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We describe Na0.67Mn0.625Fe0.25Co0.125O2 (NMFCO), a P2-type sodium-ion battery cathode. Our composition, with significantly less Co than in an earlier study, shows discharge capacity close to 190 mAhg-1 and specific energy density exceeding…

材料科学 · 物理学 2024-08-06 William Rexhausen , Christian Parsons , Uma Garg , Deyang Qu , Prasenjit Guptasarma

The polyanionic compound Na2MnSiO4 is regarded as one of the promising cathode materials for Na-ion batteries due to good specific capacity with its attractive prospect of utilization of two electrons in the redox processes. So, in this…

材料科学 · 物理学 2021-10-19 Vishnu Sudarsanan , Anu Maria Augustine , P Ravindran

Searching for efficient and high-performance cathode materials for rechargeable magnesium ion batteries (RMBs) is urgent for exploring sustainable energy technologies. However, the majority of cathode materials for RMBs usually suffer from…

材料科学 · 物理学 2021-01-12 Qin Zhang , Yaobo Hu , Jun Wang , Yuanxiao Dai , Fusheng Pan

Sodium-ion batteries have gained much interest over the past years and especially layered oxides are highly considered as cathodes for the next generation of batteries. However, there are still significant challenges to overcome in these…

材料科学 · 物理学 2025-12-09 Konstantin Köster , Payam Kaghazchi

Development of energy storage technologies that can exhibit higher energy densities, better safety, and lower supply-chain constraints than the current state-of-the-art Li-ion batteries (LIBs) is crucial for our transition into sustainable…

材料科学 · 物理学 2025-10-13 Vijay Choyal , Debsundar Dey , Gopalakrishnan Sai Gautam

Developing high-performance cathode materials for magnesium-ion batteries (MIBs) remains challenging because Mg$^{2+}$ ions move slowly, and conventional materials exhibit low voltage outputs. In this study, machine learning and…

材料科学 · 物理学 2026-05-13 Jhon Rogelnor A. Florida , Edward Aris D. Fajardo

The search for sustainable, high-performance cathodes has driven a growing interest in sodium superionic conductor (NASICON)-type phosphates for sodium-ion batteries (SIBs). To identify promising NASICONs containing earth-abundant…

材料科学 · 物理学 2026-05-26 Santosh Behara , Achinthya Krishna Bheemaguli , Gopalakrishnan Sai Gautam

Cathode materials undergo various phase transitions during the charge/discharge process, and the structural transitions significantly affect the battery performance. Although phonon properties can provide a direct clue for structural…

材料科学 · 物理学 2022-08-08 Haeyoon Jung , Jiyeon Kim , Sooran Kim

Composite materials achieved by including transition-metal oxides with different structures and morphologies in sulfur are suggested as scalable cathodes for high-energy lithium-sulfur (Li-S) batteries. The composites contain 80 wt.% sulfur…

材料科学 · 物理学 2022-06-30 Vittorio Marangon , Eugenio Scaduti , Viviana Fatima Vinci , Jusef Hassoun

High-performance anodes for rechargeable Li-ion battery are produced by nanostructuring of the transition metal oxides on a conductive support. Here, we demonstrate a hybrid material of MnO2 directly grown onto fabrics of carbon nanotube…

We report the electrochemical investigation and study the diffusion kinetics of boron doped Na$_{0.66}$Mn$_{0.8}$Fe$_{0.2}$O$_{2}$ (B-NMFO) cathode materials for sodium-ion batteries. Notably, the B-NMFO cathode exhibits improved specific…

The cathode properties of Na2MTiO4 (M: transition-metal element) are investigated by means of density-functional-theory calculations. The stability between the layered structure and the disordered structure are focused in comparison with…

材料科学 · 物理学 2022-02-23 Kunihiko Yamauchi , Hiroyoshi Momida , Tamio Oguchi

Multivalent batteries are an energy storage technology with the potential to surpass lithium-ion batteries, however their performance has been limited by the low voltages and poor solid-state ionic mobility of available cathodes. A…

材料科学 · 物理学 2022-04-13 Ann Rutt , Jimmy-Xuan Shen , Matthew Horton , Jiyoon Kim , Jerry Lin , Kristin A. Persson

We prepared Na$_x$TO$_2$ (T = Mn, Co) nanostructures to use as cathode material in Na-ion batteries. The Rietveld refinement of x-ray diffraction data confirms the hexagonal symmetry. Scanning and transmission electron microscopy…

材料科学 · 物理学 2018-06-06 Mahesh Chandra , Rishabh Shukla , Muhammad Rashid , Amit Gupta , Suddhasatwa Basu , R. S. Dhaka

Li2FeSiO4 is an important alternative cathode for next generation Li-ion batteries due to its high theoretical capacity (330 mA h/g). However, its development has faced significant challenges arising from structural complexity and poor…

材料科学 · 物理学 2016-11-15 P. Vajeeston , H. Fjellvåg

We report the electrochemical sodium-ion kiinetics and distribution of relaxation time (DRT) analysis of a newly designed mixed polyanionic NaFe$_{1.6}$V$_{0.4}$(PO$_{4}$)(SO$_{4}$)$_{2}$@CNT composite as a cathode. The specific capacity of…

化学物理 · 物理学 2024-04-22 Jayashree Pati , Rajendra S. Dhaka

We report the electrochemical performance and diffusion kinetics of a newly designed NASICON type Na$_{3.3}$Mn$_{1.2}$Ti$_{0.75}$Mo$_{0.05}$(PO$_4$)$_3$/C composite material as a cathode for cost-effective sodium-ion batteries. A novel…

化学物理 · 物理学 2025-10-01 Madhav Sharma , Rajendra S. Dhaka

Na-ion batteries (NIBs), which are recognized as a next-generation alternative technology for energy storage, still suffer from commercialization constraints due to the lack of low-cost, high-performance cathode materials. Since our first…

Layered Li(Ni,Mn,Co,)O$_2$ (NMC) presents an intriguing ternary alloy design space for optimization as a cathode material in Li-ion batteries. Recently, the high cost and resource limitations of Co have added a new design constraint and…

材料科学 · 物理学 2020-02-17 Gregory Houchins , Venkatasubramanian Viswanathan

The identification of alternatives to the Lithium-ion battery architecture remains a crucial priority in the diversification of energy storage technologies. Accompanied by the low reduction potential of $\mathrm{Ca^{2+}/Ca}$, -2.87 V vs.…

材料科学 · 物理学 2021-07-29 Wang Lu , Juefan Wang , Gopalakrishnan Sai Gautam , Pieremanuele Canepa
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