All Publications

  • Nanoporous Tin with a Granular Hierarchical Ligament Morphology as a Highly Stable Li-Ion Battery Anode ACS APPLIED MATERIALS & INTERFACES Cook, J. B., Detsi, E., Liu, Y., Liang, Y., Kim, H., Petrissans, X., Dunn, B., Tolbert, S. H. 2017; 9 (1): 293-303


    Next generation Li-ion batteries will require negative electrode materials with energy densities many-fold higher than that found in the graphitic carbon currently used in commercial Li-ion batteries. While various nanostructured alloying-type anode materials may satisfy that requirement, such materials do not always exhibit long cycle lifetimes and/or their processing routes are not always suitable for large-scale synthesis. Here, we report on a high-performance anode material for next generation Li-ion batteries made of nanoporous Sn powders with hierarchical ligament morphology. This material system combines both long cycle lifetimes (more than 72% capacity retention after 350 cycles), high capacity (693 mAh/g, nearly twice that of commercial graphitic carbon), good charging/discharging capabilities (545 mAh/g at 1 A/g, 1.5C), and a scalable processing route that involves selective alloy corrosion. The good cycling performance of this system is attributed to its nanoporous architecture and its unique hierarchical ligament morphology, which accommodates the large volume changes taking place during lithiation, as confirmed by synchrotron-based ex-situ X-ray 3D tomography analysis. Our findings are an important step for the development of high-performance Li-ion batteries.

    View details for DOI 10.1021/acsami.6b09014

    View details for Web of Science ID 000392037400036

    View details for PubMedID 28005328

  • Mesoporous Ni60Fe30Mn10-alloy based metal/metal oxide composite thick films as highly active and robust oxygen evolution catalysts ENERGY & ENVIRONMENTAL SCIENCE Detsi, E., Cook, J. B., Lesel, B. K., Turner, C. L., Liang, Y., Robbennolt, S., Tolbert, S. H. 2016; 9 (2): 540-549

    View details for DOI 10.1039/c5ee02509e

    View details for Web of Science ID 000369744500020