DataVXAdvanced Functional MaterialsPaper
journal article·2023-07

Elastic Interfacial Layer Enabled the High‐Temperature Performance of Lithium‐Ion Batteries via Utilization of Synthetic Fluorosulfate Additive

Hyeongyu Moon, Huibeom Nam, Min Pyeong Kim, Seung Min Lee, Hyeongjun Kim, Min Ho Jeon, Yoon‐Sung Lee, Koeun Kim, Joong‐Hyun Chun, Sang Kyu Kwak, Sung You Hong, Nam‐Soon Choi

Advanced Functional Materials· Volume 33· Issue 29
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Source abstract

Abstract

Abstract The key to producing high‐energy Li‐ion cells is ensuring the interfacial stability of Si‐containing anodes and Ni‐rich cathodes. Herein, 4‐(allyloxy)phenyl fluorosulfate (APFS), a multi‐functional electrolyte additive that forms a mechanical strain‐adaptive solid electrolyte interphase (SEI) comprising LiF and polymeric species, and a thermally stable cathode–electrolyte interface containing SO and SF species. The radical copolymerization of vinylene carbonate (VC) with APFS via electrochemical initiation creates a spatially deformable polymeric SEI on the SiG‐C (30 wt.% graphite + 70 wt.% SiC composite) anode, with large volume changes during cycling. Moreover, the APFS‐promoted interfacial layers reduce Ni dissolution and deposition. Furthermore, APFS deactivates the Lewis acid PF5, thereby inhibiting hydrolyses that produce unwanted HF. These results indicate that the combined use of VC with APFS allows capacity retentions of 72.5% with a high capacity of 143.5 mAh g−1 in SiG‐C/LiNi0.8Co0.1Mn0.1O2 full cells after 300 cycles at 45 °C.
Source: crossref · Quality: baseline

Research context

Energy storagePolymersCompositesMaterials processing

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak‐ro, Yuseong‐gu Daejeon 34141 Republic of Korea

Research & Development Division Hyundai Motor Company 150 Hyundaiyeonguso‐ro, Namyang‐eup, Hwaseong‐si Gyeonggi‐do 18280 Republic of Korea

Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) 50 UNIST‐gil Ulsan 44919 Republic of Korea

School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST‐gil Ulsan 44919 Republic of Korea

Department of Nuclear Medicine Yonsei University College of Medicine 50–1 Yonsei‐ro, Sinchon‐dong, Seodaemun‐gu Seoul 03722 Republic of Korea

Department of Chemical and Biological Engineering Korea University 145 Anam‐ro, Seongbuk‐gu Seoul 02841 Republic of Korea

Funding

Korea Advanced Institute of Science and Technology

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