Real-time displacement and strain mappings of lithium-ion batteries using three-dimensional digital image correlation

Abstract

This work presents the first application of three-dimensional digital image correlation for real-time displacement and strain analysis of a pouch type lithium-ion battery. During the electrochemical charge-discharge processes, displacements in the x-, y-and z-directions vary at different states-of-charge (SOCs) attributed to the expansion and the contraction of the interior structure. The z-displacement is observed to develop and concentrate at the vicinity of the openings of the jelly-roll structure. By resolving the displacement components, the progression and distribution of the surface strains, including principal and von-Mises strains, are computed in the charge-discharge processes. It is shown that the dominant strains are up to 0.12 % in the rolling direction of the jelly-roll structure and distribute uniformly on the x-y plane over the surface.

In-situ measurements of mechanical and volume change of LiCoO2 lithium-ion batteries during repeated charge–discharge cycling by using digital image correlation

“…Chen et al studied the roles of binders in the mechanical integrity of electrodes for LIBs by the coupled micro-scratch and two-dimensional DIC techniques [25]. Leung et al applied three-dimensional (3D) DIC technique to real-time observe the evolution of displacement and strain of a pouch-type LIB under the first five cycles [26]. However, the measurement was limited to several charge-discharge cycles and it was difficult to draw implication for full lifetime of the batteries.…”

Performance characterization of a vanadium redox flow battery at different operating parameters under a standardized test-bed system

“…Currently, researchers tend to find the solutions by looking towards a more sustainable (renewable) and cost effective energy storage, and a paradigm shift towards environment-friendly energy resources [1,2]. Many new and innovative ideas have been explored in broad areas of energy storage technologies that meet the environmental and energy policy concerns [3,4]: difference in size, capacity and complexity in design.…”

A mixed acid based vanadium–cerium redox flow battery with a zero-gap serpentine architecture

“…Despite the lower specific energy than lithium ion batteries [1], RFBs differ from the conventional static batteries in that they store energy in the form of the reduced and oxidized species in the electrolytes. Hence, the storage capacity of the RFB can be increased readily by using larger volumes of the electrolytes, which are stored in external reservoirs [2e4].…”