Premium
Introducing Highly Redox‐Active Atomic Centers into Insertion‐Type Electrodes for Lithium‐Ion Batteries
Author(s) -
Ma Yanjiao,
Ma Yuan,
Giuli Gabriele,
Euchner Holger,
Groß Axel,
Lepore Giovanni Orazio,
d'Acapito Francesco,
Geiger Dorin,
Biskupek Johannes,
Kaiser Ute,
Schütz Hanno M.,
Carlsson Anna,
Diemant Thomas,
Behm Rolf Jürgen,
Kuenzel Matthias,
Passerini Stefano,
Bresser Dominic
Publication year - 2020
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202000783
Subject(s) - dopant , materials science , lithium (medication) , anode , gravimetric analysis , doping , ion , nanotechnology , metal , electrode , inorganic chemistry , optoelectronics , chemistry , metallurgy , organic chemistry , medicine , endocrinology
Abstract The development of alternative anode materials with higher volumetric and gravimetric capacity allowing for fast delithiation and, even more important, lithiation is crucial for next‐generation lithium‐ion batteries. Herein, the development of a completely new active material is reported, which follows an insertion‐type lithiation mechanism, metal‐doped CeO 2 . Remarkably, the introduction of carefully selected dopants, herein exemplified for iron, results in an increase of the achievable capacity by more than 200%, originating from the reduction of the dopant to the metallic state and additional space for the lithium ion insertion due to a significant off‐centering of the dopant atoms in the crystal structure, away from the original Ce site. In addition to the outstanding performance of such materials in high‐power lithium‐ion full‐cells, the selective reduction of the iron dopant under preservation of the crystal structure of the host material is expected to open up a new field of research.