A kind of thin-film all-solid-state battery in series
An all-solid-state battery and thin-film technology, which is applied in the direction of secondary batteries, electrolyte battery manufacturing, non-aqueous electrolyte batteries, etc., can solve the problems of limited application and low energy density, reduce volume and weight, increase energy density, and facilitate technology The effect of renewal and commercial promotion
Active Publication Date: 2020-08-11
SHANGHAI INST OF SPACE POWER SOURCES
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Problems solved by technology
[0003] Despite the above advantages, the current low energy density per unit area of thin-film all-solid-state lithium batteries limits its further application.
Method used
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Embodiment 1
[0033] An internal series thin-film all-solid-state battery with a voltage of 7.4V was prepared. The all-solid-state thin-film battery contains two 3.7V all-solid-state thin-film single lithium batteries. By connecting the two all-solid-state thin-film single batteries in series, the voltage of the internal series-connected thin-film all-solid-state battery is increased to 7.4V.
[0034] Such as figure 1As shown, the internal tandem thin-film all-solid-state battery of Example 1 includes: a substrate 10; a first positive electrode current collector layer 21, a first positive electrode active material layer 31, and a first electrolyte layer located on the first side of the substrate 10 and arranged in sequence. 41 and the first negative electrode active material layer 51; the second positive electrode current collector layer 22, the second positive electrode active material layer 32, the second electrolyte layer 42 and the second negative electrode active material 52 located on...
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Abstract
The invention discloses an internal series thin-film all-solid-state battery, which comprises: a substrate; a first positive electrode layer, a first electrolyte layer and a first negative electrode layer located on the first side of the substrate and arranged in sequence; located on the second side of the substrate. The second positive electrode layer, the second electrolyte layer, and the second negative electrode layer arranged in sequence; wherein, the second positive electrode layer extends from the second side of the substrate to the first side of the substrate, and is connected with the The above-mentioned first negative electrode layer is partially overlapped and connected. The invention adopts the internal series process to package the thin-film all-solid-state batteries on both sides of the substrate in series in a whole, so that its working voltage is doubled compared with the battery prepared on one side of the substrate; the thin-film all-solid-state batteries on both sides of the substrate share one substrate, reducing the The volume and weight have improved the energy density; during the preparation process, the thin-film all-solid-state batteries on both sides of the substrate are carried out simultaneously, which is highly consistent with the existing process, which is convenient for technology update and commercial promotion.
Description
technical field [0001] The invention relates to the technical field of solid-state batteries, in particular to an internal series thin-film all-solid-state battery. Background technique [0002] Among the existing energy storage technologies, lithium-ion batteries have been widely used in consumer electronics products due to their advantages such as high energy density, high working voltage, long service life and no memory effect. However, traditional lithium-ion batteries use flammable liquid organic electrolytes, which have potential safety hazards and have encountered bottlenecks in development. Using solid-state electrolytes instead of organic liquid electrolytes, the new all-solid-state lithium batteries are not only safe, but also have more room for improving specific energy, specific power density, and cycle performance, and are expected to become the next generation of lithium-ion batteries. Among the existing all-solid-state lithium batteries, the preparation proce...
Claims
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IPC IPC(8): H01M4/78H01M4/13H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 汤卫平刘通吴晓萌吴勇民
Owner SHANGHAI INST OF SPACE POWER SOURCES