Exploring the Nanoscale Origin of Performance Enhancement in Li1.1Ni0.35Mn0.55O2 Batteries Due to Chemical Doping
Fuente:
Zenodo
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Recurso digital |
| Language: | English |
| Published: |
Zenodo
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866901209510576128 |
|---|---|
| author | Thersleff, Thomas Jacas-Biendicho, Jordi Rajappa Prakasha, Kunkanadu Martinez-Moreno, Elias Olav-Jøsang, Leif Grins, Jekabs Jaworski, Aleksander Svensson, Gunnar |
| author_facet | Thersleff, Thomas Jacas-Biendicho, Jordi Rajappa Prakasha, Kunkanadu Martinez-Moreno, Elias Olav-Jøsang, Leif Grins, Jekabs Jaworski, Aleksander Svensson, Gunnar |
| contents | <p>Despite significant potential as energy storage materials for electric vehicles due to their combination of high energy density per unit cost and reduced environmental and ethical concerns, Co-free lithium ion batteries based on layered Mn oxides presently lack the longevity and stability of their Co-containing counterparts. Here, a reduction in this performance gap is demonstrated via chemical doping, with Li<sub>1.1</sub>Ni<sub>0.35</sub>Mn<sub>0.54</sub>Al<sub>0.01</sub>O<sub>2</sub> achieving an initial discharge capacity of 159 mAhg<sup>−1</sup> at C/3 rate and a corresponding capacity retention of 94.3% after 150 cycles. The nanoscale origins of this improvement are subsequently explored through a combination of advanced diffraction, spectroscopy, and electron microscopy techniques, finding that optimized doping profiles lead to an improved structural and chemical compatibility between the two constituent sub-phases that characterize the layered Mn oxide system, resulting in the formation of unobstructed lithium ion pathways between them. A structural stabilization effect of the host compound is also directly observed near the surface using aberration corrected scanning transmission electron microscopy and integrated differential phase contrast imaging.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_1002_aenm_202203889 |
| institution | Zenodo |
| language | eng |
| publishDate | 2023 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Exploring the Nanoscale Origin of Performance Enhancement in Li1.1Ni0.35Mn0.55O2 Batteries Due to Chemical Doping Thersleff, Thomas Jacas-Biendicho, Jordi Rajappa Prakasha, Kunkanadu Martinez-Moreno, Elias Olav-Jøsang, Leif Grins, Jekabs Jaworski, Aleksander Svensson, Gunnar cobalt-free layered cathodes lithium ion batteries nanostructures structural stabilization transmission electron microscopy <p>Despite significant potential as energy storage materials for electric vehicles due to their combination of high energy density per unit cost and reduced environmental and ethical concerns, Co-free lithium ion batteries based on layered Mn oxides presently lack the longevity and stability of their Co-containing counterparts. Here, a reduction in this performance gap is demonstrated via chemical doping, with Li<sub>1.1</sub>Ni<sub>0.35</sub>Mn<sub>0.54</sub>Al<sub>0.01</sub>O<sub>2</sub> achieving an initial discharge capacity of 159 mAhg<sup>−1</sup> at C/3 rate and a corresponding capacity retention of 94.3% after 150 cycles. The nanoscale origins of this improvement are subsequently explored through a combination of advanced diffraction, spectroscopy, and electron microscopy techniques, finding that optimized doping profiles lead to an improved structural and chemical compatibility between the two constituent sub-phases that characterize the layered Mn oxide system, resulting in the formation of unobstructed lithium ion pathways between them. A structural stabilization effect of the host compound is also directly observed near the surface using aberration corrected scanning transmission electron microscopy and integrated differential phase contrast imaging.</p> |
| title | Exploring the Nanoscale Origin of Performance Enhancement in Li1.1Ni0.35Mn0.55O2 Batteries Due to Chemical Doping |
| topic | cobalt-free layered cathodes lithium ion batteries nanostructures structural stabilization transmission electron microscopy |
| url | https://doi.org/10.1002/aenm.202203889 |