scholarly journals Enhanced Performance of LiAl0.1Mn1.9O4 Cathode for Li-Ion Battery via TiN Coating

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 825
Author(s):  
Pinelopi Angelopoulou ◽  
Spyros Kassavetis ◽  
Joan Papavasiliou ◽  
Dimitris Karfaridis ◽  
Grzegorz Słowik ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Capacity Fading ◽  
Spinel Limn2o4 ◽  
Tin Coating ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Li Ion ◽  
Structure Stabilization ◽  
Jahn Teller Distortion

The present work addresses the issues related to the capacity fading of spinel LiMn2O4, such as Mn leaching and Jahn–Teller distortion and suggests an advanced TiN-coated LiAl0.1Mn1.9O4 (LAMO) cathode material as an electrode for lithium-ion batteries. TiN coating layers with the same thickness but a different porosity cover the LiAl0.1Mn1.9O4 electrode via reactive magnetron sputtering, and present promising electrochemical behavior. In contrast with the pristine LiAl0.1Mn1.9O4, the dense TiN-coated LiAl0.1Mn1.9O4 electrode demonstrates a remarkable long-term cycling by reducing the contact area of the electrode/electrolyte interface, resulting in structure stabilization.

In situ XAFS study on cathode materials for lithium-ion batteries

2000 ◽  
Vol 658 ◽  
Author(s):  
Takamasa Nonaka ◽  
Chikaaki Okuda ◽  
Yoshio Ukyo ◽  
Tokuhiko Okamoto
Keyword(s):  
Structural Changes ◽  
Chemical Shifts ◽  
Lithium Ion ◽  
Capacity Fading ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Electrochemical Cycling ◽  
X Ray Absorption ◽  
Jahn Teller Distortion

ABSTRACTNi and Co K-edge X-ray absorption spectra of LiNi0.8Co0.2O2 have been collected using in situ coin cells. To investigate the electronic and structural changes accompanied by the capacity fading during electrochemical cycling and keeping batteries at high temperatures, the cells with different cycling states and keeping conditions (temperature, time) were prepared. Upon charging the cell, the Ni and Co K absorption edge shifted towards higher energy, and the good correlation between the range of chemical shifts upon charging and the capacity of the cell was observed. From quantitative analysis of EXAFS data, it was revealed that the capacity fading is closely related to the Jahn-Teller distortion of the NiO6 octahedron.

Phase Transition of LiMn2O4 Spinel and its Application for Lithium Ion Secondary Battery

1997 ◽  
Vol 496 ◽  
Author(s):  
Junji Tabuchi ◽  
Tatsuji Numata ◽  
Yuichi Shimakawa ◽  
Masato Shirakata
Keyword(s):  
Phase Transition ◽  
Lithium Ion ◽  
Electrochemical Characteristics ◽  
Teller Distortion ◽  
Limn2o4 Spinel ◽  
Structure Changes ◽  
Jahn Teller ◽  
Initial Charge ◽  
Lower Temperature ◽  
Jahn Teller Distortion

ABSTRACTLiMn2O4 has a phase transition at room temperature, which is caused by Jahn-Teller distortion. DC resistivity of LiMn2O4 shows an anomaly at the transition temperature, while no such anomaly is observed in samples with excess lithium. X-ray diffraction patterns of LiMn2O4reveal that the crystal structure changes from cubic at higher temperature to orthorombic, as a first approximation, at lower temperature. However, no differences in initial charge-discharge curve are observed, which means that the Jahn-Teller distortion has no effect on electrochemical characteristics. The authors have succeeded in mass-producing lithium ion secondary batteries with a manganese spinel cathode.

scholarly journals Lattice Compensation to Jahn–Teller Distortion in Na-Rich Manganese Hexacyanoferrate for Li-Ion Storage: An Operando Study

2020 ◽  
Vol 3 (6) ◽  
pp. 5728-5733 ◽  
Author(s):  
Angelo Mullaliu ◽  
Mattia Gaboardi ◽  
Jasper Rikkert Plaisier ◽  
Stefano Passerini ◽  
Marco Giorgetti
Keyword(s):  
Teller Distortion ◽  
Ion Storage ◽  
Jahn Teller ◽  
Li Ion ◽  
Jahn Teller Distortion

Influence of magnetic ordering and Jahn–Teller distortion on the lithiation process of LiMn2O4

2017 ◽  
Vol 19 (9) ◽  
pp. 6481-6486 ◽  
Author(s):  
Wei-Wei Liu ◽  
Da Wang ◽  
Zhifan Wang ◽  
Jianguo Deng ◽  
Woon-Ming Lau ◽  
...  
Keyword(s):  
Cathode Materials ◽  
First Principles ◽  
Magnetic Ordering ◽  
Li Ion Batteries ◽  
Promising Candidate ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Li Ion ◽  
Jahn Teller Distortion

We performed extensive first-principles studies on the magnetic ordering and Jahn–Teller (JT) distortion of spinel LiMn2O4, a promising candidate for cathode materials in Li-ion batteries.

Jahn–Teller distortion affected Li ion migration in spinel TiO2

2017 ◽  
Vol 312 ◽  
pp. 17-20 ◽  
Author(s):  
Fanghua Ning ◽  
Hewen Wang ◽  
Bo Xu ◽  
Chuying Ouyang
Keyword(s):  
Ion Migration ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Li Ion ◽  
Jahn Teller Distortion

Double the Capacity of Manganese Spinel for Lithium‐Ion Storage by Suppression of Cooperative Jahn–Teller Distortion

2020 ◽  
Vol 10 (34) ◽  
pp. 2000363 ◽  
Author(s):  
Changjian Zuo ◽  
Zongxiang Hu ◽  
Rui Qi ◽  
Jiajie Liu ◽  
Zhibo Li ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Teller Distortion ◽  
Ion Storage ◽  
Jahn Teller ◽  
Jahn Teller Distortion

scholarly journals Correlation between manganese dissolution and dynamic phase stability in spinel-based lithium-ion battery

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Tongchao Liu ◽  
Alvin Dai ◽  
Jun Lu ◽  
Yifei Yuan ◽  
Yinguo Xiao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Structural Evolution ◽  
Lithium Ion ◽  
Metal Dissolution ◽  
Capacity Fading ◽  
Teller Distortion ◽  
Surface Stability ◽  
Root Cause ◽  
Jahn Teller ◽  
Phase Surface

Abstract Historically long accepted to be the singular root cause of capacity fading, transition metal dissolution has been reported to severely degrade the anode. However, its impact on the cathode behavior remains poorly understood. Here we show the correlation between capacity fading and phase/surface stability of an LiMn2O4 cathode. It is revealed that a combination of structural transformation and transition metal dissolution dominates the cathode capacity fading. LiMn2O4 exhibits irreversible phase transitions driven by manganese(III) disproportionation and Jahn-Teller distortion, which in conjunction with particle cracks results in serious manganese dissolution. Meanwhile, fast manganese dissolution in turn triggers irreversible structural evolution, and as such, forms a detrimental cycle constantly consuming active cathode components. Furthermore, lithium-rich LiMn2O4 with lithium/manganese disorder and surface reconstruction could effectively suppress the irreversible phase transition and manganese dissolution. These findings close the loop of understanding capacity fading mechanisms and allow for development of longer life batteries.

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