Self-Sacrificing Template of the POMs-Based Composite for the High-Performance Organic-Inorganic Hybrid Cathode of Lithium-Ion Batteries

Feng-Cui Shen; Can Guo; Sheng-Nan Sun; Zhen Lei; Ya-Qian Lan

doi:10.1021/acs.inorgchem.2c01154

Self-Sacrificing Template of the POMs-Based Composite for the High-Performance Organic-Inorganic Hybrid Cathode of Lithium-Ion Batteries

Inorg Chem. 2022 Jul 25;61(29):11182-11188. doi: 10.1021/acs.inorgchem.2c01154. Epub 2022 Jul 7.

Authors

Feng-Cui Shen¹, Can Guo², Sheng-Nan Sun², Zhen Lei¹, Ya-Qian Lan²

Affiliations

¹ School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China.
² School of Chemistry, South China Normal University, Guangzhou 510006, China.

PMID: 35798569
DOI: 10.1021/acs.inorgchem.2c01154

Abstract

The high theoretical capacity of vanadium oxides makes them promising cathode candidates for the rechargeable lithium-ion batteries (LIBs). Nevertheless, the relatively poor electrical conductivity and capacity retention hinder the practical application and have to be overcome urgently for the increasing demand for storage technologies. Herein, a new BRG system composed of bimetallic oxide/rhodamine B (RB)/reduced graphene oxide (RGO) was prepared through the facile self-sacrificing template of the precursor polyoxometalate (POM) composites POMs/RB/RGO (PRG). RB not only acts as a cationic mediator to facilitate the loading of POMs on graphene for conversion to oxides but also promotes the formation of uniform nanorods on the RGO. The prepared composite FeV₃O₈-RB/RGO-1 as the cathode exhibits superior cycling stability (specific capacity of 225 mA h g^-1 at 100 mA g^-1) and elastic rate capabilities for LIBs. What is more, the new PRG precursor provides versatile possibilities for the design of oxide composites from the self-sacrificing template of POMs-based composites with abundant architectural designs and compositions for the energy storage system.