Lithium di-ionic total battery using mixed carbon material as positive and negative electrodes

Abstract

The invention discloses a preparation method of a lithium di-ionic total battery using a mixed carbon material as positive and negative electrodes. The method comprises the following steps: firstly preparing the mixed carbon material; then using the mixed carbon material to prepare the mixed carbon positive and negative electrodes, and then preparing a lithium salt electrolyte; and finally assembling the mixed carbon positive and negative electrodes and the lithium salt electrolyte to form the total battery. The carbon material used for the positive and negative electrodes is easy to get and is cheap and environmentally friendly, the mixed carbon material is mixed from various carbon materials, the structure is stable, the mixed carbon material is not consumed or lost in the charge-discharge process, the long-term cycling stability is high, and the rate capability is excellent.

Description

technical field

[0001] The invention relates to the field, in particular to a lithium double-ion full battery using mixed carbon materials as positive and negative electrodes. Background technique

[0002] Lithium-ion batteries (LIBs) are ubiquitously used in portable electronics and network storage due to their relatively high discharge voltage, energy density, and good power performance. With the progress and demands of modern science and technology, the development of new rechargeable battery systems with high energy density and low cost has received more and more attention. Lithium-ion batteries currently on the market generally use lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, and ternary materials as positive electrode materials. These materials are expensive, making lithium-ion batteries costly. Furthermore, due to reasons such as the organic electrolyte system, the internal resistance of the battery is relatively large, and it cannot be disc...

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