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@ARTICLE{Wang:893036,
author = {Wang, Rui and Chen, Xin and Huang, Zhongyuan and Yang,
Jinlong and Liu, Fusheng and Chu, Mihai and Liu, Tongchao
and Wang, Chaoqi and Zhu, Weiming and Li, Shuankui and Li,
Shunning and Zheng, Jiaxin and Chen, Jie and He, Lunhua and
Jin, Lei and Pan, Feng and Xiao, Yinguo},
title = {{T}win boundary defect engineering improves lithium-ion
diffusion for fast-charging spinel cathode materials},
journal = {Nature Communications},
volume = {12},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {FZJ-2021-02516},
pages = {3085},
year = {2021},
abstract = {Defect engineering on electrode materials is considered an
effective approach to improve the electrochemical
performance of batteries since the presence of a variety of
defects with different dimensions may promote ion diffusion
and provide extra storage sites. However, manipulating
defects and obtaining an in-depth understanding of their
role in electrode materials remain challenging. Here, we
deliberately introduce a considerable number of twin
boundaries into spinel cathodes by adjusting the synthesis
conditions. Through high-resolution scanning transmission
electron microscopy and neutron diffraction, the detailed
structures of the twin boundary defects are clarified, and
the formation of twin boundary defects is attributed to
agminated lithium atoms occupying the Mn sites around the
twin boundary. In combination with electrochemical
experiments and first-principles calculations, we
demonstrate that the presence of twin boundaries in the
spinel cathode enables fast lithium-ion diffusion, leading
to excellent fast charging performance, namely, $75\%$ and
$58\%$ capacity retention at 5 C and 10 C, respectively.
These findings demonstrate a simple and effective approach
for fabricating fast-charging cathodes through the use of
defect engineering.},
cin = {ER-C-1},
ddc = {500},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {535 - Materials Information Discovery (POF4-535)},
pid = {G:(DE-HGF)POF4-535},
typ = {PUB:(DE-HGF)16},
pubmed = {34035292},
UT = {WOS:000658773300008},
doi = {10.1038/s41467-021-23375-7},
url = {https://juser.fz-juelich.de/record/893036},
}