Recently, we reported a core–shell-structured Li [ (Ni 0.8 Co 0.1 Mn 0.1) 0.8 (Ni 0.5 Mn 0.5) 0.2]O 2 (ref. 9) material designed to improve the cycle life and safety of lithium batteries.
Considering the fact that LIB is prone to be short-circuited, shell material with lower strength is recommend to select such as material #1 and #2. It is indicated that the high strength materials are not suitable for all batteries, and the selection of the shell material should be matched with the safety of the battery. Table 3.
Many efforts have been made to exploit core–shell Li ion battery materials, including cathode materials, such as lithium transition metal oxides with varied core and shell compositions, and lithium transition metal phosphates with carbon shells; and anode materials, such as metals, alloys, Si and transition metal oxides with carbon shells.
Core-shell structures show a great potential in advanced batteries. Core-shell structures with different morphologies have been summarized in detail. Core-shell structures with various materials compositions have been discussed. The connection between electrodes and electrochemical performances is given.
Herein, we report a novel design of litchi-structural Si@C nanoparticles (L-S Si@C) as long cycle life anode material for lithium–ion battery.
Core-shell materials for lithium-sulfur batteries Apart from LIBs, core-shell structures are also employed in LSBs to improve their electrochemical performances. LSBs are promising electrochemical devices for future energy storage due to their high theoretical capacity (1675 mA h g −1) and high energy density (2600 W h kg −1) , , .