期刊
ADVANCED MATERIALS
卷 29, 期 48, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201605807
关键词
beyond-lithium-ion batteries; cathode materials; energy density; lithium-ion batteries; surface coating technology
类别
资金
- Australian Research Council (ARC) [DP160102627]
- Automotive CRC
- UNIST (Ulsan National Institute of Science and Technology) [1.160033.01]
- Ministry of Trade, Industry AMP
- Energy/Korea Evaluation Institute of Industrial Technology (MOTIE/KEIT) [10046306]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10046306] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 degrees C with highly loaded electrodes (approximate to 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.
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