Electrochemical Sodiation/Desodiation into Mn 3 O 4 Nanoparticles.

Autor: Mahamad Yusoff NF; Energy Storage Research Group, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia., Idris NH; Energy Storage Research Group, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia., Md Din MF; Department of Electrical and Electronic Engineering, Faculty of Engineering, National Defence University of Malaysia, Kem Sungai Besi, 57000 Kuala Lumpur, Malaysia., Majid SR; Center for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia., Harun NA; Advanced Nano Materials (ANOMA) Research Group, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia., Rahman MM; Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2020 Nov 03; Vol. 5 (45), pp. 29158-29167. Date of Electronic Publication: 2020 Nov 03 (Print Publication: 2020).
DOI: 10.1021/acsomega.0c03888
Abstrakt: Mn 3 O 4 is considered to be a promising anode material for sodium-ion batteries (SIBs) because of its low cost, high capacity, and enhanced safety. However, the inferior cyclic stability of the Mn 3 O 4 anode is a major challenge for the development of SIBs. In this study, a one-step solvothermal method was established to produce nanostructured Mn 3 O 4 with an average particle size of 21 nm and a crystal size of 11 nm. The Mn 3 O 4 obtained exhibits a unique architecture, consisting of small clusters composed of numerous tiny nanoparticles. The Mn 3 O 4 material could deliver high capacity (522 mAh g -1 at 100 mA g -1 ), reasonable cyclic stability (158 mAh g -1 after 200 cycles), and good rate capability (73 mAh g -1 at 1000 mA g -1 ) even without further carbon coating, which is a common exercise for most anode materials so far. The sodium insertion/extraction was also confirmed by a reversible conversion reaction by adopting an ex situ X-ray diffraction technique. This simple, cost-effective, and environmentally friendly synthesis technique with good electrochemical performance shows that the Mn 3 O 4 nanoparticle anode has the potential for SIB development.
Competing Interests: The authors declare no competing financial interest.
(© 2020 American Chemical Society.)
Databáze: MEDLINE
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