In recent decades, continuously increasing energy consumption has asserted the crucial need for the progress and development of green and sustainable energy resources. Also, a growing passion has been declared for deploying portable and cordless power tools, as well as implementing eco-friendly transportation. In this era, researchable batteries, especially lithium-ion batteries (LIBs) have received a great deal of attention, resulting from the promising capability in a wide range of devices according to the low atomic weight of lithium metal and so offering the most superior theoretical energy density. Meanwhile, numerous efforts have been devoted to enhancing the energy storage capacity of the LIBs through integrating the electrode substances. Selecting cost-effective cathode architectures with satisfying capacity has been assumed a key challenge in developing LIBs. LiNixMnyCozO2 (NMC) compounds are declared as potential candidates due to their appealing merits, such as high specific capacity, average voltage, environmental friendliness, and stable working voltage. 811, 622, 532, 442, and 333 are different variants of the NMC structures. In these configurations, improved capacity, structural stability, and capacity retention are provided by the Ni, Mn, and Co contents, respectively. Meanwhile, Li/Ni mixing causes a fading in thermal stability and the creation of impurities on the cathode surface. Therefore, a coating modification procedure is suggested to form a protective layer on the NMC compound, which is able to avoid direct electrode-electrolyte contact and boost the stability, durability, and safety where the cathode is subjected to repeated charging and discharging cycles. Additionally, the coating can maintain the electrical path and good physical contact between the electrode material and conductive carbon upon volume expansion and contraction. Metal oxides, such as TiO2, Al2O3, ZrO2, MoO3, and so forth, are some of the most common NMC coating materials. Among a diverse range of oxides, Al2O3 stands out as a communal coating substance because it is an abundant and non-toxic metallic element. Through the interaction of LiPF6/Al2O3, LiPO2F2 electrolyte additive is produced. The fluorine atoms in the LiPO2F2 form strong bonds with the lithium ions, which can help to prevent the release of oxygen and other gases during thermal runaway events. Additionally, the electrolyte conductivity is increased, leading to the battery efficiency enhancement and delivering more power over a shorter period of time. Moreover, Al2O3 is able to scavenge hydrofluoric acid (HF) and protect the cathode against HF attacks, and so hinder severe reactions with the electrolyte. According to the literature, the battery performance could be efficiently enhanced through the addition of an Al2O3 oxide layer on various NMC types, such as 811, 532, and 333. MoO3 is also an emerging coating oxide, suggested for further improvement of NMC surfaces due to the presence of van der Waals attraction forces in the MoO3 layered structure, which enhances the lithium insertion and extraction. Furthermore, MoO3 can play the HF scavenger role and provide a more durable electrode-electrolyte interface during high-voltage operations. For example, the capacity retention of NMC811 could be effectively improved from 85.8% to 92.5% after 100 cycles through the introduction of a MoO3 coating layer. Hence, the main intention of this study is to probe the effect of the versatile Al2O3 and MoO3 metal oxide coating layers on the NMC811 cathode substrate using the plasma-enhanced atomic layer deposition (PEALD). Here, we revealed the extra energy capacity, more stability, and long-lifetime durability well beyond the present electrochemical devices, which illustrates a forward step for spinel electrodes in capable energy storage. Accordingly, it was discovered that the side reactions between the cathode and the electrolyte could be diminished during battery cycling using the Al2O3 coating. Therefore, the chemical reduction of the Ni and Mn elements in the cathode material could be eliminated, resulting in a decrease in the reduced Ni and Mn dissolution into the electrolyte and reversible cycling of the employed cathode substance.