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Title: Stabilizing Cathode Materials of Lithium-Ion Batteries by Controlling Interstitial Sites on the Surface

Journal Article · · Chem
 [1];  [1];  [1]; ORCiD logo [1];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [4];  [5];  [5];  [6];  [3];  [1]
  1. Chinese Academy of Sciences (CAS), Beijing (China). CAS Key Lab. of Molecular Nanostructure and Nanotechnology. Inst. of Chemistry; Univ. of Chinese Academy of Sciences, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics. Inst. of Physics
  3. Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program. Texas Materials Inst.
  4. Chinese Academy of Sciences (CAS), Changchun (China). State Key Lab. of Electroanalytical Chemistry. Changchun Inst. of Applied Chemistry
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  6. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry
+ Show Author Affiliations

Lithium-ion batteries with high energy density are being intensively pursued to meet the ever-growing demand for energy storage. However, the increase in energy density often comes with an elevated instability of electrode materials, causing major concerns about the reliability and safety of lithium-ion batteries. In this paper, we report a strategy for stabilizing cathode materials by modulating the vacant lattice sites on the particle surface. Using the high-voltage Li[Ni0.5Mn1.5]O4 as an example, we demonstrate that introduction of a 10-nm epitaxial surface layer with Al3+ in the empty 16c octahedral sites of the spinel Li[Ni0.5Mn1.5]O4 suppresses structural degradation during cycling by increasing the surface stability without interfering with the Li+ diffusion around the Al3+ sites. Control of the Al3+ concentration in the surface region was shown to be a facile process. Finally, the process was shown to stabilize long-term cycling of Li[Ni0.5Mn1.5]O4 to 5 V versus Li+/Li0.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Chinese Academy of Sciences (CAS), Beijing (China); Chinese Academy of Sciences (CAS), Changchun (China); University of Chinese Academy of Sciences, Beijing (China)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES); Chinese Academy of Sciences (CAS) (China); National Natural Science Foundation of China (NSFC); Major State Basic Research Program of China
Grant/Contract Number:
SC0012704; AC02-05CH11231; XDA09010101; 21373238; 51672282; 2013CB934000
OSTI ID:
1591942
Alternate ID(s):
OSTI ID: 1466634
Report Number(s):
BNL-207969-2018-JAAM
Journal Information:
Chem, Vol. 4, Issue 7; ISSN 2451-9294
Publisher:
Cell Press, ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Role of Al-doping with different sites upon the structure and electrochemical performance of spherical LiNi 0.5 Mn 1.5 O 4 cathode materials for lithium-ion batteries journal January 2019
Stabilizing a high-voltage LiNi 0.5 Mn 1.5 O 4 cathode towards all solid state batteries: a Li–Al–Ti–P–O solid electrolyte nano-shell with a host material journal January 2019

Figures / Tables (5)

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Related Subjects

25 ENERGY STORAGE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
lithium-ion battery
cathode
interstitial site
surface stabilization
LiNi0.5Mn1.5O4