Xiaozhi Jiang, Fangyan Liu, Maohui Bai*, Long Chen, Mengran Wang, Kun Zhang*, Jiayi Yang*, Bo Hong*, Yang Ren, Yanqing Lai and Jie Li,
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Breaking Solvation Dominance of Phosphate via Dipole–Dipole Chemistry in Gel Polymer Electrolyte
A prevalent method to bolster the safety of lithium-ion batteries (LIBs) is through the deployment of phosphate-based electrolytes. Nonetheless, an intrinsic challenge arises from the incompatibility between phosphate components and graphite anodes, a phenomenon known as coinsertion. To tackle this obstacle, we introduce a comprehensive strategy that employs in situ thermal polymerization, leveraging a flame-retardant solvent and a polymer matrix. This approach fosters strong dipole–dipole interactions between phosphate molecules and the polymer matrix, effectively alleviating the adverse impacts on graphite anodes. This significant enhancement is validated through in situ X-ray diffraction, X-ray photoelectron spectroscopy depth profile analysis, and transmission electron microscopy imaging. Our methodology facilitated stable lithium-ion operations within electrolytes comprising 20% phosphate components in assembled NCM811|P-GPE|Gr pouch cells, achieving a low-capacity decay rate of 0.0023% per cycle with good flame-retardant characteristics. We believe this strategy heralds new commercial prospects for incorporating phosphate-based solvents in the creation of exceptionally safe LIBs.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.