Electrochemical Zinc Ion Capacitors: Fundamentals, Materials, and Systems

Advanced Energy Materials, Год журнала: 2021, Номер 11(21)

Опубликована: Апрель 22, 2021

Abstract An electrochemical zinc ion capacitor (ZIC) is a hybrid supercapacitor composed of porous carbon cathode and anode. Based on the low‐cost features metal, ZIC potential candidate for safe, high‐power, energy storage applications. ZICs have gained tremendous attention in recent years. However, low densities limited cycling stability are still major challenges developing high‐performance ZICs. First, density by capacitance cathodes. Second, aqueous electrolytes induce parasitic reactions, which results voltage windows poor performances Third, stabilities utilization anodes remain to develop practical This review summarizes progress highlights both promising challenging attributes this emerging technology. Future research directions proposed better, lower cost, more scalable

Язык: Английский

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Architecting Amorphous Vanadium Oxide/MXene Nanohybrid via Tunable Anodic Oxidation for High‐Performance Sodium‐Ion Batteries

Advanced Energy Materials, Год журнала: 2021, Номер 11(22)

Опубликована: Апрель 24, 2021

Abstract Structural engineering and creating atomic disorder in electrodes are promising strategies for highly efficient rapid charge storage advanced batteries. Herein, a nanohybrid architecture is presented with amorphous vanadium oxide conformally coated on layered V 2 C MXene ( ‐VO x /V C) via tunable anodic oxidation, which exhibits high reversible capacity of 307 mAh g –1 at 50 mA , decent rate capability up to 96 2000 good cycling stability as cathode sodium‐ion The a‐ VO layer enables fast Na + insertion/extraction by providing sufficient vacancies open pathways the framework, unlike irreversible phase transition its crystalline counterpart, while offers abundant electron/ion transfer channels, joined together boost electrochemical performance. Notably improved reversibility structural superiority clearly revealed situ Raman, transmission electron microscopy, synchrotron X‐ray absorption spectroscopy, density functional theory calculations, demonstrating V–O vibration valence oscillation between 4+ 5+ disordered robust unobstructed diffusion. This work provides meaningful reference elaborate design MXene‐based nanostructured toward rechargeable

Язык: Английский

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Mechanistic Insights of Mg²⁺‐Electrolyte Additive for High‐Energy and Long‐Life Zinc‐Ion Hybrid Capacitors

Advanced Energy Materials, Год журнала: 2021, Номер 11(30)

Опубликована: Июнь 19, 2021

Abstract An electrolyte cation additive strategy provides a versatile route for developing high‐energy and long‐life aqueous zinc‐ion hybrid capacitors. However, the mechanisms of energy storage Zn anode protection are still unclear in Zn‐based systems with dual‐ion electrolytes. Here, dual charge mechanism capacitors both cations anions adsorption/desorption reversible formation 4 SO (OH) 6 · x H 2 O enabled by Mg 2+ common ZnSO proposed. Theoretical calculations verify that self‐healing electrostatic shield effect solvation‐sheath structure regulation rendered account observed uniform deposition dendrite suppression. As result, an additional capacity ≈50% compared to pure m extended cycle life retention 98.7% after 10 000 cycles achieved. This work highlights effectiveness design carrier devices toward high density long life.

Язык: Английский

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Dual-doped carbon hollow nanospheres achieve boosted pseudocapacitive energy storage for aqueous zinc ion hybrid capacitors

Energy storage materials, Год журнала: 2021, Номер 42, С. 705 - 714

Опубликована: Авг. 15, 2021

Язык: Английский

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Recent trends in supercapacitor-battery hybrid energy storage devices based on carbon materials

Journal of Energy Storage, Год журнала: 2022, Номер 52, С. 104938 - 104938

Опубликована: Май 30, 2022

Язык: Английский

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

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Март 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

Язык: Английский

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1D/3D Heterogeneous Assembling Body as Trifunctional Electrocatalysts Enabling Zinc–Air Battery and Self‐Powered Overall Water Splitting

Advanced Functional Materials, Год журнала: 2021, Номер 32(4)

Опубликована: Окт. 10, 2021

Abstract Developing low‐cost, efficient, and stable trifunctional electrocatalyst for oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER) is still a significant challenge. Herein, this study reports zeolitic imidazolate framework (ZIF) derived electrocatalyst, composed of Co 5.47 N 7 Fe 3 (CoFeN) that embedded into 1D N‐doped carbon nanotubes modified 3D cruciform matrix (NCNTs//CCM). Benefiting from the robust interfacial conjugation N/Co 1D/3D hierarchical structure with large surface area, as‐prepared CoFeN‐NCNTs//CCM display electrocatalytic activity ORR (half‐wave potential 0.84 V), OER (320 mV at 10 mA cm –2 ), HER (−151 ). The assembled Zn‐air battery exhibits high power density (145 mW ) , enhanced charge–discharge performance (voltage gap 0.76 V long‐term cycling stability (over 445 h). resultant overall water‐splitting cell achieves current 1.63 V, which can compete best reported catalysts. What more, self‐assembled batteries are utilized to water splitting successfully, verifying great as functional material sustainable energy storage conversion system.

Язык: Английский

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CO₂‐Etching Creates Abundant Closed Pores in Hard Carbon for High‐Plateau‐Capacity Sodium Storage

Advanced Energy Materials, Год журнала: 2023, Номер 14(3)

Опубликована: Ноя. 29, 2023

Abstract Hard carbon (HC) has become the most promising anode material for sodium‐ion batteries (SIBs), but its plateau capacity at ≈0.1 V (Na + /Na) is still much lower than that of graphite (372 mAh g −1 ) in lithium‐ion (LIBs). Herein, a CO 2 ‐etching strategy applied to generate abundant closed pores starch‐derived hard effectively enhances Na storage. During etching, open are first formed on matrix, which situ reorganized through high‐temperature carbonization. This ‐assisted pore‐regulation increases diameter and HC, simultaneously maintains microsphere morphology (10–30 µm diameter). The optimal HC exhibits Na‐storage 487.6 with high initial Coulomb efficiency 90.56%. A record‐high 351 achieved, owing micropores generated by ‐etching. Comprehensive ex tests unravel storage performance originates from pore‐filling mechanism micropores.

Язык: Английский

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Urea‐Mediated Monoliths Made of Nitrogen‐Enriched Mesoporous Carbon Nanosheets for High‐Performance Aqueous Zinc Ion Hybrid Capacitors

Small, Год журнала: 2022, Номер 18(16)

Опубликована: Март 13, 2022

Aqueous zinc ion hybrid capacitors (aZHCs) are of great potential for large-scale energy storage and flexible wearable devices, which the specific capacity density need to be further enhanced practical applications. Herein, a urea-mediated foaming strategy is reported efficient synthesis monoliths consisting nitrogen-enriched mesoporous carbon nanosheets (NPCNs) by prefoaming drying solution made polyvinylpyrrolidone, nitrate, urea at low temperatures, annealing high subsequent acid etching. NPCNs have large lateral size ≈40 µm, thin thickness ≈55 nm, abundant micropores mesopores (≈3.8 nm), N-doping value 9.7 at.%. The as cathode in aZHCs provide sites involving both physical chemical adsorption/desorption Zn2+ ions, deliver capacities 262 115 mAh g-1 0.2 10 A , remarkable areal ≈0.5 cm-2 with mass loading 5.3 mg outperforming most cathodes thus far. Moreover, safe based quasi-solid-state devices fabricated, can withstand drilling mechanical bending, suggesting their applications devices.

Язык: Английский

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Recent Progress of Hollow Carbon Nanocages: General Design Fundamentals and Diversified Electrochemical Applications

Advanced Science, Год журнала: 2023, Номер 10(7)

Опубликована: Янв. 1, 2023

Abstract Hollow carbon nanocages (HCNCs) consisting of sp 2 shells featured by a hollow interior cavity with defective microchannels (or customized mesopores) across the shells, high specific surface area, and tunable electronic structure, are quilt different from other nanocarbons such as nanotubes graphene. These structural morphological characteristics make HCNCs new platform for advanced electrochemical energy storage conversion. This review focuses on controllable preparation, regulation, modification HCNCs, well their functions applications materials electrocatalytic conversion materials. The metal single atoms‐functionalized structures properties summarized systematically deeply. research challenges trends also envisaged deepening extending study application this material. development multifunctional carbon‐based composite provides idea method improving density, power volume performance devices.

Язык: Английский

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