Characterization of the Depth of Discharge-Dependent Charge Transfer Resistance of a Single LiFePO4 Particle
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A new technique for measuring a key discharge property of a single particle from a lithium battery electrode has been demonstrated.
Because they can pack a lot of energy into a small volume, lithium batteries are used to power everything from mobile devices to electric vehicles. To increase their power and energy-storage capacity, it is vital to accurately determine their charging and discharging properties as a function of their state of discharge. However, the composite nature of electrodes makes this challenging since the various components are unevenly distributed and charged particles can take complex paths as a result.
Now, a team led by researchers from Kanazawa University in Japan has developed a technique that can measure the charge/discharge properties of a single particle. The team employed a micropipette to essentially create a battery in miniature on an electrode surface, and they used it to characterize a single particle of an active electrode component.
- Analytical Chemistry 93, 14448−14453 (2021). doi: 10.1021/acs.analchem.1c02851
|Kanazawa University (KU), Japan||0.56|
|DENSO Corporation, Japan||0.22|
|Aichi Institute of Technology (AIT), Japan||0.11|
|Tokyo Metropolitan University (TMU), Japan||0.11|