MoS2/MoO2 nanosheets anchored on carbon cloth for high-performance magnesium- and sodium-ion storage

Wu, Hui; Xiong, Zhennan; Mao, Yiyang; Zhang, Huihui; Junshen, Yingying Hu; Wang, Baofeng; Xia, Guanglin

doi:10.1016/j.jmst.2022.09.039

Cited by 14 publications

(5 citation statements)

References 47 publications

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“…The V 2p spectrum (Figure 5b) in the prepared sample in the initial condition demonstrates the contribution of V 5+ , V 4+ , and V 3+ at 517.7, 517.0, and 515.9 eV, respectively. 24,25 Figure 5b reveals the weakened peak of V 5+ and the enhanced peak of V 4+ after discharging. It means that V 5+ is partially reduced to V 4+ in the process of magnesium intercalation reaction.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Robust Hewettite HKV₆O₁₆·4H₂O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg²⁺ Storage

Chen

et al. 2023

Energy Fuels

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With the continued rising demands for new advanced rechargeable batteries, the environment-friendly, low-cost, magnesium-ion batteries (MIBs) with high volumetric capacity emerge as the times require. However, some bottlenecks in the research of cathodes limit the entrance of MIBs into large-scale applications due to the sluggish kinetics and irreversible insertion of Mg 2+ . Herein, the novel layered hewettite HKV 6 O 16 •4H 2 O/CNT (HKVO/CNT) nanosheets as robust cathode materials are designed for sustainable magnesium-ion storage. Compared with the bare HKVO, HKVO/CNT exhibits an appreciable specific capacity of 280 mA h g −1 at 20 mA g −1 and an outstanding capacity retention of about 90% after 4500 cycles. Furthermore, the systematic electrochemistry and structural testing determine that HKVO/CNT could be a promising high-performance cathode material for MIBs.

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Robust Hewettite HKV₆O₁₆·4H₂O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg²⁺ Storage

Chen

et al. 2023

Energy Fuels

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“…Notwithstanding, RMBs still face two obstacles: one challenge is the appropriate cathode materials to enable the rapid diffusion of Mg 2+ − and the other challenge is the creation of electrolytes that are compatible with Mg anode/cathode materials. − The study of an Mg electrolyte that could not passivate a magnesium anode has become a state-of-the-art subject. As a consequence of its nucleophilic nature, Lewis acid–base is incompatible with electrophilic sulfur electrodes .…”

Section: Introductionmentioning

confidence: 99%

Efficient and Stable Magnesium Plating/Stripping in High-Capacity Novel Mg//Ni_0.6Co_0.4Se₂ Batteries Enabled by Interfacial Chemistry Modulation

Cui,

Chen,

Liu

et al. 2024

ACS Sustainable Chem. Eng.

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Rechargeable magnesium batteries (RMBs) are considered as a potential rechargeable for replacing or assisting lithium metal batteries (LMBs). The Mg anode is prone to experiencing a native oxide layer in most electrolytes, resulting in an inferior overpotential and irreversible Mg plating/stripping behavior. Herein, we report for the first time that a novel Mg battery can be assembled using a non-nucleophilic Mg(HMDS) 2based electrolyte with I 2 in a relatively large solvent molecule diglyme. An artificial interface phase of MgI 2 was constructed in Mg(HMDS) 2 -AlCl 3 electrolyte through the reaction of oxidant I 2 and reductant Mg foil. This artificial interface phase is less sensitive to the electrolyte composition. The electrolyte decomposition and the Mg side reaction are effectively inhibited by the MgI 2 interphase. In-situ MgI 2 interphase significantly lessens the interface impedance and overpotential of the electrochemical Mg deposition/dissolution process. More importantly, the overpotential of the cell using Mg(HMDS) 2 -2AlCl 3 -I 2 /G2 electrolyte is decreased to 0.10 V vs Mg 2+ /Mg with high Coulombic efficiency of ∼99%, which is superior to the recently reported Mg(HMDS) 2based electrolytes. Besides, the first-principles calculations demonstrate that Mg is uniformly deposited on the MgI 2 surface due to reversible Mg plating/stripping, low overpotential, and long-term cycle performance. Note that the as-fabricated novel Ni 0.6 Co 0.4 Se 2 | Mg(HMDS) 2 -AlCl 3 -I 2 /G2|Mg full battery delivers an initial specific capacity of 186 mAh g −1 , and retains 120 mAh g −1 with Coulombic efficiency of 100% after 100 cycles. The novel Mg battery verifies the availability of the Mg(HMDS) 2 -AlCl 3 -I 2 /G2 electrolyte through electrolyte additive engineering. The high capacity and stable as-assembled Mg//Ni 0.6 Co 0.4 Se 2 full cell confirms the compatibility of Mg(HMDS) 2 and I 2 as well as the utility of modified electrolyte and diselenides cathode materials in RMBs.

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“…5 Therefore, developing suitable electrode materials for SIBs and PIBs with large reversible capacities, superior cycling stability, and high-rate performance is highly desirable. 6,7 Much effort has been devoted to finding suitable anode materials to improve the electrochemical performance of SIBs and PIBs. [8][9][10] Among potential anode materials, tin oxide (SnO 2 ) stands out due to its high theoretical capacity (782 mAh g -1 ), abundance, low cost, and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

“…However, the larger radius of Na/K ions (1.02/1.38 Å) compared to Li + (0.76 Å) makes it more challenging for them to insert into anode materials, leading to a lower reversible capacity 5 . Therefore, developing suitable electrode materials for SIBs and PIBs with large reversible capacities, superior cycling stability, and high‐rate performance is highly desirable 6,7 …”

Section: Introductionmentioning

confidence: 99%

Small but mighty: Empowering sodium/potassium‐ion battery performance with S‐doped SnO₂ quantum dots embedded in N, S codoped carbon fiber network

He,

Wu,

et al. 2024

Carbon Energy

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SnO2 has been extensively investigated as an anode material for sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs) due to its high Na/K storage capacity, high abundance, and low toxicity. However, the sluggish reaction kinetics, low electronic conductivity, and large volume changes during charge and discharge hinder the practical applications of SnO2‐based electrodes for SIBs and PIBs. Engineering rational structures with fast charge/ion transfer and robust stability is important to overcoming these challenges. Herein, S‐doped SnO2 (S–SnO2) quantum dots (QDs) (≈3 nm) encapsulated in an N, S codoped carbon fiber networks (S–SnO2–CFN) are rationally fabricated using a sequential freeze‐drying, calcination, and S‐doping strategy. Experimental analysis and density functional theory calculations reveal that the integration of S–SnO2 QDs with N, S codoped carbon fiber network remarkably decreases the adsorption energies of Na/K atoms in the interlayer of SnO2–CFN, and the S doping can increase the conductivity of SnO2, thereby enhancing the ion transfer kinetics. The synergistic interaction between S–SnO2 QDs and N, S codoped carbon fiber network results in a composite with fast Na+/K+ storage and extraordinary long‐term cyclability. Specifically, the S–SnO2–CFN delivers high rate capacities of 141.0 mAh g−1 at 20 A g−1 in SIBs and 102.8 mAh g−1 at 10 A g−1 in PIBs. Impressively, it delivers ultra‐stable sodium storage up to 10,000 cycles at 5 A g−1 and potassium storage up to 5000 cycles at 2 A g−1. This study provides insights into constructing metal oxide‐based carbon fiber network structures for high‐performance electrochemical energy storage and conversion devices.

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MoS2/MoO2 nanosheets anchored on carbon cloth for high-performance magnesium- and sodium-ion storage

Cited by 14 publications

References 47 publications

Robust Hewettite HKV₆O₁₆·4H₂O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg²⁺ Storage

Robust Hewettite HKV₆O₁₆·4H₂O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg²⁺ Storage

Efficient and Stable Magnesium Plating/Stripping in High-Capacity Novel Mg//Ni_0.6Co_0.4Se₂ Batteries Enabled by Interfacial Chemistry Modulation

Small but mighty: Empowering sodium/potassium‐ion battery performance with S‐doped SnO₂ quantum dots embedded in N, S codoped carbon fiber network

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MoS2/MoO2 nanosheets anchored on carbon cloth for high-performance magnesium- and sodium-ion storage

Cited by 14 publications

References 47 publications

Robust Hewettite HKV6O16·4H2O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg2+ Storage

Robust Hewettite HKV6O16·4H2O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg2+ Storage

Efficient and Stable Magnesium Plating/Stripping in High-Capacity Novel Mg//Ni0.6Co0.4Se2 Batteries Enabled by Interfacial Chemistry Modulation

Small but mighty: Empowering sodium/potassium‐ion battery performance with S‐doped SnO2 quantum dots embedded in N, S codoped carbon fiber network

Contact Info

Product

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Robust Hewettite HKV₆O₁₆·4H₂O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg²⁺ Storage

Robust Hewettite HKV₆O₁₆·4H₂O/CNT Nanosheets as High-Performance Cathodes for Sustainable Mg²⁺ Storage

Efficient and Stable Magnesium Plating/Stripping in High-Capacity Novel Mg//Ni_0.6Co_0.4Se₂ Batteries Enabled by Interfacial Chemistry Modulation

Small but mighty: Empowering sodium/potassium‐ion battery performance with S‐doped SnO₂ quantum dots embedded in N, S codoped carbon fiber network