涂层
电化学
锂(药物)
阴极
X射线光电子能谱
离子
材料科学
兴奋剂
化学工程
导电体
纳米技术
化学
复合材料
电极
物理化学
光电子学
有机化学
工程类
内分泌学
医学
作者
Tahir Sattar,Seong-Ju Sim,Seok‐Gwang Doo,Bong‐Soo Jin,Hyunsoo Kim
标识
DOI:10.1016/j.ssi.2022.116053
摘要
High discharge capacity and low cost of Ni-rich cathode materials make them an ideal candidate for energy storage applications. Here, we report a novel synergetic approach to modify the LiNi0.91Co0.06Mn0.03O2 cathode active material by Li+ conductive Li3BO3 coating and B3+ doping. The crystal structure of synthesized materials is analyzed by XRD and the surface by XPS, FESEM and FETEM. In rate performance test, Li+ conductive coating on modified NCM (LBO-0.05) conduces a superior discharge capacity of 88.6 mAh g−1 at 5C while pristine delivers only 45.8 mAh g−1. LBO-0.05 NCM exhibited the highest initial columbic efficiency (92%) and discharge capacity (215.3 mAh g−1) than the pristine sample (90.7%, 212.6 mAh g−1). At 2C cycling, LBO-0.05 demonstrates improved capacity retention of 79.4% as compared to pristine which shows only 67.3% after 100 cycles. The enhanced electrochemical performance of modified NCM is attributed to multifunctional Li3BO3 coating and B3+ doping.
科研通智能强力驱动
Strongly Powered by AbleSci AI