Bruce Dunn
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View article: The Role of Dynamic Solvent Swelling in Electrochemical Doping of Semiconducting Polymers
The Role of Dynamic Solvent Swelling in Electrochemical Doping of Semiconducting Polymers Open
Semiconducting polymers are of interest due to their solution processibility and broad electronic applications. Electrochemistry allows these wide bandgap semiconductors to be converted to conducting polymers by doping such polymers at var…
View article: Dependent scattering and fractal microstructure determine the transparency of aerogel monoliths
Dependent scattering and fractal microstructure determine the transparency of aerogel monoliths Open
This study reveals how dependent scattering and microstructure significantly affect electromagnetic wave propagation through aerogel monoliths, contributing to their transparency. Light scattering by particle ensembles is considered “depen…
View article: Recent Advances in Scalable, High‐Mass Loaded Electrodes for Grid‐Scale Energy Storage
Recent Advances in Scalable, High‐Mass Loaded Electrodes for Grid‐Scale Energy Storage Open
The increasing electrification of daily life as well as the intermittent characteristic of renewable energy sources require viable solutions for grid‐scale energy storage. Critical considerations for grid storage applications are electrode…
View article: Stable cycling of high-mass loaded MnO<sub>2</sub> electrodes for sodium-ion batteries
Stable cycling of high-mass loaded MnO<sub>2</sub> electrodes for sodium-ion batteries Open
MnO 2 cathode materials achieve stable cycling in diglyme-based electrolytes by suppressing Mn dissolution. This superior stability is demonstrated in high mass-loaded MnO 2 electrodes exhibiting high areal energy density.
View article: Redox Materials for Electrochemical Capacitors
Redox Materials for Electrochemical Capacitors Open
Electrochemical capacitors are known for their high power density and cyclability, and various redox reactions can be utilized to improve their energy density. A great variety of redox materials have been investigated recently for use in e…
View article: High Capacitance Porous Ruthenium Nitride Films with High Rate Capability for Micro‐Supercapacitors
High Capacitance Porous Ruthenium Nitride Films with High Rate Capability for Micro‐Supercapacitors Open
The demand for high‐performance energy storage devices to power Internet of Things applications has driven intensive research on micro‐supercapacitors (MSCs). In this study, RuN films made by magnetron sputtering as an efficient electrode …
View article: Thermally Insulating Transparent Barrier (THINNER) coatings on single pane windows
Thermally Insulating Transparent Barrier (THINNER) coatings on single pane windows Open
Conventional silica aerogel monoliths can provide remarkable thermal insulation but the presence of large pores (> 30 nm) tends to scatter visible light and render the material opaque or translucent instead of transparent. In addition, the…
View article: Establishing reaction networks in the 16-electron sulfur reduction reaction
Establishing reaction networks in the 16-electron sulfur reduction reaction Open
The sulfur reduction reaction (SRR) plays a central role in high-capacity lithium sulfur (Li-S) batteries. The SRR involves an intricate, 16-electron conversion process featuring multiple lithium polysulfide intermediates and reaction bran…
View article: Structure and Electrochemical Properties of Bronze Phase Materials Containing Two Transition Metals
Structure and Electrochemical Properties of Bronze Phase Materials Containing Two Transition Metals Open
Bronze phase transition-metal oxides have recently attracted attention as high-rate lithium-ion battery anode materials. Their crystal structures are distinguished by large tunnels and an open framework, facilitating lithium-ion diffusion …
View article: Microcalorimetry electrothermal impedance spectroscopy (ETIS) informs entropy evolution at individual electrodes of PNb9O25 or TiNb2O7 battery cells
Microcalorimetry electrothermal impedance spectroscopy (ETIS) informs entropy evolution at individual electrodes of PNb9O25 or TiNb2O7 battery cells Open
This study proposes a novel and fast microcalorimetry electrothermal impedance spectroscopy (ETIS) method based on heat generation rate measurements at each electrode of a lithium-ion battery cell. This new method is capable of retrieving …
View article: Mesoporous nanocrystalline film architecture for capacitive storage devices
Mesoporous nanocrystalline film architecture for capacitive storage devices Open
A mesoporous, nanocrystalline, metal oxide construct particularly suited for capacitive energy storage that has an architecture with short diffusion path lengths and large surface areas and a method for production are provided. Energy dens…
View article: High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance
High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance Open
Vanadium nitride (VN) electrode displays high‐rate, pseudocapacitive responses in aqueous electrolytes, however, it remains largely unclear in nonaqueous, Na + ‐based electrolytes. The traditional view supposes a conversion‐type mechanism …
View article: Characterization of Fragility in Silica-Based Ionogels
Characterization of Fragility in Silica-Based Ionogels Open
International audience
View article: Innovative Design and Manufacturing of 2.5D Battery with High Energy and Power Density (Final Report)
Innovative Design and Manufacturing of 2.5D Battery with High Energy and Power Density (Final Report) Open
The goal of this project is to develop cathode inks, to be used in additive manufacturing (AM), that lead to a low-cost, fast manufacturing processes for a new type of non-planar, 2.5D lithium-ion battery (LIB). 2.5D batteries, comprised o…
View article: Bubble‐Channeling Electrophoresis of Honeycomb‐Like Chitosan Composites
Bubble‐Channeling Electrophoresis of Honeycomb‐Like Chitosan Composites Open
A chitosan composite with a vertical array of pore channels is fabricated via an electrophoretic deposition (EPD) technique. The composite consists of chitosan and polyethylene glycol, as well as nanoparticles of silver oxide and silver. T…
View article: Intrinsic Surface-Redox Sodium-Ion Storage Mechanism of Anatase Titanium Oxide toward High-Rate Capability
Intrinsic Surface-Redox Sodium-Ion Storage Mechanism of Anatase Titanium Oxide toward High-Rate Capability Open
Sodium-ion storage technologies are promising candidates for large-scale grid systems owing to the abundance and low cost of sodium. However, compared to well-understood lithium-ion storage mechanisms, sodium-ion storage remains relatively…
View article: Temperature-Dependent Reaction Pathways in FeS<sub>2</sub>: Reversibility and the Electrochemical Formation of Fe<sub>3</sub>S<sub>4</sub>
Temperature-Dependent Reaction Pathways in FeS<sub>2</sub>: Reversibility and the Electrochemical Formation of Fe<sub>3</sub>S<sub>4</sub> Open
The present study has used a variety of characterization techniques to determine the products and reaction pathways involved in the rechargeable Li–FeS2 system. We revisit both the initial lithiation and subsequent cycling of FeS2 employin…
View article: Understanding the Electrochemical Performance of FeS<sub>2</sub> Conversion Cathodes
Understanding the Electrochemical Performance of FeS<sub>2</sub> Conversion Cathodes Open
Conversion cathodes represent a viable route to improve rechargeable Li+ battery energy densities, but their poor electrochemical stability and power density have impeded their practical implementation. Here, we explore the impact cell fab…
View article: A Pseudo-Two-Dimensional (P2D) Model for FeS2 Conversion Cathode Batteries
A Pseudo-Two-Dimensional (P2D) Model for FeS2 Conversion Cathode Batteries Open
Conversion cathode materials are gaining interest for secondary batteries due to their high theoretical energy and power density. However, practical application as a secondary battery material is currently limited by practical issues such …
View article: Pseudo-Two-Dimensional Modeling of Lithium-Ion Conversion Cathode Materials.
Pseudo-Two-Dimensional Modeling of Lithium-Ion Conversion Cathode Materials. Open
material particles by incorporating a variable active surface area and effective particle radius. Using the model, we show that the leading loss mechanisms for FeS2 are associated with solid-state diffusion and electrical transport limitat…
View article: Practical Actions to Operationalize the One Health Approach in the Asian Development Bank
Practical Actions to Operationalize the One Health Approach in the Asian Development Bank Open
This working paper explains the concept of One Health and how it aligns with ADB’s Strategy 2030 and operational priorities for development efforts in Asia and the Pacific. The One Health approach has the potential to transform the work of…
View article: Investigating the Perovskite Ag1-3xLaxNbO3 as a High-Rate Negative Electrode for Li-Ion Batteries
Investigating the Perovskite Ag1-3xLaxNbO3 as a High-Rate Negative Electrode for Li-Ion Batteries Open
The broader development of the electric car for tomorrow’s mobility requires the emergence of new fast-charging negative electrode materials to replace graphite in Li-ion batteries. In this area, the design of new compounds using innovativ…