The differences between lithium batteries and lithium-ion batteries are as follows
1 Different principles
Lithium batteries are a type of battery material negative electrode made of metallic lithium. or lithium alloy. Because lithium The chemical properties of metals are very active, which makes the processing, storage and use of lithium metal very demanding on the environment.
The negative electrode of lithium-ion batteries is made of intercalated structural materials such as graphite. In the battery, lithium ions move between the positive and negative electrodes, making it much safer than lithium batteries.
2. Different charging
Lithium batteries are primary batteries and cannot be discharged; Lithium-ion batteries are secondary batteries that can be charged or discharged.
The reaction Li+MnO2=LiMnO2 is irreversiblein the battery, so it can only be discharged. Lithium batteries are disposable batteries.
3. Different reactions
Lithium in lithium batteries directly participates in the reaction, which is an irreversible reaction; lithium ions in lithium-ion batteries participate in the reaction, which is reversible.
Chemical formula of lithium cobalt oxide
100~120Wh/kg. Energy density is the ratio of battery energy to mass, which is slightly lower than other lithium-ion batteries. The specific energy of lithium iron phosphate battery is about 120 ~ 140 wh/kg, and the spatial density is about 200 ~ 250 wh/l.
1. Lithium iron phosphate is a lithium-ion battery electrode material with the chemical formula LiFePO4 (LFP for short). It is mainly used in various lithium-ion batteries. Since the Japanese NTT first revealed the materialolivine structure lithium battery cathode au of AyMPO4 (A is an alkali metal, M is a combination of CoFe: LiFeCoPO4) in 1996, in 1997, John.B.Goodenough and others from the University of Texas in Austin in the group studied in the United States, also reported the reversible transfer of lithium into and out of LiFePO4.
2. Compared with traditional lithium-ion secondary battery cathode materials, LiMn2O4 spinel structure and LiCoO2 layered structure, LiMPO4 has wider raw material sources, is cheaper and has no environmental pollution.
Lithium cobalt oxide is a common cathode material for lithium batteries and its chemical formula is LiCoO2. Lithium cobalt oxide has high energy density and good electrochemical properties and is widely used in electronic products such as mobile phones and laptops.
The chemical formula of lithium cobalt oxide can be expressed as LiCoO2, where lithium (Li) is a metallic element, cobalt (Co) is a transition metal element, and oxygen (O) is a metallic element. a non-metallic element. Lithium cobalt oxide is a compound composed of lithium ions and cobaltate ions. Lithium ions are located at the peaks of the crystal lattice of the cathode material, while cobaltate ions are located at the center of the crystal lattice.
The synthesis methods of lithium cobalt oxide include high temperature solid phase method, sol-gel method, chemical co-precipitation method, etc. Among them, the high temperature solid phase method is one of the most commonly used methods. It mixes raw materials such as lithium compounds, cobalt compounds and oxides at high temperatures and heats them. In response, lithium oxide crystalsum and cobalt were finally obtained.
The electrochemical properties of lithium cobalt oxide are closely related to the charging and discharging performance of the battery. In the battery, lithium ions are released from the positive electrode material and move to the negative electrode material through the electrolyte and separator, thereby realizing the process of charging and discharging the battery. The crystal structure, particle size, morphology and other factors of lithium cobalt oxide will affect its electrochemical performance.
Lithium cobalt oxide is an important cathode material for lithium batteries and its chemical formula is LiCoO2. It has high energy density and good electrochemical properties and is widely used in electronic products.
The advantages of lithium cobalt oxide are:
1.High Energy Density: Lithium Cobalt Oxide has a high energy density, meaning that at the same weight. In this case, more electrical energy can be stored, allowing the battery to have a longer service life.
2. Long service life: Lithium cobalt oxide has a long service life, can adapt to different use environments, and has a long service life. This makes it advantageous in situations where prolonged use is required.
3. Good electrochemical properties: Lithium cobalt oxide has good electrochemical properties, which means it can provide higher discharge voltage and smooth discharge current, making the battery have better performance.
4. Easy to prepare: Compared with other cathode materials, the preparation process of lithium cobalt oxide is relatively simple and easy to carry out in industrial production.she.
5. Environmental protection: The lithium cobalt oxide cathode material does not contain harmful elements such as cadmium and is environmentally friendly.
6. Increased safety: Compared to early lithium batteries, lithium cobalt oxide is safer because it does not produce dendrites, reducing the risk of internal short circuits in the battery.
7. Suitable for high-rate charging and discharging: Lithium cobalt oxide has good performance, that is, it can be charged and discharged quickly. This makes it advantageous in applications where high power is required, such as electric vehicles and mobile devices.
8. Good low temperature performance: Lithium cobalt oxide can still maintain good electrochemical performance in low temperature environments, so it is suitable for use in low temperature environments.cold things.
9. Good self-discharge performance: Lithium cobalt oxide cathode material has a low self-discharge rate, that is, the battery discharges slowly when not in use, but the discharge rate is slow. This allows lithium cobalt oxide batteries to maintain a long lifespan and not require frequent recharging while in use.
10. Good storage performance: Lithium cobalt oxide cathode material has good storage performance and can maintain its performance unchanged for a long time. This makes lithium cobalt oxide batteries suitable for situations where they are not used for long periods of time, such as backup power supplies.