Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–9 of 9 results
Advanced filters: Author: Deok-Hwang Kwon Clear advanced filters

  • Nanoscale filaments with a Magnéli structure are shown to be responsible for resistance switching in thin films of TiO2, and the properties of the filaments are directly observed during the switching process.

    • Deok-Hwang Kwon
    • Kyung Min Kim
    • Cheol Seong Hwang
    Research
    Nature Nanotechnology
    Volume: 5, P: 148-153

  • We suggest synaptic devices using cation migration along thickness direction in a new class of 2D layered materials. An electrochemically active metal, such as Ag and Cu, is used for the operation of the synaptic device and chromium thiophosphate (CrPS4) single crystal is used as an electrolyte material. Multi-stable resistive states, short-term plasticity, and long-term potentiation are observed by controlling external voltage pulse with height smaller than 0.3 V. Given that simple mechanical exfoliation can generate very thin CrPS4 layers, the vertical Ag/CrPS4/Au capacitor offers a promising inorganic synaptic device compatible with next-generation flexible neuromorphic technology.

    • Mi Jung Lee
    • Sangik Lee
    • Bae Ho Park
    ResearchOpen Access
    NPG Asia Materials
    Volume: 10, P: 23-30

  • The high energy densities of Li-rich cathodes are promising for Li-ion batteries, but voltage hysteresis limits their practical implementation. Voltage hysteresis is shown to be related to collective migration of metal ions, and isolating migration leads to high-capacity reversible cathodes.

    • Jianping Huang
    • Bin Ouyang
    • Gerbrand Ceder
    Research
    Nature Materials
    Volume: 22, P: 353-361

  • It is generally believed that fast Li-ion transport in batteries can only be achieved when the host material does not change much with the Li movement. Here the authors show that controlled and reversible changes in host structures upon cycling can actually be used to improve the battery kinetics.

    • Jianping Huang
    • Peichen Zhong
    • Gerbrand Ceder
    Research
    Nature Energy
    Volume: 6, P: 706-714

  • The average crystal structure largely governs the Li diffusion kinetics in well-ordered cathode materials. Here the authors show this rule does not hold true for cation-disordered analogues. Cation short-range order is not only ubiquitous but also controls the Li transport behavior.

    • Huiwen Ji
    • Alexander Urban
    • Gerbrand Ceder
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • There is an intensive search for high-performance cathode materials for rechargeable batteries. Here the authors report that oxyfluorides with partial spinel-like cation order, made from earth-abundant elements, display both exceptionally high energy and power.

    • Huiwen Ji
    • Jinpeng Wu
    • Gerbrand Ceder
    Research
    Nature Energy
    Volume: 5, P: 213-221

  • High-entropy ceramics are solid solutions offering compositional flexibility and wide variety of applicability. High-entropy concepts are shown to lead to substantial performance improvement in cation-disordered rocksalt-type cathodes for Li-ion batteries.

    • Zhengyan Lun
    • Bin Ouyang
    • Gerbrand Ceder
    Research
    Nature Materials
    Volume: 20, P: 214-221

  • Lithium-rich cathode materials in which manganese undergoes double redox could point the way for lithium-ion batteries to meet the capacity and energy density needs of portable electronics and electric vehicles.

    • Jinhyuk Lee
    • Daniil A. Kitchaev
    • Gerbrand Ceder
    Research
    Nature
    Volume: 556, P: 185-190

  • The performance of lithium-excess cation-disordered oxides as cathode materials relies on the extent to which the oxygen loss during cycling is mitigated. Here, the authors show that incorporating fluorine is an effective strategy which substantially improves the cycling stability of such a material.

    • Jinhyuk Lee
    • Joseph K. Papp
    • Gerbrand Ceder
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-10