Journal
CHINESE PHYSICS B
Volume 25, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1056/25/1/018210
Keywords
lithium ion batteries; open circuit voltage; Fermi energy level; electrochemical potential
Categories
Funding
- National Natural Science Foundation of China [51325206, 51372228]
- National Basic Research Program of China [2012CB932900]
- Shanghai Pujiang Program, China [14PJ1403900]
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The physical fundamentals and influences upon electrode materials' open-circuit voltage (OCV) and the spatial distribution of electrochemical potential in the full cell are briefly reviewed. We hope to illustrate that a better understanding of these scientific problems can help to develop and design high voltage cathodes and interfaces with low Ohmic drop. OCV is one of the main indices to evaluate the performance of lithium ion batteries (LIBs), and the enhancement of OCV shows promise as a way to increase the energy density. Besides, the severe potential drop at the interfaces indicates high resistance there, which is one of the key factors limiting power density.
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