Diamane Facilitated the Stability of Sodium Metal Anodes
Sodium metal anodes hold great promise for next-generation batteries due to their high theoretical capacity and low working potential, yet notorious Na dendrites impose tremendous safety concerns. Here, diamane (two-dimensional diamond) nanoflakes modulating the polypropylene (PP) separator are implemented to address this issue. The diamane physically exfoliated from commercially available diamond exhibits its superiority in suppressing the Na dendrites formation by stable sp<sup>3</sup> carbon surface. Using the PP/diamane separator, Na metal anodes demonstrate exceptional stability for over 1000 h at an ultrahigh current density of 20 mA cm<sup>-2</sup>. Notably, the separator also ensures stable cycling of Na metal anodes at an elevated temperature of 60 °C. Encouragingly, the full cell of Na||PP/diamane||Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>@C delivers a high capacity of 81.6 mAh g<sup>-1</sup> with a minimal decay of 0.003% per cycle after 1000 cycles. These results provide a promising strategy for realizing stable Na metal anodes via the incorporation of diamane nanoflakes.
Authors
- Aijiao Li (ORCID: https://orcid.org/0000-0003-1634-7490)
- Zhenxin Huang (ORCID: https://orcid.org/0009-0007-7061-7259)
- Yumeng Shi (ORCID: https://orcid.org/0000-0002-9623-3778)
- Chao Fang (ORCID: https://orcid.org/0000-0001-7322-1566)
- Zhuangfei Zhang (ORCID: https://orcid.org/0000-0002-1148-0455)
- Chongxin Shan (ORCID: https://orcid.org/0000-0001-7119-5325)
- Hui Ying Yang (ORCID: https://orcid.org/0000-0002-2244-8231)
- Longhui Zeng (ORCID: https://orcid.org/0009-0008-2761-5570)
- Tingting Xu (ORCID: https://orcid.org/0000-0002-9721-3971)
- Ye Wang (ORCID: https://orcid.org/0000-0002-5692-3117)
- Hui Wang (ORCID: https://orcid.org/0000-0002-5703-8574)
- Xinjian Li (ORCID: https://orcid.org/0000-0001-5338-7112)
- Xiaobing Liu (ORCID: https://orcid.org/0000-0002-0680-1947)
- Dezhi Kong
- Nan Shen
Institutions
- Singapore University of Technology and Design (SG)
- Shenzhen University (CN)
- Qufu Normal University (CN)
- Beijing Jiaotong University (CN)
- Zhengzhou University (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-06-03
- DOI
- https://doi.org/10.1021/acs.nanolett.5c01172
- Citations
- 2
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Henan Province
- Education Department of Henan Province
- Science and Technology Department of Henan Province