| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Lethien, Christophe
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Nanofeather ruthenium nitride electrodes for electrochemical capacitorscitations
- 2024Direct Electrodeposition of Electrically Conducting Ni<sub>3</sub>(HITP)<sub>2</sub> MOF Nanostructures for Micro‐Supercapacitor Integrationcitations
- 2024Direct Electrodeposition of Electrically Conducting Ni 3 (HITP) 2 MOF Nanostructures for Microâ€Supercapacitor Integrationcitations
- 2024Tuning Deposition Conditions for VN Thin Films Electrodes for Microsupercapacitors: Influence of the Thicknesscitations
- 2024Control of microstructure and composition of reactively sputtered vanadium nitride thin films based on hysteresis curves and application to microsupercapacitorscitations
- 2023High Throughput Characterization Methods at the Wafer Scale for Sputtered Films Used in Micro-Supercapacitors and Li-Ion Micro-Batteries
- 2023Major Improvement in the Cycling Ability of Pseudocapacitive Vanadium Nitride Films for Micro‐Supercapacitorcitations
- 2022Sputtered (Fe,Mn)<sub>3</sub>O<sub>4</sub> Spinel Oxide Thin Films for Micro-Supercapacitorcitations
- 2022Toward Optimization of the Chemical/Electrochemical Compatibility of Halide Solid Electrolytes in All-Solid-State Batteriescitations
- 20223D LiMn 2 O 4 Thin Film Deposited by ALD: A Road toward High‐Capacity Electrode for 3D Li‐Ion Microbatteriescitations
- 20223D LiMn<sub>2</sub>O<sub>4</sub> Thin Film Deposited by ALD: A Road toward High‐Capacity Electrode for 3D Li‐Ion Microbatteriescitations
- 2022In Situ Liquid Electrochemical TEM Investigation of LiMn1.5Ni0.5O4 Thin Film Cathode for Micro‐Battery Applicationscitations
- 2022Sputtered (Fe,Mn) 3 O 4 Spinel Oxide Thin Films for Micro-Supercapacitorcitations
- 2022Three-Dimensional TiO2 Film Deposited by ALD on Porous Metallic Scaffold for 3D Li-Ion Micro-Batteries: A Road towards Ultra-High Capacity Electrodecitations
- 2022Three-Dimensional TiO2 Film Deposited by ALD on Porous Metallic Scaffold for 3D Li-Ion Micro-Batteries: A Road towards Ultra-High Capacity Electrodecitations
- 2021Influence of ion implantation on the charge storage mechanism of vanadium nitride pseudocapacitive thin filmscitations
- 2019Fast electrochemical storage process in sputtered Nb<sub>2</sub>O<sub>5</sub> porous thin filmscitations
- 2019Fast Electrochemical Storage Process in Sputtered Nb2O5 Porous Thin Filmscitations
- 2019Fast electrochemical storage process in sputtered Nb 2 O 5 porous thin filmscitations
- 2018On chip interdigitated micro-supercapacitors based on sputtered bifunctional vanadium nitride thin films with finely tuned inter- and intracolumnar porositiescitations
- 2017Sputtered titanium carbide thick film for high areal energy on chip carbon-based micro-supercapacitorscitations
- 2017Sputtered titanium carbide thick film for high areal energy on chip carbon-based micro-supercapacitorscitations
- 2017High areal energy 3D-interdigitated micro-supercapacitors in aqueous and ionic liquid electrolytescitations
- 2016Electrochemical behavior of high performance on-chip porous carbon films for micro-supercapacitors applications in organic electrolytescitations
- 2016Electrochemical behavior of high performance on-chip porous carbon films for micro-supercapacitors applications in organic electrolytescitations
- 2014Step-conformal deposition of TiO2 and MnO2 electrodes on advanced silicon microstructures for 3D Li-ion microbatteries and micro-supercapacitors
Places of action
| Organizations | Location | People |
|---|
article
In Situ Liquid Electrochemical TEM Investigation of LiMn1.5Ni0.5O4 Thin Film Cathode for Micro‐Battery Applications
Abstract
Micro-batteries are attractive miniaturized energy devices for new Internet of Things applications, but the lack of understanding of their degradation process during cycling hinders improving their performance. Here focused ion beam (FIB)-lamella from LiMn1.5Ni0.5O4 (LMNO) thin-film cathode is in situ cycled in a liquid electrolyte inside an electrochemical transmission electron microscope (TEM) holder to analyze structural and morphology changes upon (de)lithiation processes. A high-quality electrical connection between the platinum (Pt) current collector of FIB-lamella and the microchip's Pt working electrode is established, as confirmed by local two-probe conductivity measurements. In situ cyclic voltammetry (CV) experiments show two redox activities at 4.41 and 4.58/4.54 V corresponding to the Ni2+/3+ and Ni3+/4+ couples, respectively. (S)TEM investigations of the cycled thin-film reveal formation of voids and cracks, loss of contact with current collector, and presence of organic decomposition products. The 4D STEM ASTAR technique highlights the emergence of an amorphization process and a decrease in average grain size from 20 to 10 nm in the in situ cycled electrode. The present findings, obtained for the first time through the liquid electrochemical TEM study, provide several insights explaining the capacity fade of the LMNO thin-film cathode typically observed upon cycling in a conventional liquid electrolyte.