Su, ZeliangTemprano, IsraelDemortière, Arnaud2024-08-212024-08-212023-10-10Z. Su, I. Temprano, N. Folastre, V. Vanpeene, J. Villanova, G. Gachot, E. V. Shevchenko, C. P. Grey, A. A. Franco, A. Demortière, Binder-Free Cnt Cathodes for Li-O2 Batteries with More Than One Life. Small Methods 2024, 8, 2300452. https://doi.org/10.1002/smtd.2023004522366-9608http://hdl.handle.net/2183/38634[Abstract]: Li-O2 batteries (LOB) performance degradation ultimately occurs through the accumulation of discharge products and irreversible clogging of the porous electrode during the cycling. Electrode binder degradation in the presence of reduced oxygen species can result in additional coating of the conductive surface, exacerbating capacity fading. Herein, a facile method to fabricate free-standing is established, binder-free electrodes for LOBs in which multi-wall carbon nanotubes form cross-linked networks exhibiting high porosity, conductivity, and flexibility. These electrodes demonstrate high reproducibility upon cycling in LOBs. After cell death, efficient and inexpensive methods to wash away the accumulated discharge products are demonstrated, as reconditioning method. The second life usage of these electrodes is validated, without noticeable loss of performance. These findings aim to assist in the development of greener high energy density batteries while reducing manufacturing and recycling costs.eng© 2023 The Authors. Small Methods published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.Binder-freeElectrochemistryLi-O2 batteriesMWCNTsRecyclable materialsSelf-standing electrodesX-ray nano-tomographyjournal articleopen access10.1002/smtd.202300452