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Title: Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries

Abstract

This work reports a comprehensive study of a novel polyol method that can successfully synthesize layered LiNi 0.4Mn 0.4Co 0.2O 2, spinel LiNi 0.5Mn 1.5O 4, and olivine LiCoPO 4 cathode materials. When properly designed, polyol method offers many advantages such as low cost, ease of use, and proven scalability for industrial applications. Most importantly, the unique properties of polyol solvent allow for greater morphology control as shown by all the resulting materials exhibiting monodispersed nanoparticles morphology. This morphology contributes to improved lithium ion transport due to short diffusion lengths. Polyol-synthesized LiNi 0.4Mn 0.4Co 0.2O 2 delivers a reversible capacity of 101 and 82 mAh·g -1 using high current rate of 5C and 10C, respectively. It also displays surprisingly high surface structure stability after charge-discharge processes. Each step of the reaction was investigated to understand the underlying polyol synthesis mechanism. A combination of in situ and ex situ studies reveal the structural and chemical transformation of Ni-Co alloy nanocrystals overwrapped by a Mn- and Li-embedded organic matrix to a series of intermediate phases, and then eventually to the desired layered oxide phase with a homogeneous distribution of Ni, Co, and Mn. We envisage that this type of analysis will promotemore » the development of optimized synthesis protocols by establishing links between experimental factors and important structural and chemical properties of the desired product. The insights can open a new direction of research to synthesize high-performance intercalation compounds by allowing unprecedented control of intermediate phases using experimental parameters.« less

Authors:
 [1];  [2];  [1];  [1];  [3];  [1];  [4];  [5];  [5];  [2];  [3];  [1];  [1];  [1]
  1. Univ. of California, San Diego, CA (United States). Dept. of NanoEngineering
  2. Stony Brook Univ., NY (United States). Dept. of Chemistry
  3. Binghamton Univ., NY (United States). Dept. of Physics, Applied Physics and Astronomy
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Center for Electron Microscopy, Molecular Foundry
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division (SC-22.3 )
OSTI Identifier:
1561905
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nano Research
Additional Journal Information:
Journal Volume: 12; Journal Issue: 9; Journal ID: ISSN 1998-0124
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Chung, Hyeseung, Grenier, Antonin, Huang, Ricky, Wang, Xuefeng, Lebens-Higgins, Zachary, Doux, Jean-Marie, Sallis, Shawn, Song, Chengyu, Ercius, Peter, Chapman, Karena, Piper, Louis F. J., Cho, Hyung-Man, Zhang, Minghao, and Meng, Ying Shirley. Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries. United States: N. p., 2019. Web. doi:10.1007/s12274-019-2494-5.
Chung, Hyeseung, Grenier, Antonin, Huang, Ricky, Wang, Xuefeng, Lebens-Higgins, Zachary, Doux, Jean-Marie, Sallis, Shawn, Song, Chengyu, Ercius, Peter, Chapman, Karena, Piper, Louis F. J., Cho, Hyung-Man, Zhang, Minghao, & Meng, Ying Shirley. Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries. United States. doi:10.1007/s12274-019-2494-5.
Chung, Hyeseung, Grenier, Antonin, Huang, Ricky, Wang, Xuefeng, Lebens-Higgins, Zachary, Doux, Jean-Marie, Sallis, Shawn, Song, Chengyu, Ercius, Peter, Chapman, Karena, Piper, Louis F. J., Cho, Hyung-Man, Zhang, Minghao, and Meng, Ying Shirley. Thu . "Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries". United States. doi:10.1007/s12274-019-2494-5.
@article{osti_1561905,
title = {Comprehensive study of a versatile polyol synthesis approach for cathode materials for Li-ion batteries},
author = {Chung, Hyeseung and Grenier, Antonin and Huang, Ricky and Wang, Xuefeng and Lebens-Higgins, Zachary and Doux, Jean-Marie and Sallis, Shawn and Song, Chengyu and Ercius, Peter and Chapman, Karena and Piper, Louis F. J. and Cho, Hyung-Man and Zhang, Minghao and Meng, Ying Shirley},
abstractNote = {This work reports a comprehensive study of a novel polyol method that can successfully synthesize layered LiNi0.4Mn0.4Co0.2O2, spinel LiNi0.5Mn1.5O4, and olivine LiCoPO4 cathode materials. When properly designed, polyol method offers many advantages such as low cost, ease of use, and proven scalability for industrial applications. Most importantly, the unique properties of polyol solvent allow for greater morphology control as shown by all the resulting materials exhibiting monodispersed nanoparticles morphology. This morphology contributes to improved lithium ion transport due to short diffusion lengths. Polyol-synthesized LiNi0.4Mn0.4Co0.2O2 delivers a reversible capacity of 101 and 82 mAh·g-1 using high current rate of 5C and 10C, respectively. It also displays surprisingly high surface structure stability after charge-discharge processes. Each step of the reaction was investigated to understand the underlying polyol synthesis mechanism. A combination of in situ and ex situ studies reveal the structural and chemical transformation of Ni-Co alloy nanocrystals overwrapped by a Mn- and Li-embedded organic matrix to a series of intermediate phases, and then eventually to the desired layered oxide phase with a homogeneous distribution of Ni, Co, and Mn. We envisage that this type of analysis will promote the development of optimized synthesis protocols by establishing links between experimental factors and important structural and chemical properties of the desired product. The insights can open a new direction of research to synthesize high-performance intercalation compounds by allowing unprecedented control of intermediate phases using experimental parameters.},
doi = {10.1007/s12274-019-2494-5},
journal = {Nano Research},
number = 9,
volume = 12,
place = {United States},
year = {2019},
month = {8}
}

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