3 × 5 cm 2 sized electrodes is investigated and it is confirmed that Li‐metal is a key issue for the upscale of LiO 2 cells. This study can help to determine which parameters are the most important for developing practical LiO 2 batteries.