Highly Reversible Zn Metal Anodes Enabled by Freestanding, Lightweight, and Zincophilic MXene/Nanoporous Oxide Heterostructure Engineered Separator for Flexible Zn-MnO₂ Batteries

ACS Nano, Journal Year: 2022, Volume and Issue: 16(4), P. 6755 - 6770

Published: March 31, 2022

Aqueous zinc (Zn)-ion batteries are regarded as promising candidates for large-scale energy storage systems because of their high safety, low cost, and environmental benignity. However, the dendrite issue Zn anode hinders practical application. Herein, a freestanding, lightweight, zincophilic MXene/nanoporous oxide heterostructure engineered separator is designed to stabilize metal anode. The nanoporous oxides prepared by one-step vacuum distillation technique afford advantages large surface area, porosity, homogeneous porous structure. MXene@oxides layer can homogenize electric field distribution, facilitate ion diffusion kinetics, reduce local current density, promote even ionic flux, which will regulate uniform deposition suppress side reactions. Accordingly, dendrite-free anodes with stable cyclability achieved over 500 h at an ultrahigh area capacity 10 mAh cm-2. Besides, flexible, long-lifespan, high-rate N/S-doped three-dimensional MXene@MnO2||Zn full cells constructed separator. Moreover, this strategy be successfully extended lithium, sodium, potassium, magnesium batteries, indicating that regulation universal approach overcome challenges batteries.

Language: Английский

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Hierarchical Confinement Effect with Zincophilic and Spatial Traps Stabilized Zn-Based Aqueous Battery

Nano Letters, Journal Year: 2022, Volume and Issue: 22(10), P. 4223 - 4231

Published: May 4, 2022

Zn-based aqueous batteries (ZABs) have been regarded as promising candidates for safe and large-scale energy storage in the "post-Li" era. However, kinetics stability problems of Zn capture cannot be concomitantly regulated, especially at high rates loadings. Herein, a hierarchical confinement strategy is proposed to design zincophilic spatial traps through host porous Co-embedded carbon cages (denoted CoCC). The Co sites act preferred nucleation with low barriers (within 0.5 mA h cm-2), cage can further spatially confine deposition 5.0 cm-2). Theoretical simulations situ/ex situ structural observations reveal by elaborated all-in-one network 12 Consequently, elaborate enables dendrite-free behavior excellent (low overpotential ca. 65 mV rate 20 cm-2) stable cycle life (over 800 cycles), pushing forward next-generation high-performance ZABs.

Language: Английский

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Status and Opportunities of Zinc Ion Hybrid Capacitors: Focus on Carbon Materials, Current Collectors, and Separators

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: March 29, 2023

Abstract Zinc ion hybrid capacitors (ZIHCs), which integrate the features of high power supercapacitors and energy zinc batteries, are promising competitors in future electrochemical storage applications. Carbon-based materials deemed competitive candidates for cathodes ZIHC due to their cost-effectiveness, electronic conductivity, chemical inertness, controllable surface states, tunable pore architectures. In recent years, great research efforts have been devoted further improving density cycling stability ZIHCs. Reasonable modification optimization carbon-based offer a remedy these challenges. this review, structural design, properties cathode with different dimensions, as well selection compatible, robust current collectors separators ZIHCs discussed. The challenges prospects showcased guide innovative development novel

Language: Английский

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Challenges and perspectives of hydrogen evolution-free aqueous Zn-Ion batteries

Energy storage materials, Journal Year: 2023, Volume and Issue: 59, P. 102767 - 102767

Published: April 6, 2023

Language: Английский

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Planar and dendrite-free zinc deposition enabled by exposed crystal plane optimization of zinc anode

Energy storage materials, Journal Year: 2022, Volume and Issue: 53, P. 273 - 304

Published: Sept. 7, 2022

Language: Английский

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Nanocellulose‐Carboxymethylcellulose Electrolyte for Stable, High‐Rate Zinc‐Ion Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(27)

Published: April 2, 2023

Abstract Aqueous Zn ion batteries (ZIBs) are one of the most promising battery chemistries for grid‐scale renewable energy storage. However, their application is limited by issues such as dendrite formation and undesirable side reactions that can occur in presence excess free water molecules ions. In this study, a nanocellulose‐carboxymethylcellulose (CMC) hydrogel electrolyte demonstrated features stable cycling performance high 2+ conductivity (26 mS cm −1 ), which attributed to material's strong mechanical strength (≈70 MPa) water‐bonding ability. With electrolyte, Zn‐metal anode shows exceptional stability at an ultra‐high rate, with ability sustain current density 80 mA −2 more than 3500 cycles cumulative capacity 17.6 Ah (40 ). Additionally, reactions, hydrogen evolution surface passivation, substantially reduced due CMC. Full Zn||MnO 2 fabricated demonstrate excellent high‐rate long‐term (>500 8C). These results suggest cellulose‐CMC low‐cost, easy‐to‐fabricate, sustainable aqueous‐based ZIBs electrochemical help pave way toward storage sources.

Language: Английский

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Stabilization of Zn anode via a multifunctional cysteine additive

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 447, P. 137471 - 137471

Published: June 11, 2022

Language: Английский

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Modulation of hydrogel electrolyte enabling stable zinc metal anode

Energy storage materials, Journal Year: 2022, Volume and Issue: 51, P. 588 - 598

Published: June 24, 2022

Language: Английский

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Ultrathin and super-tough membrane for anti-dendrite separator in aqueous zinc-ion batteries

Cell Reports Physical Science, Journal Year: 2022, Volume and Issue: 3(4), P. 100824 - 100824

Published: March 25, 2022

Rechargeable aqueous zinc-ion batteries have emerged as potential alternatives to lithium-ion in grid energy storage due their intrinsic safety, economy, and high capacity of zinc anode. Unfortunately, dendrite growth, limited reversibility, corrosion metal anodes systems seriously hamper the application batteries. Herein, ultrathin high-toughness membranes composed eco-friendly biomass nanofibers are constructed for substituting glass-fiber separators rechargeable The presence this robust membrane lowers separator thickness 9 μm, which can prevent pierce dendrite, manipulate crystallographic orientation during deposition, improve anti-corrosion property zinc. Thus, enables excellent electrochemical performance sheds light on a multifunctional design improving anode from beyond itself.

Language: Английский

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Optimization strategies toward advanced aqueous zinc-ion batteries: From facing key issues to viable solutions

Nano Energy, Journal Year: 2023, Volume and Issue: 116, P. 108858 - 108858

Published: Sept. 2, 2023

Language: Английский

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