Current collector interphase design for high-energy and stable anode-less sodium batteries

Jiafeng Ruan, Jiaming Hu, Qin Li, Sainan Luo, Jinyu Yang, Yang Liu, Yun Song, Shiyou Zheng, Dalin Sun, Fang Fang and Fei Wang ()
Additional contact information
Jiafeng Ruan: Fudan University
Jiaming Hu: Fudan University
Qin Li: Fudan University
Sainan Luo: University of Shanghai for Science and Technology
Jinyu Yang: Fudan University
Yang Liu: Fudan University
Yun Song: Fudan University
Shiyou Zheng: University of Shanghai for Science and Technology
Dalin Sun: Fudan University
Fang Fang: Fudan University
Fei Wang: Fudan University

Nature Sustainability, 2025, vol. 8, issue 5, 530-541

Abstract: Abstract Sodium-ion batteries have emerged as one of the most promising next-generation energy storage systems. However, their widespread application is hindered by the low energy density and high cost of hard carbon anodes. Anode-free designs offer a potential solution but typically suffer from poor cycling performance due to uncontrolled Na plating and inefficient stripping. Here we report a hard-carbon-derived interphase on an aluminium current collector to construct an anode-less sodium battery (ALSB) that maintains high energy density, reduces costs and enhances cycling stability. Remarkably, the interphase layer with a low dielectric constant and strong Na interaction enables homogeneous Na nucleation, crack-free plating and efficient stripping, thereby minimizing active Na loss during cycling. As a result, our ALSB maintains good stability for up to 900 cycles and 2.3-Ah-level ALSBs show an energy density of 203 Wh kg−1. Our findings pave the way for more sustainable batteries with competitive energy density, extended cycle life and lower costs.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41893-025-01545-5 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natsus:v:8:y:2025:i:5:d:10.1038_s41893-025-01545-5

Ordering information: This journal article can be ordered from
https://www.nature.com/natsustain/

DOI: 10.1038/s41893-025-01545-5

Access Statistics for this article

Nature Sustainability is currently edited by Monica Contestabile

More articles in Nature Sustainability from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().