A5018099400- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Catalytic Processes in Materials Science
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Semiconductor materials and devices
- Catalysis and Hydrodesulfurization Studies
- Thermal and Kinetic Analysis
Binghamton University
2020-2024
Nickel-rich layered metal oxide LiNi1–y–zMnyCozO2 (1 – y z ≥ 0.8) materials are the most promising cathodes for next-generation lithium-ion batteries in electric vehicles. However, they lose more than 10% of their capacity on first cycle, and interfacial/structural instability causes fading. Coating substitution possible direct effective solutions to solve these challenges. In this Letter, Nb coating LiNi0.8Mn0.1Co0.1O2 (NMC811) is easily produced through a scalable wet chemistry method...
Though Li2MnO3 was originally considered to be electrochemically inert, its observed activation has spawned a new class of Li-rich layered compounds that deliver capacities beyond the traditional transition-metal redox limit. Despite progress in our understanding oxygen compounds, underlying origin initial charge capacity remains hotly contested. To resolve this issue, we review all possible compensation mechanisms including bulk redox, oxidation Mn4+, and surface degradation for cathodes...
The high nickel layered mixed metal oxides, such as LiNizCoyMn1–z-y–qAlqO2, are the most utilized cathode materials in Li-ion batteries for electric vehicles due to their energy density. However, content increases, they suffer from poor capacity retention and voltage fading interfacial/structural instability. In this paper, a series of Nb-coated/substituted LiNi0.9Co0.05Mn0.05O2 (NMC 9055) were synthesized by reacting Nb precursors, Ni0.9Co0.05Mn0.05(OH)2, LiOH. is found NMC structure also...
Nickel-rich layered oxides, such as LiNi 0.8 Mn 0.1 Co O 2 (NMC 811), are considered one of the most promising candidates for next-generation cathode because their high energy densities and relatively low cost. However, poor first Coulombic efficiency NMC 811 leads to around a 15% capacity loss in cycle at cut-off voltage 4.4 V. Moreover, structure degradation during cycling results fading safety concerns, due potential oxygen after charging. Here, with aluminum substitution manganese...
Rechargeable Li metal batteries (LMBs) constructed from and high-Ni NMCs have attracted much attention because of their high energy density in electrical vehicles. The choice electrolyte plays a crucial role determining the performance Li||high-Ni NMC LMBs. In this work, we investigated electrochemical microstructure change Li||0.7Nb-NMC 9055 LMBs using ether-based (LiFSI–1.2DME–3TTE) carbonate (1 M LiPF6 EC/DMC). results show that can significantly enhance cycling life battery, providing...
Li metal batteries (LMBs) have revived people's interest due to their high energy density. This work compares the cycling stability, structure and thermal stability of Li||0.7Nb-NMC 9055 (0.7% Nb-modified LiNi