Scientists identify another reason why batteries can't charge in minutes

Author: mdp2021

Score: 3

Comments: 2

Date: 2021-12-03 08:00:57

Web Link

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mdp2021 wrote at 2021-12-03 08:06:17:

_A new study ... seeks to identify the reasons that cause the performance of fast charged lithium-ion batteries to degrade in electric vehicles. In lithium-ion batteries, however, the graphite [the anode] is assembled out of small particles[: i]nside these particles, the lithium ions can insert themselves in a process called intercalation. When a battery is charged too quickly ... the lithium ions tend to aggregate on top of the anode's surface, resulting in a "plating" effect that can cause terminal damage ... The anode itself undergoes some degree of irreversible expansion, impairing battery performance._

Original research paper: Saran Pidaparthy et al, _Increased Disorder at Graphite Particle Edges Revealed by Multi-length Scale Characterization of Anodes from Fast-Charged Lithium-Ion Cells_, Journal of The Electrochemical Society (2021)

http://dx.doi.org/10.1149/1945-7111/ac2a7f

causi wrote at 2021-12-03 10:06:59:

This is why I never use those absurdly high-wattage phone chargers, even when my phone is compatible.