DataVXACS Energy LettersPaper
journal article·2021-03-18Open access

What is the Role of Nb in Nickel-Rich Layered Oxide Cathodes for Lithium-Ion Batteries?

Fengxia Xin, Hui Zhou, Yanxu Zong, Mateusz Zuba, Yan Chen, Natasha A. Chernova, Jianming Bai, Ben Pei, Anshika Goel, Jatinkumar Rana, Feng Wang, Ke An, Louis F. J. Piper, Guangwen Zhou, M. Stanley Whittingham

ACS Energy Letters
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Source abstract

Abstract

Nickel-rich layered metal oxide LiNi1–y–zMnyCozO2 (1 – y – z ≥ 0.8) materials are the most promising cathodes for next-generation lithium-ion batteries in electric vehicles. However, they lose more than 10% of their capacity on the first cycle, and interfacial/structural instability causes capacity fading. Coating and substitution are possible direct and effective solutions to solve these challenges. In this Letter, Nb coating and Nb substitution on LiNi0.8Mn0.1Co0.1O2 (NMC811) is easily produced through a scalable wet chemistry method followed by sintering from 400 to 800 °C. A Li-free Nb oxide treatment is found to remove surface impurities forming a LiNbO3/Li3NbO4 surface coating, to reduce the first capacity loss and to improve the rate performance. Nb substitution stabilizes the structure, as evidenced by less heat evolution on heating, thus providing better long cycling stability with a 93.2% capacity retention after 250 cycles.
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Research context

Energy storageCeramics & glasses

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Semiconductor materials and devices

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

Affiliations

Department of Chemistry and Materials, State University of New York at Binghamton, Binghamton, New York 13902-6000, United States

Mechanical Engineering & Materials Science and Engineering Program, State University of New York at Binghamton, Binghamton, New York 13902-6000, United States

Department of Physics, Applied Physics, and Astronomy, State University of New York at Binghamton, Binghamton, New York 13902-6000, United States

Neutron Scattering Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States

National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States

Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902-6000, United States

Sustainable Energy Technologies Department, Brookhaven National Laboratory, Upton, New York 11973, United States

Funding

U.S. Department of Energy

References (7)

Show source-provided references
1. 10.1021/acsenergylett.9b0123610.1021/acsenergylett.9b01236 ↗
2. 10.1149/2.0921714jes10.1149/2.0921714jes ↗
3. 10.1149/1.183331910.1149/1.1833319 ↗
4. 10.1002/aenm.20160195010.1002/aenm.201601950 ↗
5. 10.1021/acs.chemmater.5b0252110.1021/acs.chemmater.5b02521 ↗
6. 10.1016/j.jpowsour.2013.01.06310.1016/j.jpowsour.2013.01.063 ↗
7. 10.1149/2.1381902jes10.1149/2.1381902jes ↗