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Updated: May 23, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Dual Intermediates in C-C Coupling Reactions and High-Performance Sodium-Iodine Batteries: In Situ Generated
Ruijie Li1, Kai Li1, Yun Gong1
1Department of Applied Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China.
Abstract:
Na-I2 batteries are a cost-effective alternative to conventional energy storage technologies. However, their development is hindered by highly soluble polyiodides and sluggish redox kinetics. Herein, the issues are solved by a 1,8-dianthraquinone (AQ)-inserted layered double hydroxide (CoNi LDH-AQ) formulated as Co1.65Ni4.35(CO3)1.5(OH)3(AQ)3, whose interlayer channel not only immobilizes polyiodides but also acts as a confined vessel for the C-C couplings of AQ into functionalized quasi-graphene (F-GO). The in situ generated I+ not only promotes the I-/I2/I+ multielectron conversion to boost redox kinetics, eliminate shuttle effect, and achieve superior capacities/lifespans but also accelerates the couplings of AQ with low barriers. The work proposes a two-in-one strategy, which combines inorganic and organic reactions together with the same intermediate. It provides a routine to synthesize quasi-graphene based on the couplings of small organic species in a confined space to suppress aggregation. And the good conductivity of quasi-graphene in turn facilitates electron transfer in Na-I2 batteries.
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