What is the difference between lithium metal battery and lithium ion battery?

Lithium ion battery is a secondary battery (rechargeable battery), which mainly relies on lithium ions moving between the positive and negative electrode. In the process of charging and discharging, Li + embeds back and forth between the two electrodes and embeds off: while charging, Li + embeds from the anode, goes through electrolyte and embeds in the cathode, so that the negative electrolyte is in the rich lithium state; Discharge state has the opposite condition.

(1) the positive active material is commonly or cobalt acid lithium manganese acid lithium nickel manganese cobalt acid lithium materials, electric bicycle is common to use lithium cobalt nickel manganese acid (commonly known as the three yuan) or three yuan plus a small amount of manganese acid lithium, pure manganese acid lithium and lithium iron phosphate is due to the large size, high performance is bad or cost gradually fade out. Conductive extremely fluid using 10-20 microns thickness electrolysis aluminum foil.

(2) - a specially shaped diaphragm polymer thin film, film have a microporous structure, can let the lithium ions through freely, and electronic cannot pass.

(3) negative - active substances for graphite, or approximate graphite carbon structure, fluid using conductive set of electrolytic copper foil thickness 7 to 15 microns.

(4) dissolved organic electrolyte - six fluoride phosphate lithium carbonate solvent type, use the gel polymer electrolyte.

(5) battery shell, divided into steel shell (square) is rarely used, aluminum, nickel plated iron shell (cylindrical battery), aluminum-plastic film (flexible packaging) and so on, and battery blocks, and are negative terminal of the battery.

Metal the lithium battery what is the difference between and lithium ion battery?

The working principle of the lithium ion battery

Lithium ion batteries with carbon as negative material, with lithium compounds as positive, no metal lithium exists, only lithium ion, this is the lithium ion battery. Lithium ion battery refers to the floorboard of the lithium ion embedded compounds as the anode material battery. Lithium ion battery charge and discharge process, is the embedded lithium ion and embedded process. Embedded in lithium ion and embedded process, at the same time with lithium ion equivalent embedded electronic and embedded off (habit to use embedded or embedded said, on the positive and negative) inserted with insert or take off., in the process of charging and discharging lithium ion in the back and forth between positive and negative electrode embedded/embedded and insert/take off the plug, vividly called "rocking-chair batteries".

When charging the battery, the battery has lithium ions generated in the anode, the generated lithium ions through the electrolyte to the negative movement. As a cathode carbon layer structure, it has many pores, reach the cathode of lithium ion is embedded into the microporous carbon layer, the embedded lithium ion, the more the higher the charge capacity. Also, when to discharge the battery (i.e., we use the battery process), embedded in the cathode carbon layer of emergence, lithium ions and movement back to the anode. Back to the anode of lithium ion, the more the higher the discharge capacity.

General lithium battery charging current settings are between 0.2 C and 1 C, the greater the current, the faster the charging, also the bigger the battery heating. Moreover, large current charging, capacity is not full, because inside the battery electrochemistry reaction takes time. Just like beer, fall too fast will produce bubbles, instead.

What is the difference between metal lithium battery and lithium ion battery?

Lithium ion batteries

1) High voltage

Monomer battery voltage up to 3.7-3.8 V (lithium iron phosphate is 3.2 V), the Ni - Cd, Ni MH battery 3 times.

2) It is larger than the energy

Can achieve the actual than the energy of 555 Wh/kg, the material can reach more than 150 mAh/g specific storage (3-4 times the Ni - Cd, 2 -- 3 times the Ni MH), are close to the theoretical value of about 88%.

3) Long cycle life

Generally all can reach more than 500 times, even more than 1000 times, of the lithium iron phosphate can reach more than 2000 times. For small discharge current of electric equipment, battery life, will increase the competitiveness of the appliances.

4) Good safety performance

It has pollution-free, no memory effect. As Li - ion predecessor of lithium batteries, dendrite short circuit formed by the metal lithium is easy, reduced its areas of application: Li - ion in do not contain cadmium, lead, mercury and other elements of environmental pollution: some process (such as sintering type) of the one big drawback of Ni - Cd battery exist for "memory effect", it severely battery, but Li - ion this aspect of the problem doesn't exist.

5) Uniformity

Charge of Li - ion storage at room temperature after 1 month of self-discharge rate was 2%, much lower than 25-30% of Ni - Cd, Ni - 30-35% of MH.

6) Quick charge

1 c charge 30 minutes capacity can reach more than 80% of the nominal capacity, phosphorus iron battery charge can reach 10 minutes to 90% of the nominal capacity.

7) Operating temperature

Working temperature is 25 ~ 45 ° C, with the improvement of the electrolyte and the anode, expected to widen to - 40 ~ 70 ° C.

What is the difference between metal lithium battery and lithium ion battery?

Lithium ion battery shortcomings

Aging

Unlike other rechargeable batteries, lithium ion battery capacity will be slow to recession, is associated with use, can also be related to temperature. The recession phenomenon can be expressed in capacity decreases, can also be expressed in internal resistance increases.

The recovery rate of

About 1% of the ex-factory product needs to recycle because of various reasons.

Intolerance overcharge

When charging, excessive embedded lithium ion can permanently fixed in the lattice, can't release, which can lead to short battery life.

Intolerance is installed

After discharge, electrodes embedded excess lithium ion, which can lead to the collapse of the lattice, thus shortens life.

What is the difference between metal lithium battery and lithium ion battery?

Metal lithium battery

Lithium-ion batteries with lithium metal as an electrode energy storage battery, high specific energy, early into disposable batteries and rechargeable lithium battery, but after the accidents occurred in rechargeable lithium batteries, civil is rare on the market for rechargeable lithium batteries. Lithium ion rechargeable battery is actually using lithium ion concentration difference in energy storage and discharge, and there is no metallic lithium batteries.

Metal lithium battery as the principle of ordinary dry cells, it is to use metallic lithium as electrode, through the corrosion of metallic lithium or called oxidation to produce electricity, out of waste, not charging.

Metallic lithium battery and lithium ion battery

The main difference is that metal lithium battery is disposable battery. Lithium ion battery is rechargeable batteries! Metal lithium battery has the same principle as ordinary dry cells. It uses metallic lithium as electrode. Produce electricity through the corrosion of metallic lithium or which is called oxidation. It is out of waste and cannot charge after usage; Lithium ion batteries generally use cobalt acid lithium as anode, carbon as negative electrode, and use electrolyte ions to fill the electrolyte and form an ion channel, using the diaphragm is to separate the anode and cathode to prevent short circuit. During charging, electric lithium ion goes from the cobalt acid lithium, goes through the pore, reaches negative electrode and has reaction with carbon to get lithium carbide; Discharge process is different from the above. Lithium ion comes back to the positive electrode, which is the charging and discharging process of lithium ion battery.

The page contains the contents of the machine translation.