Controlling the Electrochemical Properties of Spinel Intercalation Compounds

Kolli, Sanjeev Krishna; Ven, Anton Van der

doi:10.1021/acsaem.8b01080

Cited by 15 publications

(32 citation statements)

References 38 publications

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“…In addition to the compositions listed above, we also considered materials that are stable against Mg metal 24,26 (potential anode coatings) and analogous chemistries that have been employed in Li-systems (e.g., Li-Nb oxides). [18][19][20][21][22] Although prior studies have demonstrated [27][28][29][30] that the lack of Mg (or multivalent) mobility in several structures relates to a combination of stronger electrostatic interactions of a 2+ charge with its surrounding anion environment (versus 1+ charge of monovalent ions) and strong coordination preferences, 17,25,[31][32][33][34] Mg mobility has not been rigorously quantified yet for potential coating chemistries.…”

Section: Introductionmentioning

confidence: 99%

Ionic Transport in Potential Coating Materials for Mg Batteries

2019

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A major bottleneck for the development of Mg batteries is the identification of liquid electrolytes that are simultaneously compatible with the Mg-metal anode and high-voltage cathodes. One strategy to widen the stability windows of current nonaqueous electrolytes is to introduce protective coating materials at the electrodes, where coating materials are required to exhibit swift Mg transport. In this work, we use a combination of first-principles calculations and ion-transport theory to evaluate the migration barriers for nearly 27 Mg-containing binary, ternary, and quaternary compounds spanning a wide chemical space. Combining mobility, electronic band gaps, and stability requirements, we identify MgSiN 2 , MgI 2 , MgBr 2 , MgSe, and MgS as potential 1 arXiv:1907.03320v1 [cond-mat.mtrl-sci]

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Section: Introductionmentioning

confidence: 99%

Ionic Transport in Potential Coating Materials for Mg Batteries

2019

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“…Kolli et al, investigated the electrochemical properties of spinel intercalation compounds, in their study it is proved that the guest cation played an important role in determining the electrochemical performance. [55] Also, the inverse spinel showed a higher electrochemical performance due to the occupancy of the trivalent cation in the A site and also partially in the B site,…”

Section: Co-based Bimetallic Oxidesmentioning

confidence: 99%

“…A normal spinel compound transforms into an inverse spinel when the equation is Cu x Co 3-x O with x higher than 0.2. [55] In the inverse spinel CuCo 2 O 4, the Co 3 + cations were distributed to both A sites, and one-half of the B sites, the Cu 2 + cations occupy the B sites. CuCo 2 O 4 showed a high theoretical capacitance of 984 F g À 1 , with a bandgap of 0.5-0.6 eV which shows a good conductivity.…”

Section: Co-based Bimetallic Oxidesmentioning

confidence: 99%

“…Interestingly, CuCo 2 O 4 has two crystal structures, normal spinel, and inverse spinel. A normal spinel compound transforms into an inverse spinel when the equation is Cu x Co 3‐x O with x higher than 0.2 [55] . In the inverse spinel CuCo 2 O 4, the Co 3+ cations were distributed to both A sites, and one‐half of the B sites, the Cu 2+ cations occupy the B sites.…”

Section: Bimetallic Oxidesmentioning

confidence: 99%

“…This spinel structure can accommodate guest cations in the 16c octahedrally coordinated sites, this along with the tetrahedral 8a sites will form a 3‐dimensional interconnected network. Kolli et al ., investigated the electrochemical properties of spinel intercalation compounds, in their study it is proved that the guest cation played an important role in determining the electrochemical performance [55] . Also, the inverse spinel showed a higher electrochemical performance due to the occupancy of the trivalent cation in the A site and also partially in the B site, (Co 1‐x Fe x ) Tet [Co x Fe 2‐x ] Oct O 4 .…”

Section: Bimetallic Oxidesmentioning

confidence: 99%

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Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

2021

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There is a growing interest in supercapacitors as energy storage systems due to their high specific power, fast charge/discharge rates, and long cycling stability. Researchers have focused recently on developing nanomaterials to enhance the capacitive performance of supercapacitors. The inclusion of electroactive components, such as transition metal oxides (TMOs), carbonbased materials, and conducting polymers (CPs), is believed to play an important role in improving the electrochemical behavior of the electrode materials. Nevertheless, supercapacitors containing TMOs, carbon-based materials, and CPs commonly suffer from inferior ion-transport kinetics and poor electronic conductivity, which can affect the rate capability and cycling stability of the electrodes. Therefore, the development of TMO/CP and TMO/carbon-based electrode materials has gained widespread attention because they synergistically combine the advantages of both materials, enabling revolutionary applications in the electrochemical field. In general, TMOs have given good performance as electrodes for supercapacitors by further increasing the performance of the electrode when two metal cations are introduced into a single crystal structure. This Review describes and highlights recent progress in the development of bimetallic oxides regarding their design approach, configurations, and electrochemical properties for supercapacitor applications, at the same time providing new opportunities for future energy storage technologies.

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Alloy Anode Materials for Rechargeable Mg Ion Batteries

Niu

Zhang

Aurbach

2020

Advanced Energy Materials

171

113

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Rechargeable magnesium ion batteries are interesting as one of the alternative metal ion battery systems to lithium ion batteries due to the wide availability and accessibility of magnesium in the earth's crust. On the one hand, electrolyte solutions in which Mg metal anodes are fully reversible are not suitable for the use of high voltage/high capacity transition metal oxide cathodes due to complex surface phenomena. On the other hand, Mg metal anodes cannot work reversibly in conventional electrolyte solutions in which high voltage/high capacity Mg insertion cathodes can work because of passivation phenomena that fully block them. Replacing Mg metal with alternative anodes that can work reversibly in conventional electrolyte solutions could provide a promising route to elaborate high voltage and high capacity rechargeable Mg battery systems. Herein, the recent progress in alloy anodes based on group IIIA, IVA, VA elements is summarized. The theoretical evaluations, achievable capacities, synthetic strategies, battery test configurations, electrochemical properties, and underlying reaction mechanisms are systematically summarized and discussed. The key issues and challenges impeding their current use are identified and some valuable suggestions for their future development as practical reversible anodes for Mg batteries are provided.

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Controlling the Electrochemical Properties of Spinel Intercalation Compounds

Cited by 15 publications

References 38 publications

Ionic Transport in Potential Coating Materials for Mg Batteries

Ionic Transport in Potential Coating Materials for Mg Batteries

Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

Alloy Anode Materials for Rechargeable Mg Ion Batteries

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