▌Boosting Anode Interfacial Stability in All-Solid-State Lithium Hybrid Batteries with MCMB-Modified Stainless Steel Current Collector
以MCMB修飾不鏽鋼集流體提升全固態鋰混合電池負極界面穩定性
Abebe Taye Fenta, Yosef Nikodimos, Semaw Kebede Merso, Ayenew Meniber, Misganaw Adigo Weret, Kassie Nigus Shitaw, Bereket Woldegbreal Taklu, Felika Valencia, Tsung-I Yeh, Chia Lung Hsieh, Chia-Yu Chang , Ya-Jun Liu, Ching Ying Chen, Hsuan-Hsuan Su, She-Huang Wu*, Wei-Nien Su*, Bing Joe Hwang*
https://doi.org/10.1016/j.cej.2025.161439
SEED Member: She-Huang Wu , Wei-Nien Su, Bing Joe Hwang
Schematic diagram
Major Contributions
1.Developed a novel hybrid anode composed of mesocarbon microbeads (MCMB) integrated with lithiophilic silver nanoparticles and coated with polyvinylidene fluoride (PVDF), which significantly enhances lithium deposition uniformity and interfacial stability in all-solid-state lithium-hybrid batteries.
2.Systematically demonstrated, using synchrotron in-situ high-resolution powder X-ray diffraction and Raman spectroscopy, that MCMB is intrinsically incompatible with composite argyrodite sulfide solid-state electrolyte (CLPSC), but the incorporation of silver nanoparticles and PVDF coating effectively suppresses detrimental interfacial reactions, forming a LiF-rich artificial solid electrolyte interphase.
3.Achieved a substantial improvement in electrochemical performance, including an increase in initial Coulombic efficiency from 70.0% to 84.55%, enhanced charge capacity, and prolonged cycling stability, offering a promising pathway for the development of safer, high-efficiency all-solid-state lithium-hybrid batteries with non-flammable electrolytes.
主要貢獻
1.創新設計出結合介孔碳微球（MCMB）、親鋰性銀奈米粒子以及聚偏二氟乙烯（PVDF）塗層的混合型負極，顯著提升全固態鋰混合電池中鋰沉積的均勻性與界面穩定性。
2.系統性地利用同步輻射原位高解析度粉末X光繞射與拉曼光譜證明，MCMB與複合型方鉛礦硫化物固態電解質（CLPSC）本質上不相容，但透過銀奈米粒子與PVDF塗層的設計，能有效抑制不良界面反應，並形成富含LiF的人造固態電解質界面層。
3.實現了電化學性能的顯著提升，包括初始庫倫效率由70.0%提升至84.55%，充電容量與循環穩定性同步增強，為開發更安全、高效且具非易燃電解質的全固態鋰混合電池提供了可行路徑。
