ArticleNano letters2014
Nanoscale morphological and chemical changes of high voltage lithium-manganese rich NMC composite cathodes with cycling.
Article in Nano letters, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- Elemental Tuning of NMC Cathode Materials: Atomic Structural Variations Drive Performance Improvements.Small (Weinheim an der Bergstrasse, Germany) · 2026Review
- Chemical heterogeneity for battery materials.Nature reviews. Chemistry · 2026Review
- Substantial oxygen loss and chemical expansion in lithium-rich layered oxides at moderate delithiation.Nature materials · 2025Article
- Evolution and expansion of Li concentration gradient during charge-discharge cycling.Nature communications · 2021Article
- Depth-dependent valence stratification driven by oxygen redox in lithium-rich layered oxide.Nature communications · 2020Article
- Machine-learning-revealed statistics of the particle-carbon/binder detachment in lithium-ion battery cathodes.Nature communications · 2020Article
- 3D microstructure design of lithium-ion battery electrodes assisted by X-ray nano-computed tomography and modelling.Nature communications · 2020Article
- Article
- Three-dimensional localization of nanoscale battery reactions using soft X-ray tomography.Nature communications · 2018Article
- Phase transformation mechanism in lithium manganese nickel oxide revealed by single-crystal hard X-ray microscopy.Nature communications · 2017Article
- Unsupervised Data Mining in nanoscale X-ray Spectro-Microscopic Study of NdFeB Magnet.Scientific reports · 2016Article
- Visualization of anisotropic-isotropic phase transformation dynamics in battery electrode particles.Nature communications · 2016Article
- Combining operando synchrotron X-ray tomographic microscopy and scanning X-ray diffraction to study lithium ion batteries.Scientific reports · 2016Article
- Rapid Mapping of Lithiation Dynamics in Transition Metal Oxide Particles with Operando X-ray Absorption Spectroscopy.Scientific reports · 2016Article
- Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides.Nature communications · 2015Article
- Probing three-dimensional sodiation-desodiation equilibrium in sodium-ion batteries by in situ hard X-ray nanotomography.Nature communications · 2015Article
- Agglutination of single catalyst particles during fluid catalytic cracking as observed by X-ray nanotomography.Chemical communications (Cambridge, England) · 2015Article
- Visualization of electrochemically driven solid-state phase transformations using operando hard X-ray spectro-imaging.Nature communications · 2015Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
Understanding the evolution of chemical composition and morphology of battery materials during electrochemical cycling is fundamental to extending battery cycle life and ensuring safety. This is particularly true for the much debated high energy density (high voltage) lithium-manganese rich cathode material of composition Li(1 + x)M(1 - x)O2 (M = Mn, Co, Ni). In this study we combine full-field transmission X-ray microscopy (TXM) with X-ray absorption near edge structure (XANES) to spatially resolve changes in chemical phase, oxidation state, and morphology within a high voltage cathode having nominal composition Li1.2Mn0.525Ni0.175Co0.1O2. Nanoscale microscopy with chemical/elemental sensitivity provides direct quantitative visualization of the cathode, and insights into failure. Single-pixel (∼ 30 nm) TXM XANES revealed changes in Mn chemistry with cycling, possibly to a spinel conformation and likely including some Mn(II), starting at the particle surface and proceeding inward. Morphological analysis of the particles revealed, with high resolution and statistical sampling, that the majority of particles adopted nonspherical shapes after 200 cycles. Multiple-energy tomography showed a more homogeneous association of transition metals in the pristine particle, which segregate significantly with cycling. Depletion of transition metals at the cathode surface occurs after just one cycle, likely driven by electrochemical reactions at the surface.
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