Switchable and Strain‐Releasable Mg‐Ion Diffusion Nanohighway Enables High‐Capacity and Long‐Life Pyrovanadate Cathode

Ma, Xiu-Fen; Li, Hong‐Yi; Zhu, Xiqin; Ren, Weiwei; Zhang, Xie; Diao, Jiang; Xie, Bing; Huang, Guangsheng; Wang, Jingfeng; Pan, Fusheng

doi:10.1002/smll.202202250

Cited by 9 publications

(7 citation statements)

References 44 publications

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“…The redox peaks exhibited a constant shape as the response currents expanding. The voltammetric response of the MVOH/rGO cathode follows the equation i = av b , where “ i ” represents the peak current, and a and b are adjustable constants [ 51 , 52 ]. Further, b = 1 indicates a capacitive-controlled process, while b = 0.5 indicates a diffusion-controlled process.…”

Section: Resultsmentioning

confidence: 99%

Dual-Defect Engineering Strategy Enables High-Durability Rechargeable Magnesium-Metal Batteries

Chen,

Zhao,

Huang

et al. 2024

Nano-Micro Lett.

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Rechargeable magnesium-metal batteries (RMMBs) are promising next-generation secondary batteries; however, their development is inhibited by the low capacity and short cycle lifespan of cathodes. Although various strategies have been devised to enhance the Mg2+ migration kinetics and structural stability of cathodes, they fail to improve electronic conductivity, rendering the cathodes incompatible with magnesium-metal anodes. Herein, we propose a dual-defect engineering strategy, namely, the incorporation of Mg2+ pre-intercalation defect (P-Mgd) and oxygen defect (Od), to simultaneously improve the Mg2+ migration kinetics, structural stability, and electronic conductivity of the cathodes of RMMBs. Using lamellar V2O5·nH2O as a demo cathode material, we prepare a cathode comprising Mg0.07V2O5·1.4H2O nanobelts composited with reduced graphene oxide (MVOH/rGO) with P-Mgd and Od. The Od enlarges interlayer spacing, accelerates Mg2+ migration kinetics, and prevents structural collapse, while the P-Mgd stabilizes the lamellar structure and increases electronic conductivity. Consequently, the MVOH/rGO cathode exhibits a high capacity of 197 mAh g−1, and the developed Mg foil//MVOH/rGO full cell demonstrates an incredible lifespan of 850 cycles at 0.1 A g−1, capable of powering a light-emitting diode. The proposed dual-defect engineering strategy provides new insights into developing high-durability, high-capacity cathodes, advancing the practical application of RMMBs, and other new secondary batteries.

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Section: Resultsmentioning

confidence: 99%

Dual-Defect Engineering Strategy Enables High-Durability Rechargeable Magnesium-Metal Batteries

Chen,

Zhao,

Huang

et al. 2024

Nano-Micro Lett.

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“…By further stabilizing the CVOH structure through interviewing, an extremely extended cycle life was achieved. This mechanism presented an innovative approach to the creation of high-performance electrodes for multivalent-ion batteries . Doping was also done in the case of oxides of vanadium to get enhanced properties.…”

Section: Cathode Materials For Mg-ion Batteriesmentioning

confidence: 99%

“…This mechanism presented an innovative approach to the creation of high-performance electrodes for multivalent-ion batteries. 81 Doping was also done in the case of oxides of vanadium to get enhanced properties. Therefore, sulfur-doped vanadium pentoxide (S–V 2 O 5 ) has a specific capacity of 300 mAh g –1 and could be utilized as a cathode material for MIBs.…”

Section: Cathode Materials For Mg-ion Batteriesmentioning

confidence: 99%

Nanostructured Design Cathode Materials for Magnesium-Ion Batteries

Javed,

Shah,

Nisar

et al. 2024

ACS Omega

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Energy is undeniably one of the most fundamental requirements of the current generation. Solar and wind energy are sustainable and renewable energy sources; however, their unpredictability points to the development of energy storage systems (ESSs). There has been a substantial increase in the use of batteries, particularly lithium-ion batteries (LIBs), as ESSs. However, low rate capability and degradation due to electric load in long-range electric vehicles are pushing LIBs to their limits. As alternative ESSs, magnesium-ion batteries (MIBs) possess promising properties and advantages. Cathode materials play a crucial role in MIBs. In this regard, a variety of cathode materials, including Mn-based, Se-based, vanadium-and vanadium oxide-based, S-based, and Mg 2+ -containing cathodes, have been investigated by experimental and theoretical techniques. Results reveal that the discharge capacity, capacity retention, and cycle life of cathode materials need improvement. Nevertheless, maintaining the long-term stability of the electrode−electrolyte interface during high-voltage operation continues to be a hurdle in the execution of MIBs, despite the continuous research in this field. The current Review mainly focuses on the most recent nanostructured-design cathode materials in an attempt to draw attention to MIBs and promote the investigation of suitable cathode materials for this promising energy storage device.

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“…Since the electrochemical performance of low-valent V-based oxides in aqueous solution is limited, researchers tend to oxidize ZnV 2 O 4 electrochemically in the first few cycles, which leads to superior electrochemical performance [48] . Other transition metal vanadates include FeVO 4 [49] , Cu 3 V 2 O 7 (OH) 2 •H 2 O [50] , CuV 2 O 6 [51] , ZnV 6 O 16 •8H 2 O [52] , Fe 2 V 4 O 13 [53] , etc., which are also reported efficient for multivalent-ion storage.…”

Section: Transition Metal Vanadatesmentioning

confidence: 99%

Advanced V-based materials for multivalent-ion storage applications

Guo,

Fu,

Song

et al. 2024

Energy Mater

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Multivalent-ion batteries, as promising alternative or supplementary technologies to lithium-ion batteries, have increasingly attracted attention recently. Various advanced materials have been presented to pursue potential breakthroughs in energy and power. Among them, vanadium (V)-based materials benefiting from abundant resources, various polymorphs and valences, especially most with large interlayer spacings, are good candidates for multivalent-ion storage. However, limited by multiple inherent issues, e.g., strong electrostatic interactions, poor electronic conductivity, structure collapse or materials dissolution under battery operation, etc. , various strategies have sprung many advanced materials and applications and also brought about new challenges that are in urgent need to clarify and summarize. Hence, advanced V-based compounds developed for multivalent-ion storage in the past few years are selectively summarized and systematically analyzed, including vanadium oxides and sulfides, vanadates, and V-based MXenes and phosphates. Not only crystal structures and electrochemical properties but also mainstream ion storage mechanisms are critically reviewed. Through analyzing the challenges accompanying multivalent-ion storage, potential opportunities are anticipated.

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Switchable and Strain‐Releasable Mg‐Ion Diffusion Nanohighway Enables High‐Capacity and Long‐Life Pyrovanadate Cathode

Cited by 9 publications

References 44 publications

Dual-Defect Engineering Strategy Enables High-Durability Rechargeable Magnesium-Metal Batteries

Dual-Defect Engineering Strategy Enables High-Durability Rechargeable Magnesium-Metal Batteries

Nanostructured Design Cathode Materials for Magnesium-Ion Batteries

Advanced V-based materials for multivalent-ion storage applications

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