When a lithium-ion battery is charged, the direction of movement of the lithium ions is: The lithium ions move from the positive electrode to the negative electrode.
When the battery power is connected and the lithium-ion battery is charged, the positive electrode loses electrons and the lithium ions escape from the crystal lattice of the positive electrode material , enter the electrolytic cell and pass through the separator and move towards the negative electrode, and at the same time reach the negative electrode. The lithium ions on the negative electrode are embedded in the negative electrode material, and the electrons also reach the negative electrode through the external circuit. of the negative electrode combine with the embedded lithium ions to form a lithium-carbon interlayer compound.
When the battery is discharged, the reverse process occurs. It can be seen that during the prIn the process of charging and discharging, the movement directions of lithium ions and electrons are consistent. The difference is that lithium ions recoil and. in the circuit. The electrons are transmitted through the external circuit.
Working principle:
Lithium metal batteries generally use manganese dioxide as the positive electrode material, lithium metal or its metal alloy as the negative electrode material, and use a non-aqueous battery with electrolyte solution.
Discharge reaction: Li+MnO2=LiMnO2
Lithium-ion battery:
Lithium-ion batteries generally use metal oxide alloy lithium as cathode material and graphite. as cathode material. Negative electrode materials, batteries using non-aqueous electrolytes.
Reference for the above content: Baidu Encyclopedia - Lithium Battery
Lithium ion batteryThe direction of lithium ion movement during charging This is the movement of lithium ions from the positive electrode to the negative electrode. It integrates lithium ions into carbon (petroleum coke and graphite) to form the negative electrode (traditional lithium batteries use lithium or lithium alloy as the negative electrode). ).
True lithium batteries are rarely used in daily electronic products due to their high risk. Petroleum coke and graphite are used as negative electrode materials, which are non-toxic and have sufficient carbon-embedded lithium ion resources, which overcomes the high activity of lithium and solves the safety problems of lithium batteries. traditional lithium.
Precautions for charging lithium electronic devices
Lithium-ion batteries canbe seen everywhere in people's lives, including various portable electronic products, vehicle GPS, etc. Lithium-ion batteries are becoming an important element in the operation of these tools. Keeping lithium-ion batteries properly charged and discharged can extend battery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect the battery. This means that when charging batteries of digital products such as mobile phones and laptops, it is not necessary to reach the maximum value.