期刊
ACS APPLIED ENERGY MATERIALS
卷 2, 期 10, 页码 7403-7411出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.9b01414
关键词
nickel-rich cathode materials; synthetic method; rapid coprecipitation; spray drying; lithium-ion batteries
资金
- National Nature Science Foundation of China [51872157]
- Dongguan Core Technology Key Funding Project [2019622119003]
- Shenzhen Key Laboratory on Power Battery Safety Research [ZDSYS201707271615073]
- Shenzhen Technical Plan Project [KQJSCX 20160226191136, JCYJ20170412170911187, JCYJ20170817161753629]
- Special Fund Project for Strategic Emerging Industry Development of Shenzhen [20170428145209110]
- Guangdong Technical Plan Project [2015TX01N011, 2017B090907005]
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01N111]
Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material is one of the most promising cathodes for lithium-ion batteries with high energy density. However, the commonly used synthetic methods for this material are time-consuming and costly, limiting their practical application. Herein, an efficient synthetic method for preparing uniform spherical NCM811 particles was developed by combining rapid coprecipitation and spray drying techniques. The as-obtained NCM displays superior cycling stability and rate capabilities even at harsh conditions, such as high cutoff voltage (4.5 V) or elevated temperature (60 degrees C). Moreover, the NCM811/graphite full cell exhibits a high capacity retention of 94.7% after 200 cycles at 1 C and superior rate capability of 140.9 mAh g(-1) at 10 C. These results demonstrate the commercialization possibility of our developed methods for preparing NCM and other electrode materials, at large scale and low cost.
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