材料科学
阴极
涂层
阳极
电化学
氧化物
镍
锂(药物)
石墨
氧化镍
化学工程
退火(玻璃)
表面改性
纳米技术
复合材料
冶金
电极
化学
物理化学
内分泌学
工程类
医学
作者
Bang‐Sup Song,Wangda Li,Seungmin Oh,Arumugam Manthiram
标识
DOI:10.1021/acsami.7b00070
摘要
As nickel-rich layered oxide cathodes start to attract worldwide interest for the next-generation lithium-ion batteries, their long-term cyclability in full cells remains a challenge for electric vehicles. Here we report a long-life Ni-rich layered oxide cathode (LiNi0.7Co0.15Mn0.15O2) with a uniform surface coating of the cathode particles with Li2ZrO3. A pouch-type full cell fabricated with the Li2ZrO3-coated cathode and a graphite anode displays 73.3% capacity retention after 1500 cycles at a C/3 rate. The Li2ZrO3 coating has been optimized by a systematic study with different synthesis approaches, annealing temperatures, and coating amounts. The complex relationship among the coating conditions, uniformity, and morphology of the coating layer and their impacts on the electrochemical properties are discussed in detail.
科研通智能强力驱动
Strongly Powered by AbleSci AI