Anion Defects Engineering of Ternary Nb-Based Chalcogenide Anodes Toward High-Performance Sodium-Based Dual-Ion Batteries

Yangjie Liu; Min Qiu; Xiang Hu; Jun Yuan; Weilu Liao; Liangmei Sheng; Yuhua Chen; Yongmin Wu; Hongbing Zhan; Zhenhai Wen

doi:10.1007/s40820-023-01070-0

Anion Defects Engineering of Ternary Nb-Based Chalcogenide Anodes Toward High-Performance Sodium-Based Dual-Ion Batteries

Nanomicro Lett. 2023 Apr 15;15(1):104. doi: 10.1007/s40820-023-01070-0.

Authors

Yangjie Liu^{1

2}, Min Qiu^{2

3}, Xiang Hu^{1

2}, Jun Yuan^{1

2}, Weilu Liao², Liangmei Sheng⁴, Yuhua Chen⁴, Yongmin Wu⁴, Hongbing Zhan⁵, Zhenhai Wen⁶

Affiliations

¹ College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, People's Republic of China.
² CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Materials and Techniques Toward Hydrogen Energy, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, People's Republic of China.
³ Fujian Normal University, Fuzhou, 350108, People's Republic of China.
⁴ State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power Sources, 2965 Dongchuan Road, Shanghai, 200245, People's Republic of China.
⁵ College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, People's Republic of China. hbzhan@fzu.edu.cn.
⁶ CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Materials and Techniques Toward Hydrogen Energy, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, People's Republic of China. wen@fjirsm.ac.cn.

Abstract

Highlights:

We developed an efficient and extensible strategy to produce the single-phase ternary NbSSe nanohybrids with defect-enrich microstructure.
The anionic-Se doping play a key role in effectively modulating the electronic structure and surface chemistry of NbS₂ phase, including the increased interlayers distance (0.65 nm), the enhanced intrinsic electrical conductivity (3.23 × 10³ S m^-1) and extra electroactive defect sites.
The NbSSe/NC composite as anode exhibits rapid Na+ diffusion kinetics and increased capacitance behavior for Na⁺ storage, resulting in high reversible capacity and excellent cycling stability.

Abstract: Sodium-based dual-ion batteries (SDIBs) have gained tremendous attention due to their virtues of high operating voltage and low cost, yet it remains a tough challenge for the development of ideal anode material of SDIBs featuring with high kinetics and long durability. Herein, we report the design and fabrication of N-doped carbon film-modified niobium sulfur–selenium (NbSSe/NC) nanosheets architecture, which holds favorable merits for Na⁺ storage of enlarged interlayer space, improved electrical conductivity, as well as enhanced reaction reversibility, endowing it with high capacity, high-rate capability and high cycling stability. The combined electrochemical studies with density functional theory calculation reveal that the enriched defects in such nanosheets architecture can benefit for facilitating charge transfer and Na⁺ adsorption to speed the electrochemical kinetics. The NbSSe/NC composites are studied as the anode of a full SDIBs by pairing the expanded graphite as cathode, which shows an impressively cyclic durability with negligible capacity attenuation over 1000 cycles at 0.5 A g⁻¹, as well as an outstanding energy density of 230.6 Wh kg⁻¹ based on the total mass of anode and cathode.

Supplementary Information: The online version contains supplementary material available at 10.1007/s40820-023-01070-0.

Keywords: Anion defects engineering; Anode; Nanosheets architecture; NbSSe; Sodium-based dual-ion battery.