High-Performance Polymeric Lithium Salt Electrode Material from Phenol–Formaldehyde Condensation
Source abstract
Abstract
In spite of the recent progress made in organic electrode materials, high-performance candidates are still lacking, especially when taking affordability into account. Herein, we report a novel polymeric lithium salt, namely dilithium salt of poly(2,5-dihydroxy-1,4-benzoquinone-3,6-methylene) (Li2PDBM), which can be easily synthesized by phenol-formaldehyde condensation, followed by lithiation in LiOH solution to eliminate the negative effect of phenol groups in PDBM. Benefiting from a high theoretical capacity (327 mA h g-1), structure stability, insolubility, and redox reversibility, Li2PDBM exhibits superior electrochemical performance as a cathode for rechargeable lithium batteries, including a high reversible capacity (256 mA h g-1), a high rate capability (79% @ 2000 mA g-1), and a high cycling stability (77% @ 2000th cycle). Besides the cost-effective electrode material synthesis approach, this work also provides an important mechanistic understanding of the structure-performance relationship of carbonyl-based electrode materials, especially those with -OH or -OM (M = Li, Na, and K) substituents.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
Funding
Wuhan University · National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Recruitment Program of Global Youth Experts
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