High-specific-area carbon/metallic oxide composite electrode material of lithium battery, electrode and preparation methods for high-specific-area carbon/metallic oxide composite electrode material and electrode
A high specific surface area, composite electrode technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of low cycle life, low capacity stability, etc., to improve uniformity, increase structural stability, and improve capacity reversibility and stability effects
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[0028] al 2 o 3 The preparation process of the adhesive layer is:
[0029] 1. Put graphene powder in the ALD reactor, then inject TMA reaction gas into the reaction vessel until the air pressure reaches 1Torr, then close all reactor valves and let it stand for 90-180 seconds, preferably 120 seconds;
[0030] 2. Vacuumize to 0.1 Torr to discharge excess TMA, and let stand for 90-180 seconds, preferably 120 seconds;
[0031] 3. Inject water vapor until 1Torr. Then close the valves of all reactors and let stand for 120 seconds;
[0032] 4. Vacuum the excess water until the air pressure reaches 0.1 Torr, and let it stand for 90-180 seconds, preferably 120 seconds.
[0033] The above four steps 1-4 are called an ALD cycle. Typical Al 2 o 3 The growth rate was 1.1 to 1.2 angstroms per cycle. The number of cycles can be determined according to the needs, so that Al 2 o 3 The thickness is about 0.1-0.5nm. ALD growth is in the range of 120-180°C. The reaction furnace is rot...
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