What are the advantages of solid-state batteries

In fact, the volumetric energy density is a very important parameter for batteries. In terms of the scope of use, the requirements from high to low are consumer electronics 'home electric vehicles' electric buses. In layman's terms, the volumetric energy density is high, so the battery of the same quality can be made smaller. The available space in electronic products is often very limited. Nearly 1/3 of the volume and quality of many products (such as mobile phones and tablet computers) have been occupied by batteries, and most manufacturers and consumers hope to further increase the capacity of batteries (new Under the requirements of increased battery life) and compact size (portable and beautiful and easy to design), the lithium cobalt oxide (LCO) battery with high compactness and the highest volume energy density is still the mainstream product. In traditional lithium batteries, separators and electrolytes are used, which together account for nearly 40% of the battery's volume and 25% of its mass. And if they are replaced with solid electrolytes (essentially there are two systems of organic and inorganic ceramic materials), the distance between the positive and negative electrodes (traditionally filled with diaphragm electrolyte, now filled with solid electrolyte) can be shortened to even a few times A dozen micrometers, so that the thickness of the battery can be greatly reduced-so all-solid-state battery technology is the only way to miniaturize and thin batteries. Not only that, many all-solid-state batteries prepared by physical/chemical vapor deposition (PVD/CVD) may have an overall thickness of only tens of microns, so they can be made into very small power devices and integrated into MEMS (Micro Electro Mechanical System). In the category. The ability to make a very small battery is also a major feature of all solid-state battery technology, which can facilitate the battery to adapt to the use of various new small-size smart electronic devices, and at this point, the traditional lithium battery technology is difficult to achieve . At present, a major obstacle to the practical use of many nanomaterials is the large specific surface area and low volume density. As a result, products made from these materials often occupy too much volume under the same mass, that is, the volume energy density is too low, which is completely unsatisfactory. Industrial product requirements. Therefore, it is not difficult to understand why the current research on nanomaterials (battery) materials often chooses not to report these parameters. The second advantage: the prospect of flexibility. All solid-state batteries can be further optimized and turned into flexible batteries, thereby bringing more functions and experiences. In fact, even brittle ceramic materials are often bendable after the thickness is thinner than millimeters, and the material will become flexible. Correspondingly, the flexibility of the all-solid-state battery will be clearly improved after being thinner and lighter. By using appropriate packaging materials (not a rigid shell), the manufactured battery can withstand hundreds to thousands of bending times. The performance is basically not attenuated. In fact, flexible electronic devices represented by various wearable devices are an important direction for the development of next-generation electronic products, and this requires that the components in the product must also be flexible. Therefore, flexible all-solid-state batteries are used in scientific research and industry. , A very promising future star. Not only that, the potential of functionalized all-solid-state batteries is far more than the above flexible batteries. After the optimization of the battery material structure, it can be made into a transparent battery, or a stretchable battery with a stretching range of up to 300%, or it can be integrated with photovoltaic devices. Integrated power generation-storage devices, etc.-there are still many prospects for innovative use of the functions implied by all-solid-state batteries. In this regard, the imagination of scientific researchers and engineers will bring us more and more joy. The third advantage: safer lithium dendrites are generated, and internal short circuits occur, which are the main reasons for battery failure. As an energy storage device, in fact, all batteries cannot be absolutely safe in terms of thermodynamics. However, there are many factors that determine the true safety of a battery in actual use. The influencing factors include the characteristics of the electrode material of the battery, the nature of the electrolyte, and the battery management system in electronic products. At present, the safety of general commercial lithium-ion is the focus of everyone's concern. It should be a more appropriate evaluation to evaluate the safety of current batteries with unsatisfactory ideals. The fourth advantage: Light energy and high density. After the use of all solid electrolytes, the applicable material system of lithium batteries will also change. The core point is that it is not necessary to use lithium-inserted graphite anodes, but use metal lithium as the anode. This can clearly reduce the amount of negative electrode material, so that the energy density of the entire battery is clearly improved. In addition, many new high-performance electrode materials may not have good compatibility with existing electrolyte systems, but this problem can be alleviated to a certain extent after the use of all solid electrolytes. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to use Ni-MH batteries