March 3, 2026

Electrochemical Lithiation of Nickel Phyllosilicate Nanoscrolls in the 0.01–4.5 v Voltage Range

Key Points

Electrode capacity decreases significantly during lithium insertion, indicating challenges in maintaining electrochemical activity.
First cathodic polarization damages the crystal structure of nickel phyllosilicate, leading to the formation of nickel oxide.
Analysis of electrochemical reactions reveals transitions of nickel oxide from cubic LiNiO to hexagonal LiNiO over time.
Understanding these processes highlights the need for better electrode materials and designs in lithium-ion batteries.

Abstract

Here, we study processes of Li insertion into NiSiO(OH) phyllosilicate nanoscrolls in the 0.01–4.5 V voltage range aiming to establish electrochemical reactions and reveal the reasons of electrode degradation. The first cathodic polarization initiates the phyllosilicate crystal structure destruction with formation of NiO, and probably SiO and Si, capable of reversible interaction with lithium. As cycling proceeds, the electrode capacity decreases, and the cathodic/anodic processes voltages change. The main cause of the degradation of nickel phyllosilicate-based electrodes is a decrease in the electrochemical activity of nickel oxide and its gradual transition first to cubic LiNiO and then to hexagonal LiNiO.

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Cite This Study

D.A. Krasilina (Wed,) studied this question.

synapsesocial.com/papers/69a75d27c6e9836116a26b5f https://doi.org/https://doi.org/10.7868/s3034618525090064

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