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In Situ Probing and Synthetic Control of Cationic Ordering in Ni-Rich Layered Oxide Cathodes

Journal Article · · Advanced Energy Materials
 [1];  [2];  [3];  [4];  [5];  [5];  [6];  [6];  [7];  [7];  [8];  [9];  [2]
  1. Sustainable Energy Technologies Department, Brookhaven National Laboratory, Upton NY 11973 USA; School of Energy, College of Physics, Optoelectronics & Energy, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006 P. R. China
  2. Sustainable Energy Technologies Department, Brookhaven National Laboratory, Upton NY 11973 USA
  3. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge TN 37831 USA
  4. Kazuo Inamori School of Engineering, Alfred University, Alfred NY 14802 USA
  5. Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge LA 70803 USA
  6. Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton NY 11973 USA
  7. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne IL 60439 USA
  8. School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen Guangdong 518055 P. R. China
  9. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton NY 11973 USA
+ Show Author Affiliations
Ni-rich layered oxides (LiNi1-xMxO2; M = Co, Mn, ...) are appealing alternatives to conventional LiCoO2 as cathodes in Li-ion batteries for automobile and other large-scale applications due to their high theoretical capacity and low cost. However, preparing stoichiometric LiNi1-xMxO2 with ordered layer structure and high reversible capacity, has proven difficult due to cation mixing in octahedral sites. Herein, in situ studies of synthesis reactions and the associated structural ordering in preparing LiNiO2 and the Co-substituted variant, LiNi0.8Co0.2O2, are made, to gain insights into synthetic control of the structure and electrochemical properties of Ni-rich layered oxides. Results from this study indicate a direct transformation of the intermediate from the rock salt structure into hexagonal phase, and during the process, Co substitution facilities the nucleation of a Co-rich layered phase at low temperatures and subsequent growth and stabilization of solid solution Li(Ni, Co)O-2 upon further heat treatment. Optimal conditions are identified from the in situ studies and utilized to obtain stoichiometric LiNi0.8Co0.2O2 that exhibits high capacity (up to 200 mA h g(-1) ) with excellent retention. The findings shed light on designing high performance Ni-rich layered oxide cathodes through synthetic control of the structural ordering in the materials.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1406900
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 3 Vol. 7; ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English

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Enhanced high-voltage cycling stability of Ni-rich cathode materials via the self-assembly of Mn-rich shells journal January 2019
Structure- and porosity-tunable, thermally reactive metal organic frameworks for high-performance Ni-rich layered oxide cathode materials with multi-scale pores journal January 2019
Ultrathin Al2O3 Coating on LiNi0.8Co0.1Mn0.1O2 Cathode Material for Enhanced Cycleability at Extended Voltage Ranges journal February 2019
Theoretical investigation of the cation antisite defect in layer-structured cathode materials for Li-ion batteries journal January 2019
A Generalizable Top-Down Nanostructuring Method of Bulk Oxides: Sequential Oxygen-Nitrogen Exchange Reaction journal May 2018
Cooling Induced Surface Reconstruction during Synthesis of High‐Ni Layered Oxides journal October 2019
High-voltage performance of concentration-gradient Li[Ni 0.6 Co 0.2 Mn 0.2 ]O 2 layered oxide cathode materials for lithium batteries journal January 2018
Ti‐Gradient Doping to Stabilize Layered Surface Structure for High Performance High‐Ni Oxide Cathode of Li‐Ion Battery journal September 2019
Surface/Interface Structure Degradation of Ni‐Rich Layered Oxide Cathodes toward Lithium‐Ion Batteries: Fundamental Mechanisms and Remedying Strategies journal December 2019
Radially Oriented Single‐Crystal Primary Nanosheets Enable Ultrahigh Rate and Cycling Properties of LiNi 0.8 Co 0.1 Mn 0.1 O 2 Cathode Material for Lithium‐Ion Batteries journal February 2019
Laser processed Ni-Fe alloys as electrocatalyst toward oxygen evolution reaction journal June 2018
Challenges in Developing Electrodes, Electrolytes, and Diagnostics Tools to Understand and Advance Sodium-Ion Batteries journal February 2018
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In Situ Probing and Synthetic Control of Cationic Ordering in Ni-Rich Layered Oxide Cathodes
Journal Article · Sun Oct 16 20:00:00 EDT 2016 · Advanced Energy Materials · OSTI ID:1389223

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