A5014130940- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Sensor and Energy Harvesting Materials
- Advanced Battery Technologies Research
- Conducting polymers and applications
- Advanced battery technologies research
- Organic Electronics and Photovoltaics
- Supercapacitor Materials and Fabrication
- Electrocatalysts for Energy Conversion
- Tactile and Sensory Interactions
- Fiber-reinforced polymer composites
- Intermetallics and Advanced Alloy Properties
- Metal and Thin Film Mechanics
- Advanced Chemical Physics Studies
- Catalytic Processes in Materials Science
- Perovskite Materials and Applications
- Luminescence and Fluorescent Materials
- Advanced Photocatalysis Techniques
- Hydrogen Storage and Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Textile materials and evaluations
- CO2 Reduction Techniques and Catalysts
- Semiconductor materials and devices
- nanoparticles nucleation surface interactions
- Per- and polyfluoroalkyl substances research
Stanford University
2007-2025
Interface (United States)
2022
State Key Laboratory of Chemical Engineering
2018-2020
Zhejiang University
2018-2020
Nanchang Hangkong University
2012
State Key Laboratory of Powder Metallurgy
2007-2008
Central South University
2007-2008
Animals living in the extremely cold environment, such as polar bears, have shown amazing capability to keep warm, benefiting from their hollow hairs. Mimicking a strategy synthetic fibers would stimulate smart textiles for efficient personal thermal management, which plays an important role preventing heat loss and improving efficiency house warming energy consumption. Here, "freeze-spinning" technique is used realize continuous large-scale fabrication of with aligned porous structure,...
1,2-Dimethoxyethane (DME) is a common electrolyte solvent for lithium metal batteries. Various DME-based designs have improved long-term cyclability of high-voltage full cells. However, insufficient Coulombic efficiency at the Li anode and poor stability remain challenge DME electrolytes. Here, we report molecular design principle that utilizes steric hindrance effect to tune solvation structures Li+ ions. We hypothesized by substituting methoxy groups on with larger-sized ethoxy groups,...
Artificial skin that simultaneously mimics sensory feedback and mechanical properties of natural holds substantial promise for next-generation robotic medical devices. However, achieving such a biomimetic system can seamlessly integrate with the human body remains challenge. Through rational design engineering material properties, device structures, architectures, we realized monolithic soft prosthetic electronic (e-skin). It is capable multimodal perception, neuromorphic pulse-train signal...
ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTAn X-ray Photoelectron Spectroscopy Primer for Solid Electrolyte Interphase Characterization in Lithium Metal AnodesSolomon T. OyakhireSolomon OyakhireDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesMore by Solomon Oyakhirehttps://orcid.org/0000-0002-3189-5949, Huaxin GongHuaxin GongDepartment Gonghttps://orcid.org/0000-0002-2493-0793, Yi Cui*Yi CuiDepartment Materials Science and StatesStanford...
Ice-templating holds promise to become a powerful technique construct high-performance bioinspired materials. Both ice nucleation and growth during the freezing process are crucial for final architecture of ice-templated material. However, effective ways control these two very important factors still lacking. Here, we demonstrate that successive preferential can be realized by introducing wettability gradient on cold finger. A bulk porous material with long-range lamellar pattern was...
Abstract Lithium–sulfur (Li–S) batteries involve a reversible conversion reaction between sulfur and lithium sulfide (Li 2 S) via series of soluble polysulfide intermediates (LiPSs), enabling high theoretical specific capacity 1675 mAh g –1 . However, this process exhibits large polarization low utilization suffers critical fade. The primary approach to tackle the problem has so far been infiltrate into nanostructured carbon. most studies using porous carbon as host materials have tested...
A fundamental challenge, shared across many energy storage devices, is the complexity of electrochemistry at electrode–electrolyte interfaces that impacts Coulombic efficiency, operational rate capability, and lifetime. Specifically, in energy-dense lithium metal batteries, charging/discharging process results structural heterogeneities anode, leading to battery failure by short-circuit capacity fade. In this work, we take advantage organic cations with lower reduction potential than build...
Lithium metal could provide ∼10 times the theoretical specific capacity compared to graphite. However, despite recent progress in improving Coulombic efficiency (CE), metallic lithium still suffers from poor cyclic stability at high current densities, which limits applications of lithium-metal anodes high-power scenarios. Here we report stable cycling under densities and realistic cell conditions based on a flower-like nanostructured hard carbon host (CF). CF was both intercalated with ions...
Lithium–sulfur (Li-S) batteries with high energy density and low cost are promising for next-generation storage. However, their cycling stability is plagued by the solubility of lithium polysulfide (LiPS) intermediates, causing fast capacity decay severe self-discharge. Exploring electrolytes LiPS has shown results toward addressing these challenges. here, we report that moderate more effective simultaneously limiting shuttling effect achieving good Li-S reaction kinetics. We explored a...
Abstract Polymer semiconductors (PSCs) are essential active materials in mechanically stretchable electronic devices. However, many exhibit low fracture strain due to their rigid chain conformation and the presence of large crystalline domains. Here, a PSC/elastomer blend, poly[((2,6‐bis(thiophen‐2‐yl)‐3,7‐bis(9‐octylnonadecyl)thieno[3,2‐b]thieno[2′,3′:4,5]thieno[2,3‐d]thiophene)‐5,5′‐diyl)(2,5‐bis(8‐octyloctadecyl)‐3,6‐di(thiophen‐2‐yl)pyrrolo[3,4‐c]pyrrole‐1,4‐dione)‐5,5′‐diyl]]...
In the quest for high-capacity battery electrodes, addressing capacity loss attributed to isolated active materials remains a challenge. We developed an approach substantially recover in silicon electrodes and used voltage pulse reconnect lithium-silicon (Li
Abstract Numerous strategies are developed to impart stretchability polymer semiconductors. Although these methods improve the ductility, mobility, and stability of such stretchable semiconductors, they nonetheless still need further improvement. Here, it is shown that 2,3,5,6‐tetrafluoro‐7,7,8,8‐tetracyanoquinodimethane (F4‐TCNQ) an effective molecular additive tune properties a diketopyrrolopyrrole‐based (DPP‐based) semiconductor. Specifically, addition F4‐TCNQ observed ductility...
Abstract Lithium metal batteries are next‐generation energy storage devices that rely on the stable electrodeposition of lithium during charging process. The major challenge associated with this battery chemistry is related to uneven deposition leads dendritic growth and poor coulombic efficiency (CE). A promising strategy for addressing utilizing a polymer coating anodic surface. While several works in past have evaluated coatings, requirements design still unclear. In work, effect dynamics...
Flower-like polyacrylonitrile (PAN) particles have shown promising performance for numerous applications, including sensors, catalysis, and energy storage. However, the detailed formation process of these unique structures during polymerization has not been investigated. Here, we elucidate flower-like PAN through a series in situ ex experiments. We following key findings. First, lamellar petals within were predominantly orthorhombic crystals. Second, branching lamellae particle arose from...
The development of new resist materials is vital to fabrication techniques for next-generation microelectronics. Inorganic resists are promising candidates because they have higher etch resistance, more impervious pattern collapse, and absorbing extreme ultraviolet (EUV) radiation than organic resists. However, there limited understanding about how behave under irradiation. In this work, a Hf-based hybrid thin film resist, known as "hafnicone", deposited from the vapor-phase via molecular...
Perfluoroalkyls (PFAS) continue to emerge as a global health threat making their effective detection and capture extremely important. Though metal-organic frameworks (MOFs) have stood out promising class of porous materials for sensing PFAS, limits remain insufficient fundamental understanding mechanisms warrants further investigation. Here, we show the use 2D conductive MOF film based on copper hexahydroxy triphenylene (Cu-HHTP) fabricate chemiresistive devices detecting PFAS in drinking...
Abstract Flexible pressure sensors are an essential part of robotic skin for human–machine interfaces, wearables, and implantable biomedical devices. However, the desirable characteristics high sensitivity, conformability, good scalability often mutually exclusive. Here, a highly sensitive flexible sensor that can be easily fabricated by coating carbon flower elastomer composite is presented. The made from uniform‐sized particles exhibits contact‐based mechanism sensing, as opposed to...
Stretchable polymer semiconductors are essential materials to realize soft skin-like electronics. However, most high-mobility semiconducting polymers suffer from poor stretchability and strain-dependent charge carrier mobility. Herein, we report an approach improve the of while maintaining The strain independent performance was accomplished by incorporating a nontoxic small molecule, namely triacetin (TA), into conjugated polymers. We observed that TA molecules substantially increased...