Oxygen vacancy (OV) is native defects in transition metal (TM) oxides and their presence has a critical effect on the physicochemical properties of the oxide. Metal oxides are commonly used in lithium﹊on battery (LIB) cathodes and there is still a lack of understanding of the role of OVs ...
Oxygen‐Vacancy‐Abundant Ferrites on N‐Doped Carbon Nanosheets as High‐Performance Li‐Ion Battery Anodescarbon nanosheetsdopingelectrochemistryferriteslithium-ion batteriesThe transition metal oxides as one of most promising anode materials for lithium﹊on batteries often suffer from poor electronic ...
Structure/interface synergy stabilizes high-nickel cathodes for lithium-ion batteries Due to their high specific capacity, high-nickel layered oxides have been at the forefront of the development of high-energy-density lithium-ion batteries... G Mao,L Zeng,J Yang,... - 《Journal of Materials...
during operation of a rechargeable battery, oxygen vacancies produced at the surfaces of lithium-rich layered cathode particles migrate towards the inside lattice. This process is associated with a high cutoff voltage at which an anionic redox process is activated. First-principle calculations reveal th...
The oxygen redox reaction in lithium-rich layered oxide battery cathode materials generates extra capacity at high cell voltages (i.e., >4.5 V). However, the irreversible oxygen release causes transition metal (TM) dissolution, migration and cell voltage decay. To circumvent these issues, we...
Direct observation of light elements (Li and O) in oxygen-deficient lithium manganese spinel by spherical aberration-corrected scanning transmission electron microscopy is reported. A previously unknown ordered structure was revealed by annular dark-field (ADF) imaging of oxygen columns, while Li ions ...
Double-shell Li-rich layered oxide hollow microspheres with sandwich-like carbon@spinel@layered@spinel@carbon shells as high-rate lithium ion battery cathode Nanomater. Energy (2019) J.Zhanget al. Smart reconstruction of dual-carbon decorated MnO for anode with high-capacity and ultralong-life lit...
High-capacity and low-cost Li-rich layered Mn-based oxides (LLMOs) hold the great promise for next-generation lithium ion battery cathode but LLMOs still encounter grand challenges in voltage decay and gas release. Here, we proposed a simple but effective as well as scalable approach of creat...
Lithium-oxygen battery, rational design cathode, side reaction, Li2O2, cycling performance INTRODUCTION Li-ion batteries are approaching their theoretical limit in energy density, although they have truly changed the world by serving as either portable or large-scale energy storage system[1]. Nonaqueo...
Lithium-ion batteryCoMoO4Oxygen vacancy concentrationHigh energy densityHigh power densityThe application of transition-metal oxides in the energy storage field is hampered by its low electronic conductivity, sluggish Li diffusion, and huge volume changes. The construction of oxygen vacancy defects can ...