Articles
  • Effect of length of alkyl chain consisting of fluorine and carbon in self-assembled monolayers
  • Sang-Geon Parka , Won Jae Leeb , Won Jae Leeb and Tae Wan Kimc,*
  • a Division of Smart Electrical and Electronic, Silla University, 140 Baegyang-daero (Blvd) 700beon-gil (Rd), Sasang-gu, Busan 46958, Korea b Department of Electronic Engineering, Gachon University, Gyeonggi 13120, Korea c Department of Information Display Engineering, Hongik University, Seoul 04066, Korea
Abstract
All-solid-state lithium batteries (ASSBs) using inorganic sulfide-based solid electrolytes are considered prospective alternatives to existing liquid electrolyte-based batteries owing to benefits such as non-flammability. However, it is difficult to form a favorable solid-solid interface among electrode constituents because all the constituents are solid particles. It is important to form an effective electron conduction network in composite cathode while increasing utilization of active materials and not blocking the lithium ion path, resulting in excellent cell performance. In this study, a mixture of fibrous VGCF and spherical nano-sized Super P was used to improve rate performance by fabricating valid conduction paths in composite cathodes. Then, composite cathodes of ASSBs containing 70% and 80% active materials (LiNi0.6Co0.2Mn0.2O2) were prepared by a solutionbased process to achieve uniform dispersion of the electrode components in the slurry. We investigated the influence of binary carbon additives in the cathode of all-solid-state batteries to improve rate performance by constructing an effective electron conduction network.

Keywords: Conductive additive mixture, Solution-based process, Sulfide solid electrolyte, All-solid-state battery.

This Article

  • 2018; 19(5): 361-368

    Published on Oct 30, 2018