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Engineering electro-crystallization orientation and surface activation in wide-temperature zinc ion supercapacitors

Author

Listed:
  • Lulu Yao

    (University of California, San Diego)

  • Nandu Koripally

    (University of California, San Diego)

  • Chanho Shin

    (University of California, San Diego)

  • Anthony Mu

    (University of California, San Diego)

  • Zheng Chen

    (University of California, San Diego
    University of California, San Diego
    University of California San Diego)

  • Kaiping Wang

    (University of California, San Diego)

  • Tse Nga Ng

    (University of California, San Diego
    University of California, San Diego
    University of California San Diego)

Abstract

Matching the capacity of the anode and cathode is essential for maximizing electrochemical cell performance. This study presents two strategies to balance the electrode utilization in zinc ion supercapacitors, by decreasing dendritic loss in the zinc anode while increasing the capacity of the activated carbon cathode. The anode current collector was modified with copper nanoparticles to direct zinc plating orientation and minimize dendrite formation, improving the Coulombic efficiency and cycle life. The cathode was activated by an electrolyte reaction to increase its porosity and gravimetric capacity. The full cell delivered a specific energy of 192 ± 0.56 Wh kg−1 at a specific power of 1.4 kW kg−1, maintaining 84% capacity after 50,000 full charge-discharge cycles up to 2 V. With a cumulative capacity of 19.8 Ah cm−2 surpassing zinc ion batteries, this device design is particularly promising for high-endurance applications, including un-interruptible power supplies and energy-harvesting systems that demand frequent cycling.

Suggested Citation

  • Lulu Yao & Nandu Koripally & Chanho Shin & Anthony Mu & Zheng Chen & Kaiping Wang & Tse Nga Ng, 2025. "Engineering electro-crystallization orientation and surface activation in wide-temperature zinc ion supercapacitors," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58857-5
    DOI: 10.1038/s41467-025-58857-5
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    1. Xinhua Zheng & Zaichun Liu & Jifei Sun & Ruihao Luo & Kui Xu & Mingyu Si & Ju Kang & Yuan Yuan & Shuang Liu & Touqeer Ahmad & Taoli Jiang & Na Chen & Mingming Wang & Yan Xu & Mingyan Chuai & Zhengxin , 2023. "Constructing robust heterostructured interface for anode-free zinc batteries with ultrahigh capacities," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Huajun Tian & Guangxia Feng & Qi Wang & Zhao Li & Wei Zhang & Marcos Lucero & Zhenxing Feng & Zi-Le Wang & Yuning Zhang & Cheng Zhen & Meng Gu & Xiaonan Shan & Yang Yang, 2022. "Three-dimensional Zn-based alloys for dendrite-free aqueous Zn battery in dual-cation electrolytes," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
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