University of Oulu

Haghighat-Shishavan, S., Nazarian-Samani, M., Nazarian-Samani, M., Hosseini-Shokouh, S. H., Maschmeyer, T., & Kim, K.-B. (2022). Realization of Sn2P2S6-carbon nanotube anode with high K+/Na+ storage performance via rational interface manipulation–induced shuttle-effect inhibition and self-healing. Chemical Engineering Journal, 435, 134965.

Realization of Sn₂P₂S₆-carbon nanotube anode with high K⁺/Na⁺ storage performance via rational interface manipulation–induced shuttle-effect inhibition and self-healing

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Author: Haghighat-Shishavan, Safa1; Nazarian-Samani, Masoud1; Nazarian-Samani, Mahboobeh1;
Organizations: 1Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
2Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu FI-90014, Finland
3School of Chemistry, University of Sydney, Sydney NSW 2006, Australia
Format: article
Version: accepted version
Access: embargoed
Persistent link:
Language: English
Published: Elsevier, 2022
Publish Date: 2024-01-30


Because the electrochemical performance of next-generation batteries is strongly affected by the electronic properties of their electrode materials, it is highly desirable to find ways to easily tune these properties. In this study, we synthesized a Mott–Schottky-type Sn₂P₂S₆-carbon nanotube heterojunction with many heterointerfaces and accelerated interfacial electron/ion transfer as the anode material for K-ion batteries (KIBs) and Na-ion batteries (NIBs). The constructive built-in electric fields directly affect the quality and composition of the solid-electrolyte interphase, preventing the entrapment of K⁺/Na⁺ ions inside the electrode during charging, the abnormal aggregation and coarsening of Sn nanoparticles, polyphosphide and polysulfide shuttling, and the accumulation of detrimental intermediate phases. Moreover, SnPS₃ nanocrystals experience reversible self-healing and regeneration during long-lasting recharge reactions. In the KIBs, the composite delivers an initial discharge capacity of 930 mAh g⁻¹ (at 0.05 A g⁻¹) and approximately 100% capacity retention at 1 A g⁻¹ after 600 cycles; in the NIBs, the composite delivers an initial discharge capacity of 1400 mAh g⁻¹ (at 0.1 A g⁻¹) and an 80.62% retention at 1 A g⁻¹ after 600 cycles. The concept implemented for the construction of heterostructures with regulated electronic band structures can be used to exploit the electrochemical properties of other emerging electrode materials.

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Series: Chemical engineering journal
ISSN: 1385-8947
ISSN-E: 1873-3212
ISSN-L: 1385-8947
Volume: 435
Article number: 134965
DOI: 10.1016/j.cej.2022.134965
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2019R1A2C1088424).
Copyright information: © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http:/