Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Lithium-rich manganese-based cathode materials Li[LiNiMn]O have received considerable attention. However, severe voltage decay and structural distortion of O3-type layered oxides hinder further practical applications. O2-type layered cathode materials can restrict the movements of transition metals and effectively suppress the voltage decay. However, O2-type layered oxides are fundamentally limited by inferior rate performance. Herein, we introduce cobalt into the TM layer in the O2-type oxide, Li[NiMnCo□]O (□ represents vacancy, O2-LNMCO), which increases the electronic and ionic conductivity, improving the Li diffusion kinetics. Significantly, O2-LNMCO exhibits excellent rate properties, delivering a discharge specific capacity of 145 mAh g at 5 C and 111.6 mAh g at 10 C. Furthermore, the voltage decay of O2-LNMCO was restrained with an attenuation rate of 2.23 mV per cycle.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d5cc03661e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tuning the rate performance in O2-type layered manganese-based oxides through cobalt doping.
Chem Commun (Camb)
September 2025
State Key Laboratory of Electrical Insulation and Power Equipment, School of Chemical Engineering and Technology, Xi'an Jiaotong University, No. 28, West Xianning Road, Xi'an 710049, China.
Lithium-rich manganese-based cathode materials Li[LiNiMn]O have received considerable attention. However, severe voltage decay and structural distortion of O3-type layered oxides hinder further practical applications. O2-type layered cathode materials can restrict the movements of transition metals and effectively suppress the voltage decay.
View Article and Find Full Text PDFInhibiting Voltage Decay in Li-Rich Layered Oxide Cathode: From O3-Type to O2-Type Structural Design.
Nanomicro Lett
August 2024
State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, People's Republic of China.
Li-rich layered oxide (LRLO) cathodes have been regarded as promising candidates for next-generation Li-ion batteries due to their exceptionally high energy density, which combines cationic and anionic redox activities. However, continuous voltage decay during cycling remains the primary obstacle for practical applications, which has yet to be fundamentally addressed. It is widely acknowledged that voltage decay originates from the irreversible migration of transition metal ions, which usually further exacerbates structural evolution and aggravates the irreversible oxygen redox reactions.
View Article and Find Full Text PDFHighly reversible transition metal migration in superstructure-free Li-rich oxide boosting voltage stability and redox symmetry.
Nat Commun
June 2024
College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
The further practical applications of Li-rich layered oxides are impeded by voltage decay and redox asymmetry, which are closely related to the structural degradation involving irreversible transition metal migration. It has been demonstrated that the superstructure ordering in O2-type materials can effectively suppress voltage decay and redox asymmetry. Herein, we elucidate that the absence of this superstructure ordering arrangement in a Ru-based O2-type oxide can still facilitate the highly reversible transition metal migration.
View Article and Find Full Text PDFStructurally robust lithium-rich layered oxides for high-energy and long-lasting cathodes.
Nat Commun
February 2024
Department of Materials Science and Engineering, Institute for Rechargeable Battery Innovations, Research Institute of Advanced Materials, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
Article Synopsis
- O2-type lithium-rich layered oxides effectively prevent the migration of transition metals and voltage decay, making them ideal for studying oxygen redox properties.
- A new series of these oxides shows minimal structural changes and retains voltage stability even with high oxygen participation.
- The study highlights the impact of oxygen redox on the structure and performance, showing that balancing redox capabilities ensures high voltage and capacity while revealing a new mechanism for capacity fading that differs from past findings.
Promoting threshold voltage of P2-NaNiMnO with Cu cation doping toward high-stability cathode for sodium-ion battery.
J Colloid Interface Sci
April 2024
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
P2-type NaNiMnO has attracted considerable attraction as a cathode material for sodium-ion batteries owing to its high operating voltage and theoretical specific capacity. However, when the charging voltage is higher than 4.2 V, the NaNiMnO cathode undergoes a detrimental irreversible phase transition of P2-O2, leading to a drastic decrease in specific capacity.
View Article and Find Full Text PDF