Chemical Communications, Journal Year: 2024, Volume and Issue: 60(71), P. 9590 - 9593
Published: Jan. 1, 2024
Pristine MOF nanosheets with a highly active metal–sulfur (M–S, M = Co and Ni) region as cathodes for Zn–Co/Ni batteries are successfully prepared through dual substitution strategy of metal ions organic ligands.
Language: Английский
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(10), P. 12781 - 12792
Published: Feb. 28, 2024
The traditional methods for creating oxygen vacancies in materials present several challenges and limitations, such as high preparation temperatures, limited vacancy generation, morphological destruction, which hinder the application of transition metal oxides field zinc–air batteries (ZABs). In order to address these we have introduced a pioneering lithium reduction strategy generating δ-MnO2@MXene composite materials. This stands out its simplicity implementation, applicability at room temperature, preservation material's structural integrity. research demonstrates that aqueous Ov-MnO2@MXene-5, with vacancies, exhibits an outstanding reaction (ORR) activity ORR half-wave potential reaching 0.787 V. DFT calculations demonstrated enhanced could be attributed adjustments electronic structure alterations adsorption bond lengths. These result from introduction turn promote electron transport catalytic activity. context batteries, cells Ov-MnO2@MXene-5 air cathode exhibit performance, featuring significantly improved maximum power density (198.3 mW cm–2) long-term cycling stability. Through innovative introducing this study has successfully electrochemical performance MnO2, overcoming limitations associated vacancies. Consequently, opens up new avenues directions nonprecious catalyst ZABs.
Language: Английский
Citations
45
Nature Sustainability, Journal Year: 2024, Volume and Issue: 7(9), P. 1204 - 1214
Published: July 23, 2024
Abstract Nickel-rich layered transition metal oxides are leading cathode candidates for lithium-ion batteries due to their increased capacity, low cost and enhanced environmental sustainability compared cobalt formulations. However, the nickel enrichment comes with larger volume change during cycling as well reduced oxygen stability, which can both incur performance degradation. Here we show an ultrahigh-nickel cathode, LiNi 0.94 Co 0.05 Te 0.01 O 2 , that addresses all of these critical issues by introducing high valent tellurium cations (Te 6+ ). The as-prepared material exhibits initial capacity up 239 milliampere-hours (mAh) per gram impressive retention 94.5% after 200 cycles. resulting Ah-level lithium battery silicon-carbon anode achieves extraordinary monomer energy density 404 watt-hours (Wh) kilogram 91.2% 300 Advanced characterizations theoretical calculations introduction serves engineer particle morphology a microstructure better accommodate lattice strain enable intralayer Te–Ni–Ni–Te ordered superstructure, effectively tunes ligand energy-level structure suppresses loss. This work not only advances nickel-based into realm 400 Wh kg −1 but suggests new opportunities in design materials without trade-off between sustainability.
Language: Английский
Citations
26
Journal of Material Science and Technology, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
2
Electrochemical Energy Reviews, Journal Year: 2025, Volume and Issue: 8(1)
Published: Feb. 27, 2025
Language: Английский
Citations
2
Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(56)
Published: July 6, 2023
Aqueous zinc-ion batteries (ZIBs) are gaining significant attention for their numerous advantages, including high safety, energy density, affordability, and environmental friendliness. However, the development of ZIBs has been hampered by lack suitable cathode materials that can store Zn2+ with capacity reversibility. Currently, vanadium-based tunnel or layered structures widely researched owing to theoretical diversified structures. long-term cycling stability is unsatisfactory because material dissolution, phase transformation, restrictive kinetics in aqueous electrolytes, which limits practical applications. Different from previous reviews on ZIBs, this review specifically addresses critical issues faced cathodes proposes potential solutions. Focusing cathodes, ion storage mechanisms, parameters affecting performance, progress made addressing aforementioned problems also summarized. Finally, future directions ZIB suggested.
Language: Английский
Citations
23
Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 98, P. 112954 - 112954
Published: July 25, 2024
Language: Английский
Citations
12
ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(21), P. 8070 - 8082
Published: May 15, 2024
Aqueous zinc-ion batteries (AZIBs) have significant potential as a large-scale energy storage device due to their low cost and high safety. However, the formation of zinc dendrites during repeated plating stripping complicated side reactions has seriously hindered development AZIBs. Herein, N, P dual-doped biomass carbon was constructed by simple hydrothermal pyrolysis strategy. In this case, N heteroatoms increased defects made it easier form uniform stable interface with metal. On other hand, interfacial interactions between Zn2+ surface were enhanced introduction zincophilic groups, which lowered barriers required for nucleation, resulting in deposition. Therefore, symmetric assembled Zn anodes based on exhibited outstanding cycling stability (2000 h) relatively small voltage hysteresis (45 mV) at current density 1 mA cm–2 an area capacity 0.15 mAh cm–2. Besides, VO2 cathode compose full battery, NPBC@Zn//VO2 battery 132.2 g–1 after 1500 cycles 5 A g–1, 76.8% retention. It is much higher than 27.7% Zn//VO2 battery. This work demonstrates novel two-element-doped carbon/Zn anode modification strategy achieve dendrite-free
Language: Английский
Citations
9
Nano Letters, Journal Year: 2023, Volume and Issue: 23(24), P. 11842 - 11849
Published: Dec. 10, 2023
Aluminum-ion batteries have garnered an extensive amount of attention due to their superior electrochemical performance, low cost, and high safety. To address the limitation battery exploring new cathode materials understanding reaction mechanism for these are great significance. Among numerous candidates, multiple structures valence states make manganese-based oxides best choice aqueous aluminum-ion (AAIBs). In this work, a consists γ-MnO2 with abundant oxygen vacancies. As result, electrode shows discharge capacity 481.9 mAh g–1 at 0.2 A sustained reversible 128.6 after 200 cycles 0.4 g–1. particular, through density functional theory calculation experimental comparison, role vacancies in accelerating kinetics H+ has been verified. This study provides insights into application manganese dioxide AAIBs.
Language: Английский
Citations
22
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 152994 - 152994
Published: June 12, 2024
Language: Английский
Citations
8
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 3, 2024
Abstract Aqueous zinc‐ion batteries (ZIBs) have gained significant attention owing to their high energy densities, low costs, and enhanced safety profiles. However, the development of suitable host materials (i.e., cathodes) with capacity, structural stability, rate performance remains challenging. Herein, a nanoflower‐like Ca 0.10 MnO 2 ·0.61H O (CaMnO) is successfully synthesized as high‐performance cathode material for ZIBs using simplified one‐step hydrothermal method. The unique 3D porous structure provides continuous conductive path abundant adsorption sites Zn 2+ ions mitigates aggregation during long‐term cycling processes. In addition, doping into interlayer has dual functional effect: 1) it acts pillar broaden spacing enhance crystal 2) induces formation oxygen vacancies reaction kinetics increase reversible capacity. Therefore, CaMnO exhibits specific capacity 289 mAh g −1 , excellent retention (90%) over 750 cycles at current 1.5 A . This study new perspective on advanced ZIBs.
Language: Английский
Citations
7