A5066945167- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Conducting polymers and applications
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Advanced Photocatalysis Techniques
- Fuel Cells and Related Materials
- Machine Learning in Materials Science
Pohang University of Science and Technology
2021-2024
Government of the Republic of Korea
2021
Abstract Li‐ion batteries (LIBs) have wide applications owing to their high‐energy density and stable cycle characteristics. Nevertheless, with the rapid expansion of electric vehicle market, issues such as explosion LIBs need secure a longer driving distance emerged. In this work, functional metal–organic frameworks (MOFs) are introduced separator in LIBs, which highly heat‐resistant polymer is fabricated through electrospinning. The MOFs can scavenge impurities (including gas, water,...
Silicon (Si) anodes offer a high specific capacity (> 3,500 mA h g-1), but severe volume changes during cycling and poor intrinsic conductivity hinder commercialization. Carbon nanotubes (CNTs) are commonly incorporated to improve the electronic of Si electrodes, their tendency aggregate in polar solvent-based slurries leads non-uniform electrodes. To address this, we synthesize polyacrylamide-grafted CNTs (PAM-g-CNTs) by covalently attaching hydrophilic acrylamide monomers CNT surfaces....
Abstract Aqueous zinc metal batteries (AZMBs) are emerging energy storage systems that poised to replace conventional lithium‐ion owing their intrinsic safety, facile manufacturing process, economic benefits, and superior ionic conductivity. However, the issues of inferior anode reversibility dendritic plating during operation remain challenging for practical use AZMBs. Herein, a gel electrolyte based on zwitterionic poly(sulfobetaine methacrylate) (poly(SBMA)) dissolved with different...
Lithium metal anode (LMA) emerges as a promising candidate for lithium (Li)-based battery chemistries with high-energy-density. However, inhomogeneous charge distribution from the unbalanced ion/electron transport causes dendritic Li deposition, leading to "dead Li" and parasitic reactions, particularly at high utilization ratios (low negative/positive in full cells). Herein, an innovative LMA structural model deploying hyperporous/hybrid conductive architecture is proposed on single-walled...
For stable battery operation of silicon (Si)-based anodes, utilizing cross-linked three-dimensional (3D) network binders has emerged as an effective strategy to mitigate significant volume fluctuations Si particles. In the design binders, careful selection appropriate cross-linking agents is crucial maintaining a balance between robustness and functionality network. Herein, we strategically optimize 3D binder through comprehensive analysis agents. The proposed composed poly(vinyl alcohol)...
Lithium-based batteries are as promising energy storage systems. With the demands such large-scale system and high-energy-density for electrification, all components in battery have been recently developed.
The current high-capacity lithium-ion batteries (LIBs), reliant on flammable liquid electrolytes (LEs) and nickel-rich cathodes, are plagued by safety hazards, especially the risk of hazardous gas release stemming from internal side reactions. To address these concerns, an electron beam (E-beam)-induced gel polymer electrolyte (E-Gel) is introduced, employing dipentaerythritol hexaacrylate (DPH) as a bi-functional cross-linkable additive (CIA). dual roles DPH exploited through strategically...
Currently, high-capacity LIBs commonly employ LiPF 6 -based liquid electrolytes (LEs) and high-nickel (Ni) layered oxide cathodes, such as Li[Ni x Mn y Co 1-x-y ]O 2 (NCM, > 0.7). Although the LEs provide superior ionic conductivity, their intrinsic flammability potential for leakage pose significant safety challenges. In addition, generation of acidic species (e.g., POF 3 , PF 5 HF) from salt decomposition exacerbates degradation solid-electrolyte-interphase (SEI)...