Construction of energy storage interface

How does a modified SEI layer improve electrochemical properties?

By comparation, the components of the modified SEI layer consist of rich-LiF and Li-Ag alloys, which not only availably restrain side reactions, but also enable the homogeneous Li + ions flux with free of lithium dendrite, thus resulting in improved electrochemical properties. Fig. 4.

Why is the cathodic interface complex?

The cathodic interface is complex due to low electronic conductivity, poor contact, and electrochemical instability. Firstly, it causes changes in the volume of the cathode electrodes.

Can interface modification improve electrochemical compatibility between cathode and OSE?

At present, many effective solutions have been proposed to solve these problems, and the interface modification of the inorganic buffer layer, inorganic coating, polymer buffer layer, etc. is considered to be a promising strategy to inhibit the interdiffusion of elements and improve the electrochemical compatibility between cathode and OSEs.

How can OSes/electrode interfaces be optimized?

To address the challenges of poor solid contact, stress failure, and interfacial side reactions, strategies to optimize the OSEs/electrode interface include interfacial wetting agents, the introduction of an interfacial buffer layer, and the construction of a structured electrode by constructing a 3D porous skeleton. 4.1. Interfacial modification

What are the adsorption energies between TFSI and other electrolyte components?

The adsorption energies between TFSI − and other electrolyte components are further estimated by density functional theory (DFT). As exhibited in Fig. 2g, TFSI − mainly interacts with hydrogen atoms in PEO and the adsorption energies is 0.29 eV.

Why is multi-scale characterization important in battery Interphase Engineering?

The ability to correlate these properties with electrolyte composition and cycling performance underscores the importance of multi-scale characterization in understanding and optimizing battery interphases. These results open exciting opportunities for both experimental and theoretical advancements in interphase engineering.