What are the electrochemical properties of Klason lignin, and how were they characterized in the study?

Label:chem

Topic
The electrochemical properties of a material are crucial for its application in batteries. These properties include specific capacity, conductivity, and the nature of electrochemical reactions. Various techniques such as impedance spectroscopy, cyclic voltammetry, and galvanostatic discharge can be used to characterize these properties.
Answer
The electrochemical properties of Klason lignin were characterized using several techniques. The conductivity of Klason lignin was found to be 10–9S cm–1, indicating it is an insulator. The specific capacity of the Li/KL cell reached 380mAh g–1 at a current density of 25mA g–1. The galvanostatic discharge curve showed two voltage plateaus, corresponding to different electrochemical reactions involving carbonyl and hydroxyl groups. Cyclic voltammetry confirmed these reactions, with peaks at 2V, 1.4V, and 0.7V corresponding to interactions with different functional groups in lignin.
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