Blended Positive Electrodes for Li‐Ion Batteries: From Empiricism to Rational Design. Issue 1 (11th January 2021)

• Record Type: Journal Article
• Authors: Casas‐Cabanas, Montse; Ponrouch, Alexandre; Palacín, M. Rosa
• Other Names: Noked Malachi guestEditor.; Ben-Yoav Hadar guestEditor.; Keinan Ehud guestEditor.
• Is Part Of: Israel journal of chemistry. Volume 61:Issue 1/2(2021)
• Page Start: 26
• Page End: 37
• Publication Date: 2021-01-11
• Subjects: Lithium-ion batteries -- blended electrodes -- NMC -- LMO -- NCA; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/ijch.202000099
• Languages: English
• ISSNs: 0021-2148

Abstract

Abstract: Physical mixtures ( i. e . blends) of two or more active materials are often used in commercial batteries to achieve better performance than what can be attained with a single component. This approach has been empirically driven and found to result in relevant synergistic improvements that are unfortunately poorly understood at a fundamental level. Indeed, internal redox processes (which induce structural changes in the components) can take place in blended electrodes that are severely influenced by electrode kinetics. These are in turn affected by temperature and also electrode formulation. Despite difficulties ahead, efforts to understand such issues are needed to pave the way for a rational electrode design enabling optimized performance which ideally could be tuned to match specific application requirements. Abstract :