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Title: Slug Flow Coprecipitation Synthesis of Uniformly-Sized Oxalate Precursor Microparticles for Improved Reproducibility and Tap Density of Li(Ni 0.8 Co 0.1 Mn 0.1 )O 2 Cathode Materials

Journal Article · · ACS Applied Energy Materials

The microparticle quality and reproducibility of Li(Ni0.8Co0.1Mn0.1)O2 (NCM811) cathode materials are important for Li-ion battery performance but can be challenging to control directly from synthesis. Here, a scalable reproducible synthesis process is designed based on slug flow to rapidly generate uniform micron-size spherical-shape NCM oxalate precursor microparticles at 25–34 °C. The whole process takes only 10 min, from solution mixing to precursor microparticle generation, without needing agingthat typically takes hours. These oxalate precursors are convertible to spherical-shape NCM811 oxide microparticles, through a preliminary design of low heating rates (e.g., 0.1 and 0.8 °C/min) for calcination and lithiation. The outcome oxide cathode particles also demonstrate improved tap density (e.g., 2.4 g mL–1 for NCM811) and good specific capacity (202 mAh g–1 at 0.1 C) in coin cells and reasonably good cycling performance with LiF coating.

Research Organization:
Virginia Commonwealth Univ., Richmond, VA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Technology Development (EE-20); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Materials & Manufacturing Technologies Office (AMMTO); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
EE0009110; AC05-00OR22725
OSTI ID:
1960072
Alternate ID(s):
OSTI ID: 1963232; OSTI ID: 1963803; OSTI ID: 1965218
Journal Information:
ACS Applied Energy Materials, Journal Name: ACS Applied Energy Materials Vol. 6 Journal Issue: 6; ISSN 2574-0962
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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