DataVXAdvanced Energy MaterialsPaper
journal article·2018-11

Surface Doping to Enhance Structural Integrity and Performance of Li‐Rich Layered Oxide

Shuai Liu, Zepeng Liu, Xi Shen, Weihan Li, Yurui Gao, Mohammad Norouzi Banis, Minsi Li, Kai Chen, Liang Zhu, Richeng Yu, Zhaoxiang Wang, Xueliang Sun, Gang Lu, Qingyu Kong, Xuedong Bai, Liquan Chen

Advanced Energy Materials· Volume 8· Issue 31
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Source abstract

Abstract

Abstract The Li‐rich layer‐structured oxides are regarded as one of the most promising cathode materials for their high energy density but suffer from severe problems such as capacity fading, poor rate performance, and continuous potential dropping. These issues are addressed here by surface doping of niobium (Nb) and other heavy ions in a Li‐rich Mn‐based layered oxide, Li1.2Mn0.54Ni0.13Co0.13O2. The doped ions are verified to be located in the Li‐layer near the oxide surface; they bind the slabs via the strong NbO bonds and “inactivate” the surface oxygen, enhancing the structural stability. The specific capacity of the modified oxide reaches 320 mAh g−1 in the initial cycle, 94.5% of which remains after 100 cycles. More importantly, the average discharge potential drops only by 136 mV in this process. The findings of this study illustrate the importance of inactivating the surface oxygen in suppressing the cation mixing in the bulk, providing an effective strategy for designing high‐performance Li‐rich cathode materials.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Semiconductor materials and devices · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Renewable Energy Chinese Academy of Sciences Beijing Key Laboratory for New Energy Materials and Devices Institute of Physics Chinese Academy of Sciences Beijing 100190 China

School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China

Laboratory for Advanced Materials and Electron Microscopy Institute of Physics Chinese Academy of Sciences Beijing 100190 China

Department of Mechanical and Materials Engineering University of Western Ontario London Ontario N6A 5B9 Canada

Department of Physics and Astronomy California State University Northridge Northridge CA 91330–8268 USA

Synchrotron Soleil L'Orme des Merisiers St‐Aubin 91192 Gif‐sur‐Yvette France

State Key Laboratory for Surface Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

Funding

National Natural Science Foundation of China · Army Research Office

References (35)

Show source-provided references
1. 10.1039/b417616m10.1039/b417616m ↗
2. 10.1002/aenm.20160128410.1002/aenm.201601284 ↗
3. 10.1021/acs.accounts.5b0027710.1021/acs.accounts.5b00277 ↗
4. 10.1039/C4CP04087B10.1039/C4CP04087B ↗
5. 10.1002/aenm.20170239710.1002/aenm.201702397 ↗
6. 10.1016/j.jpowsour.2016.03.10110.1016/j.jpowsour.2016.03.101 ↗
7. 10.1016/j.jpowsour.2005.03.15210.1016/j.jpowsour.2005.03.152 ↗
8. 10.1021/cm301140g10.1021/cm301140g ↗
9. 10.1016/j.jpowsour.2013.02.07510.1016/j.jpowsour.2013.02.075 ↗
10. 10.1149/2.038306jes10.1149/2.038306jes ↗
11. 10.1021/cm400011910.1021/cm4000119 ↗
12. 10.1039/C4CP01799D10.1039/C4CP01799D ↗
13. 10.1021/acs.chemmater.5b0087510.1021/acs.chemmater.5b00875 ↗
14. 10.1021/cm302721910.1021/cm3027219 ↗
15. 10.1039/C6CP08441A10.1039/C6CP08441A ↗
16. 10.1039/C7CP03594B10.1039/C7CP03594B ↗
17. 10.1038/ncomms638110.1038/ncomms6381 ↗
18. 10.1021/cm501025r10.1021/cm501025r ↗
19. 10.1002/chem.20140272710.1002/chem.201402727 ↗
20. 10.1016/j.ultramic.2010.04.00410.1016/j.ultramic.2010.04.004 ↗
21. 10.1016/j.jpowsour.2010.09.10510.1016/j.jpowsour.2010.09.105 ↗
22. 10.1016/j.nanoen.2016.08.03910.1016/j.nanoen.2016.08.039 ↗
23. 10.1039/C6TA00174B10.1039/C6TA00174B ↗
24. 10.1038/s41467-017-02041-x10.1038/s41467-017-02041-x ↗
25. 10.1021/acs.chemrev.7b0000710.1021/acs.chemrev.7b00007 ↗
26. 10.1021/ja053056810.1021/ja0530568 ↗
27. 10.1103/PhysRevB.40.571510.1103/PhysRevB.40.5715 ↗
28. 10.1038/ncomms1381410.1038/ncomms13814 ↗
29. 10.1038/nchem.247110.1038/nchem.2471 ↗
30. 10.1103/PhysRevLett.111.05640410.1103/PhysRevLett.111.056404 ↗
31. 10.1038/s41560-018-0097-010.1038/s41560-018-0097-0 ↗
32. 10.1016/0368-2048(93)02041-J10.1016/0368-2048(93)02041-J ↗
33. 10.1021/cm504597810.1021/cm5045978 ↗
34. 10.1021/acs.chemmater.7b0012010.1021/acs.chemmater.7b00120 ↗
35. 10.1021/jp501777v10.1021/jp501777v ↗