Universität zu Köln

Nzimande, Nkosikhona, Haruna, Aderemi, Mwonga, Patrick, Rasche, Bertold, Cummings, Franscious and Ozoemena, Kenneth, I (2021). Ceria-Spiderweb Nanosheets Unlock the Energy-Storage Properties in the Sleeping Triplite (Mn-2(PO4)F). ACS Appl. Energ. Mater., 4 (11). S. 13085 - 13098. WASHINGTON: AMER CHEMICAL SOC. ISSN 2574-0962

Full text not available from this repository.

Abstract

Rechargeable aqueous mobile-ion batteries (RAMIBs) are attractive next-generation battery technologies. Manganese fluorophosphate (triplite), Mn-2(PO4)F (MFP), and its ceria-and carbon-coated composites (i.e., MFP-CeO2 and MFP-C-CeO2), have been synthesized using a microwave-assisted hydrothermal process. The materials are thoroughly characterized using powder X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, high-resolution scanning electron microscopy (field-emission scanning electron microscopy), and energy-dispersive X-ray spectroscopy elemental mapping to prove the successful synthesis of the materials and confirm their morphologies and elemental compositions. These materials have been used to introduce environmentally friendly and low-cost ceria-enabled rechargeable aqueous sodium-ion batteries (CERASIBs) using zinc foil as the anode and sodium perchlorate as the water-in-salt electrolyte. The batteries offer a high voltage window (1.6-2.2 V), with MFP-C-CeO2 giving a higher specific capacity of similar to 195 mAh g(-1) than MFP-CeO2 (similar to 100 mAh g(-1)). However, MFP-CeO2 showed excellent cycling stability (ca. 99% capacity retention) compared to MFP-C-CeO2 (ca. 78% capacity retention) after 300 cycles due to the impressive structural stability of the MFP material, aided by the ceria coating. The difference in the electrochemical properties of the two materials is related to their different morphologies: the MPF-CeO2 material comprises micron-sized particles that consist of aggregated nanoparticles, while the MPF-C-CeO2 material exhibits mostly a nanoporous structure. The remarkable properties of the CERASIB promise to open doors of opportunities for the design and manufacturing of various lanthanoid-or rare-earth metal compound-enabled triplite-based cathode materials for the large-scale development of affordable RAMIBs involving various mobile ions (such as Na, Li, K, Zn, Mg, and Al) and accompanying zinc anode materials.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Nzimande, Nkosikhona UNSPECIFIED UNSPECIFIED UNSPECIFIED Haruna, Aderemi UNSPECIFIED UNSPECIFIED UNSPECIFIED Mwonga, Patrick UNSPECIFIED UNSPECIFIED UNSPECIFIED Rasche, Bertold UNSPECIFIED UNSPECIFIED UNSPECIFIED Cummings, Franscious UNSPECIFIED UNSPECIFIED UNSPECIFIED Ozoemena, Kenneth, I UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-578735
DOI:	10.1021/acsaem.1c02734
Journal or Publication Title:	ACS Appl. Energ. Mater.
Volume:	4
Number:	11
Page Range:	S. 13085 - 13098
Date:	2021
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	2574-0962
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ZINC-ION BATTERY; HIGH-PERFORMANCE; CRYSTAL-STRUCTURE; CATHODE MATERIAL; HIGH-CAPACITY; STABILITY Multiple languages Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57873