• Energy Storage and Structural Battery

    We develop structural battery possessing both load bearing capability and energy storage function.
    Structural batteries are crucial to the next-generation transportation vehicles such as UAV, UAM, and electrical vehicles.

  • Goal

    We develop high-performance energy storage devices derived from diverse nanomaterials based on

    • 1.

      Transition metal carbides (MXenes) and Metal-Organic Frameworks

    • 2.

      Multi-dimensional transition metal oxides and sulfides

    • 3.

      Porous carbon materials (Covalent Triazine or Organic Frameworks)

    Energy Storage Structures
  • Approach

    • 1.

      Porous active materials such as Covalent Organic Frameworks, Covalent Triazine Frameworks, and Metal-Organic Frameworks

    • 2.

      Growth of transition metal oxides/sulfides/carbides

    • 3.

      Carbon fabrics based structural electrodes with mechanical load bearing capability

    Energy Storage Structures
  • Selected Publications

    • 1.

      M. Mahato†, S. Nam†, R. Tabassian, S. Oh, V. H. Nguyen, and I.-K. Oh*
      Electronically Conjugated Multifunctional Covalent Triazine Framework for Unprecedented CO2 Selectivity and High-Power Flexible Supercapacitor
      ADVANCED FUNCTIONAL MATERIALS, Vol. 32, Issue 5 (2022)

    • 2.

      P. Thangasamy, S. Oh, S. Nam, H. Randriamahazaka, and I.-K. Oh*
      Ferrocene-Incorporated Cobalt Sulfide Nanoarchitecture for Superior Oxygen Evolution Reaction
      Small, Vol. 16, Issue 31 (2020)

    • 3.

      S. Oh, V. H. Nguyen, V.-T. Bui, S. Nam, M. Mahato, and I.-K. Oh*
      Intertwined Nanosponge Solid-State Polymer Electrolyte for Rollable and Foldable Lithium-Ion Batteries
      ACS Applied Materials & Interfaces, Vol. 12, Issue 10, Page 11657-11668 (2020)

    • 4.

      S. Nam†, S. Umrao†, S. Oh, K. H. Shin, H. S. Park, and I.-K. Oh*
      Sonochemical self-growth of functionalized titanium carbide nanorods on Ti3C2 nanosheets for high capacity anode for lithium-ion batteries

    • 5.

      J.-M. Son†, S. Oh†, S.-H. Bae, S. Nam, and I.-K. Oh*
      A Pair of NiCo2O4 and V2O5 Nanowires Directly Grown on Carbon Fabric for Highly Bendable Lithium-Ion Batteries
      Advanced Energy Materials, Vol. 9, Issue 18 (2019)

    • 6.

      S.-H. Bae, J.-E. Kim, H. Randriamahazaka, S.-Y. Moon, J.-Y. Park, and I.-K. Oh*
      Seamlessly Conductive 3D Nanoarchitecture of Core–Shell Ni-Co Nanowire Network for Highly Efficient Oxygen Evolution
      Advanced Energy Materials, Vol. 7, Issue 1 (2017) Selected as Front Cover Image

  • What is Energy Storage Structures?

    Energy storage is the device that provides a source of electrical energy by direct conversion of chemical energy based on an electrochemical redox reaction, and it includes Lithium-Ion Batteries (LIBs), Sodium-Ion Batteries (SIBs), Lithium-Sulfur Batteries (LSBs), Lithium-Metal Batteries (LMBs), and Capacitors. Structural battery indicates the energy storage cells embedded into a composite structure efficiently so as to be used as both load-bearing and energy storage material. We are interested in electrode materials and solid-state electrolytes, which can be utilized in structural batteries. Regarding electrode materials, our focus is on versatile active materials based on Metal Oxide, Transition metal carbides (MXenes), Metal-Organic Frameworks (MOFs), and Covalent Organic and Triazine Frameworks (COFs, CTFs). For solid-state electrolytes for structural batteries, we are studying the mechanically flexible ones based on polymers, such as PEO, PVA, and Nafion, acting as backbone structures. As a complete application, we are trying to demonstrate structural batteries with both superior and stable electrochemical performance and mechanical load-bearing multifunctionality which are flexible, bendable, rollable, and foldable.