Whether lithium battery is the best choice in the future battery field
Published:
2019-05-23
Whether lithium battery is the best choice in the future battery field
As a device for converting chemical energy into electrical energy, the battery has been developed from the "Leyden Bottle" in 1746 to nearly 20 species. In recent years, new types of batteries that have received market attention are emerging.
For example, a hydrogen fuel cell can generate electricity in a state close to zero carbon emissions by separating electrons in hydrogen gas to generate electric current. Many governments and automobile companies also support the development and application of hydrogen fuel cells.
At the beginning of this year, the US hydrogen fuel cell giant Plug Energy was once sought after, and its stock price was ups and downs. "Although hydrogen fuel cells give the market a good expectation of green environmental protection, from the perspective of actual development speed and promotion, it has been a concept stage in recent years." A senior battery industry expert told reporters.
Coincidentally, this kind of pie-like imagination also exists in supercapacitors. More details Howard Dump Truck http://www.truck-trade.net
As a power source with special performance between the traditional capacitor and the battery, the super capacitor has the advantages of fast charge and discharge speed and long cycle times. Also for environmental reasons, buses with supercapacitors and innocent trams are being planned for mass promotion in multiple cities. There are many opinions that with the advancement of technology, super capacitors will be able to replace batteries.
The supercapacitor expert told reporters that there is a misunderstanding of the ability of the supercapacitor. Taking new energy vehicles as an example, supercapacitors can usually compensate for peak power during vehicle start-up and acceleration. But the key to determining the cruising range of electric vehicles is lithium batteries. In the current situation, supercapacitors and lithium batteries exist in a complementary relationship, and no one can replace anyone. For a long time in the future, the energy density of supercapacitors cannot be compared with lithium batteries.
The industrialization of fuel cells and supercapacitors is not high, and traditional dry batteries, lead-acid batteries, nickel-chromium-nickel-metal hydride batteries have serious environmental pollution and low service life. Therefore, in the future for a considerable period of time, lithium batteries that are relatively balanced in all aspects will still be the best choice in the future battery field.
The rapid development of global electric vehicles will further detonate the demand for lithium batteries. For example, in the Tesla MODEL S model, the sales volume in 2012 was 22,400 units, which was calculated based on an average of 70 kWh per vehicle. In 2013, the total power reached 1.5 million kWh, and the annual demand for global smartphone lithium batteries. The total power is 9.09 million kWh, and only one Tesla battery accounts for 16% of the smartphone battery.
According to a report released last month by Navigant Research, the stable and reliable performance of lithium batteries has made them increasingly used in battery-powered and plug-in hybrid vehicles. In the next decade, the global demand for lithium batteries will surge, and the annual market value will increase, and will grow to 26 billion US dollars by 2023.
According to China's "Energy Conservation and New Energy Vehicle Industry Development Plan (2012-2020)", by 2015, the cumulative production and sales of pure electric vehicles and plug-in hybrid vehicles will reach 500,000 units, according to which energy is required. The power battery module will reach 15 billion watt-hours/year and the power type will be 3 billion watt-hours/year. In 2012, China's lithium battery industry reached 55.68 billion yuan, and is expected to reach 125.15 billion yuan in 2015, which will continue to develop at a high speed.
Although, the future development trend of lithium batteries is generally upward. There is also a structural overcapacity. In particular, domestic low-end lithium batteries are killing fiercely. On the other hand, lithium batteries with high quality and high technology content are in short supply. This polarization means that the seemingly mature lithium battery still has a lot of room for technological advancement.
For lithium battery raw material manufacturers, in addition to the breakthrough innovation of positive and negative materials, lithium battery electrolyte will become another key point of breakthrough.
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