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Nanostructured niobium-doped nickel-rich multiphase positive electrode active material for high-power lithium-based batteries

A two-step doping strategy for preparing Nb-doped Ni-rich positive electrode active materials forms nanosized grains and enables reversible multiphase transitions, improving lithium-ion transport and high-power performance of Li-based batteries.

Nam-Yung Park
Geon-Tae Park
Yang-Kook Sun
Research23 Dec 2025
Nature Nanotechnology

P: 1-9
Over 0.1 W root-mean-square output achieved in magneto-mechano-electric generators using Mn-doped PIN-PMN-PT single crystals

Here, the authors report magneto-mechano-electric energy generation based on Mn-doped PIN–PMN–PT single crystals. Their device provides sufficiently high and stable output power density for efficient self-powered operation of wireless IoT systems and other large-scale energy harvesting applications.

Srinivas Pattipaka
Sung-Dae Kim
Geon-Tae Hwang
ResearchOpen Access11 Dec 2025
Nature Communications

Volume: 16, P: 1-13
Zero-strain Mn-rich layered cathode for sustainable and high-energy next-generation batteries

Nickel-heavy battery chemistries raise concerns over cost, supply risk and environmental impact. A new design cuts nickel use by over one-third, replacing it with more abundant manganese—without sacrificing performance.

Geon-Tae Park
Nam-Yung Park
Yang-Kook Sun
ResearchOpen Access26 Aug 2025
Nature Energy

Volume: 10, P: 1215-1225
Author Correction: Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge

Un-Hyuck Kim
Geon-Tae Park
Yang-Kook Sun
Amendments and Corrections09 Dec 2020
Nature Energy

Volume: 6, P: 115
Introducing high-valence elements into cobalt-free layered cathodes for practical lithium-ion batteries

Cobalt-free cathodes are highly desirable for the sustainable development of rechargeable batteries. Here the authors report a high-performance cathode by introducing a small amount of Mo into a layered Li(Ni_0.9Mn_0.1)O₂ material that enables a long-term, high-voltage Li-ion battery.

Geon-Tae Park
Been Namkoong
Yang-Kook Sun
Research05 Sept 2022
Nature Energy

Volume: 7, P: 946-954
Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge

Nickel-rich layered oxide cathodes are at the forefront of the development of automobile batteries. The authors report an atomic and microstructural engineering design for a Li[Ni_0.90Co_0.09Ta_0.01]O₂ cathode that exhibits outstanding long-term cyclability and high energy at full depth of discharge in full cells.

Un-Hyuck Kim
Geon-Tae Park
Yang-Kook Sun
Research21 Sept 2020
Nature Energy

Volume: 5, P: 860-869

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Nanostructured niobium-doped nickel-rich multiphase positive electrode active material for high-power lithium-based batteries

Over 0.1 W root-mean-square output achieved in magneto-mechano-electric generators using Mn-doped PIN-PMN-PT single crystals

Zero-strain Mn-rich layered cathode for sustainable and high-energy next-generation batteries

Author Correction: Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge

Introducing high-valence elements into cobalt-free layered cathodes for practical lithium-ion batteries

Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge

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