Structural water and disordered structure promote aqueous sodium-ion energy storage in sodium-birnessite

Xiaoqiang Shan; Fenghua Guo; Daniel S. Charles; Zachary Lebens-Higgins; Sara Abdel Razek; Jinpeng Wu; Wenqian Xu; Wanli Yang; Katharine L. Page; Joerg C. Neuefeind; Mikhail Feygenson; Louis F.J. Piper; Xiaowei Teng

doi:10.1038/s41467-019-12939-3

Structural water and disordered structure promote aqueous sodium-ion energy storage in sodium-birnessite

Xiaoqiang Shan, Fenghua Guo, Daniel S. Charles, Zachary Lebens-Higgins, Sara Abdel Razek, Jinpeng Wu, Wenqian Xu, Wanli Yang, Katharine L. Page, Joerg C. Neuefeind, Mikhail Feygenson, Louis F.J. Piper, Xiaowei Teng

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

Birnessite is a low-cost and environmentally friendly layered material for aqueous electrochemical energy storage; however, its storage capacity is poor due to its narrow potential window in aqueous electrolyte and low redox activity. Herein we report a sodium rich disordered birnessite (Na_0.27MnO₂) for aqueous sodium-ion electrochemical storage with a much-enhanced capacity and cycling life (83 mAh g⁻¹ after 5000 cycles in full-cell). Neutron total scattering and in situ X-ray diffraction measurements show that both structural water and the Na-rich disordered structure contribute to the improved electrochemical performance of current cathode material. Particularly, the co-deintercalation of the hydrated water and sodium-ion during the high potential charging process results in the shrinkage of interlayer distance and thus stabilizes the layered structure. Our results provide a genuine insight into how structural disordering and structural water improve sodium-ion storage in a layered electrode and open up an exciting direction for improving aqueous batteries.

Original language	English
Article number	4975
Journal	Nature Communications
Volume	10
Issue number	1
DOIs	https://doi.org/10.1038/s41467-019-12939-3
State	Published - Dec 1 2019
Externally published	Yes

Funding

This work was supported by the US Department of Energy (DOE), Office of Science, Basic Energy Sciences under Award # DE-SC0010286 (X.T., X.S., F.G., D.C.). The research at Binghamton University is partially supported by NSF DMREF-1627583. This research used Beamline 17-BM-B of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The neutron scattering experiments were carried out at the Spallation Neutron Source, which is sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy, under Contract No. DE-AC05-00OR22725 with Oak Ridge National Laboratory.

Funders	Funder number
Advanced Photon Source
DOE Office of Science
NSF DMREF-1627583	DMREF-1627583
Office of Basic Energy Sciences
Office of Science User Facility operated
Scientific User Facilities Division
US Department of Energy
National Science Foundation	1627583
U.S. Department of Energy
Office of Science
Basic Energy Sciences	DE-SC0010286
Argonne National Laboratory
Binghamton University

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Shan, X., Guo, F., Charles, D. S., Lebens-Higgins, Z., Abdel Razek, S., Wu, J., Xu, W., Yang, W., Page, K. L., Neuefeind, J. C., Feygenson, M., Piper, L. F. J., & Teng, X. (2019). Structural water and disordered structure promote aqueous sodium-ion energy storage in sodium-birnessite. Nature Communications, 10(1), Article 4975. https://doi.org/10.1038/s41467-019-12939-3

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abstract = "Birnessite is a low-cost and environmentally friendly layered material for aqueous electrochemical energy storage; however, its storage capacity is poor due to its narrow potential window in aqueous electrolyte and low redox activity. Herein we report a sodium rich disordered birnessite (Na0.27MnO2) for aqueous sodium-ion electrochemical storage with a much-enhanced capacity and cycling life (83 mAh g−1 after 5000 cycles in full-cell). Neutron total scattering and in situ X-ray diffraction measurements show that both structural water and the Na-rich disordered structure contribute to the improved electrochemical performance of current cathode material. Particularly, the co-deintercalation of the hydrated water and sodium-ion during the high potential charging process results in the shrinkage of interlayer distance and thus stabilizes the layered structure. Our results provide a genuine insight into how structural disordering and structural water improve sodium-ion storage in a layered electrode and open up an exciting direction for improving aqueous batteries.",

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AU - Abdel Razek, Sara

AU - Wu, Jinpeng

AU - Xu, Wenqian

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AU - Page, Katharine L.

AU - Neuefeind, Joerg C.

AU - Feygenson, Mikhail

AU - Piper, Louis F.J.

AU - Teng, Xiaowei

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AB - Birnessite is a low-cost and environmentally friendly layered material for aqueous electrochemical energy storage; however, its storage capacity is poor due to its narrow potential window in aqueous electrolyte and low redox activity. Herein we report a sodium rich disordered birnessite (Na0.27MnO2) for aqueous sodium-ion electrochemical storage with a much-enhanced capacity and cycling life (83 mAh g−1 after 5000 cycles in full-cell). Neutron total scattering and in situ X-ray diffraction measurements show that both structural water and the Na-rich disordered structure contribute to the improved electrochemical performance of current cathode material. Particularly, the co-deintercalation of the hydrated water and sodium-ion during the high potential charging process results in the shrinkage of interlayer distance and thus stabilizes the layered structure. Our results provide a genuine insight into how structural disordering and structural water improve sodium-ion storage in a layered electrode and open up an exciting direction for improving aqueous batteries.

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Structural water and disordered structure promote aqueous sodium-ion energy storage in sodium-birnessite

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