Composition-Tailored Synthesis of Gradient Transition Metal Precursor Particles for Lithium-Ion Battery Cathode Materials

Title
Composition-Tailored Synthesis of Gradient Transition Metal Precursor Particles for Lithium-Ion Battery Cathode Materials
Author
선양국
Keywords
gradient materials; cathode; tailored synthesis; transition metal oxide; lithium-ion battery
Issue Date
2011-04
Publisher
Amer Chemical SOC
Citation
Chemistry of Materials, 2011, 23(7), P.1954-1963
Abstract
We report the tailored synthesis of particles with internal gradients in transition metal composition aided by the use of a general process model. Tailored synthesis of transition metal particles was achieved using a coprecipitation reaction with tunable control over the process conditions. Gradients in the internal composition of the pas-tides was monitored and confirmed experimentally by analysis of particles collected during regularly timed intervals. Particles collected from the reactor at the end of the process were used as the precursor material for the solid-state synthesis of Li(1.2)-(Mn(0.62)Ni(0).(38))(0.8)O(2), which was electrochemically evaluated as the active cathode material in a lithium battery. The Li(1.2)(Mn(0.62)Ni(0.38))(0.8)O(2) material was the first example of a structurally integrated multiphase material with a tailored internal gradient in relative transition metal composition as the active cathode material in a lithium-ion battery. We believe our general synthesis strategy may be applied to produce a variety of new cathode materials with tunable interior, surface, and overall relative transition metal compositions.
Description
UChicago Argonne, LLC
URI
https://pubs.acs.org/doi/abs/10.1021/cm200058c
ISSN
0897-4756
DOI
10.1021/cm200058c
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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