cu 3 pt copper mesh-lithium metal electrode and its preparation method and lithium battery preparation method

Abstract

Cu 3 Pt copper mesh-lithium metal electrode and its preparation method and lithium battery preparation method, including that the electrode is a three-dimensional porous frame structure, and the electrode includes Cu 3 Pt copper mesh and lithium metal foil; the lithium metal foil is fully embedded in the Cu3Pt copper mesh; the Cu 3 The Pt copper mesh includes Cu-based current collectors and Cu 3 Pt coating, the outer surface of the Cu-based current collector is evenly coated with the Cu 3 Pt coating; Cu 3 Pt copper mesh with ultra-rough surface; synthesis of chloroplatinic acid mixed solution; synthesis of Cu 3 Pt copper mesh; electrode preparation; the present invention can quickly and simply wrap a layer of Cu on the outer wall of the copper mesh through electroplating displacement reaction 3 Pt alloy, thus making Cu 3 Pt copper mesh has an ultra-rough surface and thus a considerable surface area; Cu 3 Pt atoms in Pt can combine with Li (i.e. Cu 3 The Pt atom in Pt can be lithiated), which has a high affinity with Li. Therefore, Cu 3 The Pt‑Cu mesh reduces the nucleation overpotential of Li metal.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and particularly relates to Cu 3 Pt copper mesh-lithium metal electrode and its preparation method and lithium battery preparation method. Background technique [0002] Lithium-ion batteries (LIBs) are state-of-the-art energy storage technologies for portable devices, energy storage systems, and electric vehicles. However, lithium ions (Li + ) chemistry inherently limits Li-ion batteries to meet the rapidly growing demand for ultra-high-energy-density rechargeable batteries. [0003] Lithium metal as an anode is considered to be a breakthrough in the current bottleneck of low energy density and is considered to be an ideal anode material due to its extremely high theoretical specific capacity (3860mAhg). -1 ) and lower electrochemical potential (-3.040V with standard hydrogen electrode). However, the uncontrolled dendrite formation of Li metal anodes during repeated charge-disch...

AI Technical Summary

Problems solved by technology

However, the introduction method of this graphene-based lithiophilic material is complicated and time-consuming, and is not suitable for large-scale production.

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