Our paper “Rational Design of Transparent Nanowire Architectures with Tunable Geometries for Preventing Marine Fouling” is published in Advanced Materials Interfaces. By tuning nanowire length, spacing, and branching, we systematically study the impact of surface architectures on wettability, algae fouling, and optical transparency. Superhydrophobic nanowire arrays completely block marine biofouling for 22 days. [link]
Author: ndasgupt
New article in Journal of Power Sources Special Issue
Our paper “Efficient Fast-Charging of Lithium-ion Batteries Enabled by Laser-Patterned Three-Dimensional Graphite Anode Architectures” is published in Journal of Power Sources as a part of the Special Issue celebrating the 2019 Nobel Prize in Chemistry for Li-ion Batteries. We demonstrate 4-6C fast charging in >2Ah pouch cells, with ~90% capacity retention after >500 cycles, which is enabled by 3-D graphite architectures. These metrics meet both the DOE and USABC targets for fast charging of EV batteries. [link]
New article in Advanced Electronic Materials
Our paper “High-Performance Zinc Tin Oxide TFTs with Active Layers Deposited by Atomic Layer Deposition” is published in Advanced Electronic Materials. We demonstrate the highest reported mobility to date in ALD ZTO films, which is enabled by a combination of plasma and thermal. ALD. [link]
Neil is promoted to Associate Professor with Tenure
Neil was promoted to the rank of Associate Professor of Mechanical Engineering, with Tenure by the Regents of the University of Michigan [news story]
Neil selected as Miller Faculty Fellow
Neil has been selected by the University of Michigan College of Engineering for designation as a Miller Faculty Scholar. Faculty Scholar is an honorary title awarded to a small group of the most accomplished assistant and associate professors in the College of Engineering. [news article]
New Article in JMCA
Our paper “Electro-Chemo-Mechanical Evolution of Sulfide Solid Electrolyte/Li Metal Interfaces: Operando Analysis and ALD Interlayer Effects” is published in Journal of Materials Chemistry A. We utilize a multi-modal suite of operando methods to study effects of artifical SEI layers deposited by ALD on LGPS solid electrolytes. The study highlights the critical role of mechanical properties on the dynamic evolution of the interphase(s) present. [link]
New paper published in Matter
Our new paper “Li Penetration in Ceramic Solid Electrolytes: Operando Microscopy Analysis of Morphology, Propagation, and Reversibility” is published in Matter. We demonstrate 1) Multiple morphologies of Li penetration are observed; 2) The Li within these structures can be reversibly cycled; 3) The most common Li filaments propagate by a mechanical crack-opening mechanism; 4) The dynamic evolution of filament morphology can be correlated to voltage signatures. [link]
New article in ACS Energy Letters
Our paper “Plan-View Operando Video Microscopy of Li metal Anodes: Identifying the Coupled Relationships among Nucleation, Morphology, and Reversibility” is published in ACS Energy Letters. The results provide mechanistic insight into the influence of surface spatial heterogeneity on nucleation and growth behavior and suggest that dead Li formation is influenced more by nucleation than by growth. [link]
New perspective article in ACS Energy Letters
Our joint perspective article entitled “Challenges in Lithium Metal Anodes for Solid-State Batteries” is published in ACS Energy Letters. In this collaborative article, we describe recent progress in Li metal-solid electrolyte interfaces, and highlight challenges ranging from an improved understanding of filament growth, chemo-mechanical evolution of interfaces, and operando analysis at a range of length and time scales. [link]
Invited talk at Batteries GRC
Neil gave an invited talk at the 2020 Batteries Gordon Research Conference (GRC), and was elected as one of the conference co-chairs for the next Batteries GRC meeting. [ME highlight]