Roby Soni

Understanding the Electro-Chemo-Mechanical Processes of Graphite/Si Composite Lithium-ion Battery Electrodes by Multimodal Operando Microscopy

Xuekun Lu, Rhodri E. Owen, Wenjia Du, Zhenyu Zhang et autres

Understanding the structure–function relationship in complex energy materials requires advanced microscopy approaches capable of resolving three-dimensional microstructural evolution across multiple length scales and under realistic operating conditions. In this work, we present a multimodal, multiscale microscopy framework to investigate the dynamic electro-chemo-mechanical …

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From pollutant to product: A lattice-engineering strategy for efficient and selective urea electrolysis

Adam J. Lovett, Roby Soni, Thomas S. Miller

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Unravelling electro-chemo-mechanical processes in graphite/silicon composites for designing nanoporous and microstructured battery electrodes

Xuekun Lu, Rhodri E. Owen, Wenjia Du, Zhenyu Zhang et autres

Silicon is a promising negative electrode material for high-energy batteries, but its volume changes during cell cycling cause rapid degradation, limiting its loading to about 10 wt.% in conventional graphite/Si composite electrodes. Overcoming this threshold requires evidence-based design for the formulation of …

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An Intermediate Solvation Regime to Enable Efficient Quasi-Solid-State Conversion in Li–S Batteries

Roby Soni, Yiming Guo, Matthias Golomb, Neubi Francisco Xavier et autres

Lithium–sulfur (Li–S) batteries are considered next-generation energy storage systems owing to their ultrahigh theoretical energy density and low materials cost. However, practical deployment is impeded by polysulfide shuttle, sluggish redox kinetics, and high polarization, particularly under lean electrolyte conditions. Quasi-solid-state conversion (QSSC) …

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Fibroin: A Multi-Functional Bio-Derived Binder for Lithium–Sulfur Batteries

Yiming Guo, Roby Soni, Kofi Coke, James B. Robinson et autres

Traditionally, binders such as poly-(vinylidene fluoride) (PVDF) have been used within lithium-sulfur (Li-S) batteries, but these present environmental and recyclability challenges and have little to no impact on the processes that drive degradation in the cell's chemistry. Ideally, a Li-S battery binder …

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A High‐Performance Polysulfide‐Trapping Lithium Sulfur Battery Cathode: Cubic Co3O4 Catalyst within a Nitrogen‐Doped Entangled Graphene Framework

Narugopal Manna, Roby Soni, R. S. Young, Rhodri Jervis et autres

Abstract The cycling performance of lithium‐sulfur (Li−S) batteries is hampered by polysulfide dissolution which impacts the overall performance of Li−S batteries. Here we report the synthesis and characterization of polysulfide trapping cathode material for Li−S batteries based on Co3O4 nanocubes supported within …

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Operando Evolution of a Hybrid Metallic Alloy Interphase for Reversible Aqueous Zinc Batteries

Mingqiang Liu, Kai Yang, Qiming Xie, Nantao Hu et autres

Abstract Aqueous Zn‐ion batteries (AZIBs) are widely acknowledged as viable future energy storage solutions, particularly for low‐cost stationary applications. However, the interfacial instability of zinc anodes represents a major challenge to the commercial potential of Zn‐ion systems, promoting an array of side …

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Operando Evolution of a Hybrid Metallic Alloy Interphase for Reversible Aqueous Zinc Batteries

Mingqiang Liu, Kai Yang, Qiming Xie, Nantao Hu et autres

Abstract Aqueous Zn‐ion batteries (AZIBs) are widely acknowledged as viable future energy storage solutions, particularly for low‐cost stationary applications. However, the interfacial instability of zinc anodes represents a major challenge to the commercial potential of Zn‐ion systems, promoting an array of side …

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Shining Light on New Additives for Lithium Sulfur Batteries through Polysulfide Shuttle Tracking Operando Optical Fluorescence Microscopy

Kofi Coke, Roby Soni, Paul Robert Shearing, Thomas Samuel Miller

Lithium Sulfur (Li-S) batteries are uniquely poised to provide exciting new opportunities in the field of energy storage, possessing an impressive theoretical gravimetric specific capacity an order of magnitude greater than current lithium-ion batteries (1672 mA h g-1), and energy density over …

Predicting cell failure and performance decline in lithium-sulfur batteries using distribution of relaxation times analysis

Roby Soni, Ji Hu, James B. Robinson, Alexander J. E. Rettie et autres

While lithium-sulfur (Li-S) batteries are a promising next-generation technology, their complex chemistry means they can degrade and fail via numerous mechanisms. To minimize or overcome these modes of failure, we must develop tools that can differentiate between chemical processes in the operating …

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Highly Durable Membrane–Electrode-Assemblies Using High M w and Ether-Free Polyfluorene-Based Electrolytes for Anion Exchange Membrane Water Electrolyzer

Hidenori Kuroki, Shoji Miyanishi, Sreekanth Narayanaru, Roby Soni et autres

Water electrolysis technology, which produces hydrogen through electrolysis of water using electricity derived from renewable energy, is attracting attention as a way to realize a carbon-neutral society. Among water electrolysis systems, anion exchange membrane water electrolysis (AEMWE) can achieve high energy conversion …

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Highly Durable Membrane-Electrode-Assemblies Using High Mw and Ether-Free Polyfluorene-Based Electrolytes for Anion Exchange Membrane Water Electrolyzer

秀記 黒木, Hidenori Kuroki, 将史 宮西, Shoji Miyanishi et autres