The role of oxygen vacancies in the performance of LiMn<sub>2</sub>O<sub>4</sub> spinel cathodes for lithium-ion batteries

Wang, Jing; Xing, Haiyang; Hou, Wenqiang; Xu, Youlong

doi:10.1039/d3cp01729j

Cited by 4 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These considerations raise the question whether oxygen vacancies and the accompanying electron (Mn 3+ ) stabilisation might also increase the average voltage and energy density in LiMn 2 O 4− δ cathodes. In fact, Wang et al recently reported differential capacity curves of oxygen-deficient LMO samples, which appear shifted by more than +50 mV with respect to nearly stoichiometric LMO, 50 and are therefore consistent with our results for oxygen-deficient LNMO.…”

Section: Discussionsupporting

confidence: 93%

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi_0.5Mn_1.5O_4−δ thin films

Bumberger,

Ražnjević,

Zhang

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 93%

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi_0.5Mn_1.5O_4−δ thin films

Bumberger,

Ražnjević,

Zhang

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Effect of Oxidative Synthesis Conditions on the Performance of Single‐Crystalline LiMn_2‐_xM_xO₄ (M = Al, Fe, and Ni) Spinel Cathodes in Lithium‐Ion Batteries

Park,

Guo,

Manthiram

2023

Small

View full text Add to dashboard Cite

LiMn2O4 (LMO) spinel cathode materials attract much interest due to the low price of manganese and high power density for lithium‐ion batteries. However, the LMO cathodes suffer from the Mn dissolution problem at particle surfaces, which accelerates capacity fade. Herein, the authors report that the oxidative synthesis condition is a key factor in the cell performance of single‐crystalline LiMn2‐xMxO4 (0.03 ≤ x ≤ 0.1, M = Al, Fe, and Ni) cathode materials prepared at 1000 °C. The use of oxygen flow during the spinel‐phase formation minimizes the presence of oxygen vacancies generated at 1000 °C, thereby yielding a stoichiometrically doped LMO product; otherwise, the spinel cathode prepared in atmospheric air readily loses capacity due to the oxygen vacancies in the structure. As a way of circumventing the use of oxygen flow, a one‐pot, two‐step heating in air at 1000 °C and subsequently at 600 °C is used to yield the stoichiometric LMO product. The lithiation heating at 1000–600 ⁰C resulted in a significant improvement in the cycling stability of the prepared LMO cathode in graphite‐based full cells. This study on oxidative synthesis conditions also confirms the advantage of minimizing the surface area of the cathode particles.

show abstract

Regulated resistive switching behaviors of Pt/Ni0.5Zn0.5Fe2O4/Pt composite films by oxygen pressure

Nan,

Zhang,

Pan

et al. 2024

Ceramics International

View full text Add to dashboard Cite

The role of oxygen vacancies in the performance of LiMn₂O₄ spinel cathodes for lithium-ion batteries

Abstract: Oxygen vacancies, known as unavoidable existence in spinel LiMn2O4 material, play an essential factor in its physicochemical and electrochemical properties. However, the function mechanism of oxygen vacancies and its influence...

Cited by 4 publications

References 56 publications

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi_0.5Mn_1.5O_4−δ thin films

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi_0.5Mn_1.5O_4−δ thin films

Effect of Oxidative Synthesis Conditions on the Performance of Single‐Crystalline LiMn_2‐_xM_xO₄ (M = Al, Fe, and Ni) Spinel Cathodes in Lithium‐Ion Batteries

Regulated resistive switching behaviors of Pt/Ni0.5Zn0.5Fe2O4/Pt composite films by oxygen pressure

Contact Info

Product

Resources

About

The role of oxygen vacancies in the performance of LiMn2O4 spinel cathodes for lithium-ion batteries

Abstract: Oxygen vacancies, known as unavoidable existence in spinel LiMn2O4 material, play an essential factor in its physicochemical and electrochemical properties. However, the function mechanism of oxygen vacancies and its influence...

Cited by 4 publications

References 56 publications

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi0.5Mn1.5O4−δ thin films

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi0.5Mn1.5O4−δ thin films

Effect of Oxidative Synthesis Conditions on the Performance of Single‐Crystalline LiMn2‐xMxO4 (M = Al, Fe, and Ni) Spinel Cathodes in Lithium‐Ion Batteries

Regulated resistive switching behaviors of Pt/Ni0.5Zn0.5Fe2O4/Pt composite films by oxygen pressure

Contact Info

Product

Resources

About

The role of oxygen vacancies in the performance of LiMn₂O₄ spinel cathodes for lithium-ion batteries

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi_0.5Mn_1.5O_4−δ thin films

Chemical capacitance measurements reveal the impact of oxygen vacancies on the charge curve of LiNi_0.5Mn_1.5O_4−δ thin films

Effect of Oxidative Synthesis Conditions on the Performance of Single‐Crystalline LiMn_2‐_xM_xO₄ (M = Al, Fe, and Ni) Spinel Cathodes in Lithium‐Ion Batteries