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Publication Type : Journal Article
Source : Advanced Materials, 2017
Url : https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201605807
Campus : Amaravati
School : School of Engineering
Department : Electronics and Communication
Verified : No
Year : 2017
Abstract : Cathode material degradation during cycling is one of the key obstacles to upgrading lithium-ion and beyond-lithium-ion batteries for high-energy and varied-temperature applications. Herein, we highlight recent progress in material surface-coating as the foremost solution to resist the surface phase-transitions and cracking in cathode particles in mono-valent (Li, Na, K) and multi-valent (Mg, Ca, Al) ion batteries under high-voltage and varied-temperature conditions. Importantly, we shed light on the future of materials surface-coating technology with possible research directions. In this regard, we provide our viewpoint on a novel hybrid surface-coating strategy, which has been successfully evaluated in LiCoO2-based-Li-ion cells under adverse conditions with industrial specifications for customer-demanding applications. The proposed coating strategy includes a first surface-coating of the as-prepared cathode powders (by sol–gel) and then an ultra-thin ceramic-oxide coating on their electrodes (by atomic-layer deposition). What makes it appealing for industry applications is that such a coating strategy can effectively maintain the integrity of materials under electro-mechanical stress, at the cathode particle and electrode- levels. Furthermore, it leads to improved energy-density and voltage retention at 4.55 V and 45 °C with highly loaded electrodes (≈24 mg.cm−2). Finally, the development of this coating technology for beyond-lithium-ion batteries could be a major research challenge, but one that is viable.
Cite this Research Publication : S. Kalluri, M. Yoon, M. Jo, H.K. Liu, S.X. Dou, J. Cho, Z. Guo, Feasibility of cathode surface coating technology for high-energy lithium-ion and beyond-lithiumion batteries. Advanced Materials, 2017, 29, 1605807. (I.F. = 30.849)