Continuous Composition Spread and Electrochemical Studies of Low Cobalt Content Li(Ni,Mn,Co)O2 Cathode Materials

Abstract

Many scientific efforts have been undertaken toward reducing the Co content in LiMn1/3Ni1/3Co1/3O2 cathode materials for thin-film batteries. In this study, we present cathodes with a wide range of Li(Ni, Mn, Co)O2 compositions to determine the material with the best electrochemical performance by changing the ratio of Ni to Mn at a fixed 0.1 at.% of Co by the continuous composition spread sputtering method. The cathode composition measurements by Rutherford backscattering spectroscopy show that the best electrochemical performance is obtained for a composition of Ni:Mn:Co = 19:71:10. The reasons for this improved electrochemical performance are further investigated by X-ray diffraction, electrochemical impedance spectroscopy, Fourier-transform infrared spectroscopy, and X-ray absorption near edge spectroscopy.

Superconducting HfO2-YBa2Cu3O7−δ Nanocomposite Films Deposited Using Ink-Jet Printing of Colloidal Solutions

“…The optimization of these YBCO nanocomposite films can be accelerated by means of combinatorial methods. Concerning the thin-film deposition of oxide materials, PLD and sputtering process have been mostly applied for the creation of a continuous composition spread (CCS) [51][52][53]. The CCS method is often used to explore compositions with two or more different elements.…”

Improved Cycling Performance and High Rate Capacity of LiNi0.8Co0.1Mn0.1O2 Cathode Achieved by Al(PO3)3 Modification via Dry Coating Ball Milling

“…Intensive investigations have proved that element doping and surface modification are effective ways to solve the mentioned shortcomings of NCM811 [7][8][9][10]. Substantial efforts have been made to suppress the phase transition and cation disorder.…”

Unravelling the Crystallization Process in Solution-Derived YBa2Cu3O7-δ Nanocomposite Films with Preformed ZrO2 Nanocrystals via Definitive Screening Design

“…In order to optimize the resources and to decrease the effort (both in time and money) spent in these investigations, combinatorial approaches have emerged as an interesting option that allow to accelerate the research and development process through parallel and rapid sequential experimentation . The continuous composition spread (CCS) approach has already been applied for film deposition of oxide materials via pulsed laser deposition and sputtering. − The CCS approach has the advantage of being able to grow thin-films with several dozens of compositions at a time compared with conventional solid-state synthesis. However, this approach is not possible for CSD YBCO nanocomposites due to the complexity of CSD .…”