HOME > Profile > ESTILI, Mehdi
- Address
- 305-0047 1-2-1 Sengen Tsukuba Ibaraki JAPAN [Access]
Accepting Students
External affiliations
- Editorial Board Member, Ceramics, MDPI, Switzerland
Research
- Keywords
2D nanomaterials, Layered ceramics, MXene, MBene, MAX phases, MAB phases, Ceramic-matrix composites, CNT, Graphene, CNT-reinforced composites
PublicationsNIMS affiliated publications since 2004.
Research papers
- Mehdi Estili, Rong-Jun Xie, Kohsei Takahashi, Shiro Funahashi, Tohru S. Suzuki, Naoto Hirosaki. Robust and orange-yellow-emitting Sr-rich polytypoid α-SiAlON (Sr 3 Si 24 Al 6 N 40 :Eu 2+ ) phosphor for white LEDs. Science and Technology of Advanced Materials. 25 [1] (2024) 2396276 10.1080/14686996.2024.2396276 Open Access
- Mehdi Estili, Shoichi Matsuda, Lulu Jia, Nobuyuki Sakai, Renzhi Ma, Tohru S. Suzuki, Kohei Uosaki. CNT–MXene ultralight membranes: fabrication, surface nano/microstructure, 2D–3D stacking architecture, ion-transport mechanism, and potential application as interlayers for Li–O2 batteries. Nanoscale. 15 [18] (2023) 8289-8303 10.1039/d3nr00712j
- Mehdi Estili. Spontaneous formation of uniform 1D/2D amorphous carbon nanostructures upon fracture of CNT-concentrated ceramics. Carbon. 203 (2023) 230-236 10.1016/j.carbon.2022.11.050
Presentations
- ESTILI, Mehdi, Kohsei Takahashi, Rong-Jun Xie, SUZUKI, Tohru, Naoto Hirosaki. Phase-Pure Synthesis, Structuraland Photoluminescence Properties of New YellowEmitting Eu+2-Doped Sr-containing Phosphor Powders, Sr1+xSi28-2xAl2+2xN40 (x = 2). The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13). 2019
- ESTILI, Mehdi, XIE, Rong-Jun, TAKAHASHI, Kohsei, LIU, Lihong, FUNAHASHI, Shiro, SUZUKI, Tohru, HIROSAKI, Naoto. Powder synthesis and photoluminescence properties of a new yellow-emitting Eu-doped Sr-α-SiAlON phosphor, Sr1+xSi28-2xAl2+2xN40 (x=2). 79th Autumn Meeting of the Japan Society of Applied Physics (JSAP). 2018
- 目 義雄, エスティリ メーディ, 西村 聡之, Guo-Jun Zhang. Preparation of highly Carbon Nanotube (CNT) dispersed ZrB2 and textured Zr(Hf)B2-based UHT ceramics by SPS. J-K International Ceramic Seminar-34. 2017
Misc
- ESTILI, Mehdi, SAKKA, Yoshio. Fabrication of multi-functional carbon nanotube-ceramic hybrids. MATERIALS INTEGRATION(マテリアルインテグレーション). 25 [10] (2012) 52-60
Published patent applications
Research Center for Electronic and Optical Materials
CNT-MXene membranes for electrochemical energy storage applications
2D MXenes, Carbon nanotubes (CNTs), CNTs dispersion, Electrochemical properties, Li-O2 batteries
Overview
• Superior prospect of 2D MXenes for electrochemical energy storage applications.
• Restacking and agglomeration of MXenes considerably limit their true potential for fast ion transport.
• CNTs were dispersed to control the structure and porosity of MXene membranes.
• CNT–MXene hybrid membranes show dramatically improved Li-ion transport properties.
Novelty and originality
• A scalable method to fabricate ultralight yet continuous CNT–MXene membranes with uniform/3D CNTs dispersion.
• Correlation among CNTs content, surface microstructure, MXenes’ stacking structure & ion transport properties of the films.
• Li-ion transport mechanisms in the CNT–MXene membranes.
• MXene membranes with tunable 2D and 3D structures with improved ion-transport performances.
• Potential application of selected CNT–MXene ultralight membranes as interlayers for Li-O2 batteries.
Details
• The compact surface microstructure of MXene membranes is dramatically changed as CNTs occupy MXene/MXene edge interfaces.
• The 2D stacking order of MXenes is preserved up to 30 wt% CNTs.
• The 2D alignment is completely disrupted at 40 wt% CNTs, and a more pronounced surface opening and internal expansion of ~770% are realized.
• Both 30 wt% and 40 wt% membranes show stable cycling performance under a significantly higher current density due to faster transport channels.
• Notably, for the 3D 40 wt% membrane, over-potential during repeated Li deposition/dissolution reactions is further reduced by another ~50%.
• Ultralight yet continuous hybrid films comprising up to ~0.027 mg/cm2 Ti3C2 MXene can be prepared using aqueous colloidal dispersions and vacuum filtration for specific applications
Summary
• A method to fabricate ultralight yet continuous CNT–MXene membranes for electrochemical energy storage applications.
• Inexpensive multi-walled CNTs control the structure of MXene membranes and improve their ion-transport properties.
