A5008403339- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Semiconductor materials and devices
- Advanced Battery Technologies Research
- Electronic and Structural Properties of Oxides
- Molten salt chemistry and electrochemical processes
- Chemical and Physical Properties of Materials
Argonne National Laboratory
2024-2025
University of Chicago
2024
Transitioning from polycrystalline to single-crystalline nickel-rich cathodes has garnered considerable attention in both academia and industry, driven by advantages of high tap density enhanced mechanical properties. However, with nickel content (>70%) suffer substantial capacity degradation, which poses a challenge their commercial viability. Leveraging multiscale spatial resolution diffraction imaging techniques, we observe that lattice rotations occur universally play pivotal role the...
Abstract Recent efforts to reduce battery costs and enhance sustainability have focused on eliminating Cobalt (Co) from cathode materials. While Co-free designs shown notable success in polycrystalline cathodes, their impact single crystalline (SC) cathodes remains less understood due the significantly extended lithium diffusion pathways higher-temperature synthesis involved. Here, we reveal that removing Co SC is structurally electrochemically unfavorable, exhibiting unusual voltage fade...
Traditional cathode chemistry of Li-ion batteries relies on the transport Li-ions within solid structures, with transition metal ions and anions acting as static components. Here, we demonstrate that a solution F
Amidst the rapid expansion of electric vehicle industry, need for alternative battery technologies that balance economic viability with sustainability has never been more critical. Here, we report common lithium salts Li2CO3 and Li2SO4 are transformed into cathode active mass in Li-ion batteries by ball milling to form a composite Cu2S. The optimal comprising Li2CO3, Li2SO4, Cu2S, practical loading 12.5-13.0 mg/cm2, demonstrates reversible capacity 247 mAh/g based on total Cu2S salts,...
Single-crystal layered oxides (SC-NMC) with grain boundary-free configuration, have effectively addressed the long-standing cracking issue of conventional polycrystalline Ni-rich cathodes (PC-NMC) for lithium-ion batteries, prompting a shift in optimization strategies. However, continued reliance on anisotropic lattice volume change—a well-established failure indicator PC-NMC—as metric understanding strain and guiding compositional designs SC-NMC becomes contentious. Herein, leveraging...
Nickel-rich lithium layered oxides (LiNi x Mn y Co z O 2 (NMC), + = 1, ≥ 0.6) with high accessible capacity, have received tremendous attention as the most promising cathode candidate for next-generation lithium-ion batteries 1 . To obtain materials superior electrochemical performance, substantial efforts focused on optimizing materials’ chemical compositions. However, regardless of compositions, commercial NMC are typically agglomerates composed primary nanograins (polycrystalline (PC)...