Virtual unrolling of spirally-wound lithium-ion cells for correlative degradation studies and predictive fault detection
作者： Matt DR Kok , James B Robinson , Julia S Weaving , Anmol Jnawali , Martin Pham
DOI: 10.1039/C9SE00500E
关键词: Fade 、 Electrode 、 Initial value problem 、 Fault detection and isolation 、 Lithium 、 Battery (electricity) 、 Composite material 、 Delamination 、 Materials science 、 Position (vector)
摘要: A spirally-wound LG 18650 MJ1 lithium-ion battery was imaged in 3D before and after 1061 cycles using X-ray computed tomography. The battery's capacity had faded to 79% of its initial value some that fade attributed delamination the innermost region ‘jelly-roll’ structure. method for virtually unrolling jelly-roll analysing it different coordinates is presented. allows efficient comparison position shape electrodes at times highlights imperfections present cycling which were shown nucleate electrode.
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