Suppressed Microcracking and F Penetration of Ni-Rich Layered Cathode via the Combined Effects of Titanium Dioxide Doping and Coating
Source abstract
Abstract
To understand the effect of heat treatment of TiO2 modification for Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode, the TiO2 coating layer is formed on the surface of LiNi0.8Co0.1Mn0.1O2 cathode by heat treatment at 500 and 600 °C. The electrochemical results show that TiO2-modified LiNi0.8Co0.1Mn0.1O2 shows higher electrochemical performances compared to pristine sample. Among them, the TiO2-modified LiNi0.8Co0.1Mn0.1O2 heat-treated at 500 °C delivers not only the highest initial discharge capacity of 201.3 mAh g–1 but also the extraordinary rate capability (86.4% at 6.0C). Moreover, TiO2-modified LiNi0.8Co0.1Mn0.1O2 can effectively stabilize the cycling performance at 25 °C (79.4% after 100 cycles at 0.5C). Consequently, the TiO2-modified LiNi0.8Co0.1Mn0.1O2 by heat treatment at 500 °C can significantly improve the electrochemical performances due to facilitating Li-ion migration, working as a protective layer and inhibiting the irreversible phase transition.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Advanced Materials Engineering, Daejeon University, Daejeon 34520, Republic of Korea
Battery Research Center, Korea Electrotechnology Research Institute, Changwon 641-120, South Korea
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