In November 2015, the US Patent and Trademark Office announced a new patent related to solid-state battery charging technology, this time in solid-state battery charging technology for portable devices. In fact, since 2012, Apple has actively begun to lay out patents for all-solid-state battery technology. It is expected to use this new battery with high energy density, high security and flexibility potential for iPad, MacBook and other devices. Development on flexible electronic devices. So what kind of technology is the all-solid-state battery in the end, which will cause the focus of Apple? What is an all solid state battery? If it is popular, an all-solid-state battery is a battery that has no gas, no liquid, and all materials are in solid form. Considering that the most common battery in people's daily life is a lithium-ion battery, we will default to "all-solid-state lithium-ion battery" as a representative of all-solid-state batteries (temporarily ignore new batteries such as all-solid lithium-sulfur). This article will also highlight all aspects of all-solid-state lithium-ion batteries (hereafter referred to as "all-solid-state batteries") for the reader. Generally, a lithium ion battery is mainly composed of a positive electrode, a negative electrode, a separator, an electrolyte, a structural shell, and the like, wherein the electrolyte allows current to be conducted in the form of ions inside the battery. Electrolyte technology is one of the core technologies of lithium batteries, and it is also a high profit component of the battery industry. Schematic diagram of a lithium ion battery in which Li+ (lithium ion) is conducted in an internal circuit through an electrolyte However, many readers may have discovered that their lithium batteries will swell for a long time, and in the case of more extreme small probability events, some may even be dangerous (such as the battery explosion of recent twisted cars, leading to related Production companies and battery companies have encountered comprehensive difficulties). In addition, in general, the current operating temperature range of lithium-ion batteries is limited, the life expectancy will be sharply shortened at temperatures above 40 degrees, and the safety performance will also be very problematic (so the Tesla MODEL S will have a strict battery. The temperature control system is for this purpose). In fact, several of the safety issues mentioned above are directly related to the electrolyte of our current organic systems for batteries. In order to solve the battery safety problem and increase the energy density, the research and industry and the industry are currently developing and producing all-solid-state batteries, that is, replacing the separator and electrolyte of the conventional lithium-ion battery with a solid electrolyte material. So to put it, what are the advantages of all solid-state batteries compared to the most common ordinary lithium-ion batteries in our lives?
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