Strategies for pH regulation in aqueous zinc ion batteries

Energy storage materials, Год журнала: 2024, Номер 67, С. 103248 - 103248

Опубликована: Фев. 5, 2024

Aqueous zinc ions batteries (AZIBs) using non-organic electrolytes have garnered sustained interest as a future energy storage technology, primarily due to their low cost, environmental friendliness, and intrinsic safety. However, ion suffer from series of serious challenges, including hydrogen evolution reaction (HER) at the anode, surface passivation, dendrite formation, well limited operating voltage comparatively density. These factors are all influenced by concentration H+ in electrolyte (i.e., pH), its fluctuations during cycle process. To date, there remains lack systematic evaluation correlation between pH value challenges faced AZIBs, or focused review how influences electrochemical performance AZIBs strategies that can be used improve cell efficiency. In this we emphasize strong detail research progress made recent years relating additives, separator modification, interfacial protective layers, battery system design, with particular focus on regulatory mechanisms associated control. On basis, propose important focuses suggestions for onward development AZIBs.

Язык: Английский

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Unlocking Double Redox Reaction of Metal–Organic Framework for Aqueous Zinc‐Ion Battery

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(17)

Опубликована: Март 6, 2024

Abstract Metal–organic frameworks (MOFs) show wide application as the cathode of aqueous zinc‐ion batteries (AZIBs) in future owning to their high porosity, diverse structures, abundant species, and controllable morphology. However, low energy density poor cycling stability hinder feasibility practical application. Herein, an innovative strategy organic/inorganic double electroactive sites is proposed demonstrated obtain extra capacity enhance a manganese‐based metal–organic framework (Mn‐MOF‐74). Simultaneously, its storage mechanism systematically investigated. Moreover, profiting from coordination effect, Mn‐MOF‐74 features with stable structure ZnSO 4 electrolyte. Therefore, Zn/Mn‐MOF‐74 exhibit superior stability. This work aids development MOFs AZIBs.

Язык: Английский

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Engineering an Artificial Coating Layer of Metal Porphyrin‐Based Porous Organic Polymers Toward High Stable Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, Год журнала: 2024, Номер 34(33)

Опубликована: Март 26, 2024

Abstract Aqueous zinc‐ion batteries (AZIBs) possess high theoretical capacity and good safety, making them highly hopeful for large‐scale energy storage applications. Nevertheless, the uncontrolled growth of Zn dendrites on anode significantly reduces cycle life AZIBs. In this study, a series porphyrin‐based porous organic polymers (CuTAPP‐NTCDA‐POP ZnTAPP‐NTCDA‐POP) are synthesized using aminophenylporphyrin (TAPP) aromatic dianhydride, which served as protective coating layers anode. The effectively prevents formation guides deposition 2+ because abundance zincophilic sites. As expected, symmetric cells equipped with optimum ZnTAPP‐NTCDA‐POP@Zn demonstrate longer over 1200 h at 0.5 mA cm −2 compared to bare (64 h). Moreover, when ammonium vanadate (NHVO) cathode is coupled anode, resulting full cell displays superior stability that sustains 350 cycles higher invertible (225 mAh g −1 1 A ). This performance surpasses just work proposes viable strategy address dendrites, presenting promising horizon widespread application

Язык: Английский

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Unveiling Organic Electrode Materials in Aqueous Zinc-Ion Batteries: From Structural Design to Electrochemical Performance

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Май 14, 2024

Aqueous zinc-ion batteries (AZIBs) are one of the most compelling alternatives lithium-ion due to their inherent safety and economics viability. In response growing demand for green sustainable energy storage solutions, organic electrodes with scalability from inexpensive starting materials potential biodegradation after use have become a prominent choice AZIBs. Despite gratifying progresses molecules electrochemical performance in AZIBs, research is still infancy hampered by certain issues underlying complex electrochemistry. Strategies designing electrode AZIBs high specific capacity long cycling life discussed detail this review. Specifically, we put emphasis on unique electrochemistry different redox-active structures provide in-depth understanding working mechanisms. addition, highlight importance molecular size/dimension regarding profound impact performances. Finally, challenges perspectives developing point view future We hope valuable evaluation our context give inspiration rational design high-performance

Язык: Английский

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High‐Voltage Recyclable Organic Cathode Enabled by Heteroatomic Substitution for Aqueous Zinc‐Ion Batteries

Advanced Energy Materials, Год журнала: 2024, Номер 14(21)

Опубликована: Март 11, 2024

Abstract N‐type organic compounds present themselves as promising high‐capacity cathodes for aqueous Zn‐ion batteries. However, a common challenge is their working voltages often falling below 1 V versus Zn 2+ /Zn. To bridge this gap, high‐voltage material first developed, 5,6,11,12‐tetraazanaphthacene (TANC), using heteroatomic substitution strategy. TANC feature large π‐conjugated plane enriched with π−π interactions, which not only enhancing structural stability but also boosting charge transfer kinetics. The cathode achieved from its dihydro precursor, denoted 2H‐TANC, via facile in situ activation process within the battery itself. This electrochemical synthesis method cost‐effective and environmentally friendly compared to traditional chemical method. shows record‐high discharge voltage of 1.15 (vs /Zn) among n‐type materials maintains cycling over 47,500 cycles. Furthermore, spent electrodes can be efficiently recycled simple extraction process. work marks significant step toward development high‐voltage, affordable, recyclable electrode materials, steering them forefront future sustainable technologies.

Язык: Английский

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π-Conjugated N-heterocyclic compound with redox-active quinone and pyrazine moieties as a high-capacity organic cathode for aqueous zinc-ion batteries

Chemical Engineering Journal, Год журнала: 2023, Номер 461, С. 141850 - 141850

Опубликована: Фев. 11, 2023

Язык: Английский

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Advanced organic electrode materials for aqueous rechargeable batteries

Science China Chemistry, Год журнала: 2023, Номер 67(1), С. 137 - 164

Опубликована: Июнь 5, 2023

Язык: Английский

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Anion‐Dependent Redox Chemistry of p‐Type Poly(vinyldimethylphenazine) Cathode Materials

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(24)

Опубликована: Апрель 12, 2023

Metal-free organic electrode materials have attracted vast research attention owing to their designable structures and tunable electrochemical properties. Although n-type cathode could be used in various metal-ion batteries, p-type ones with high potential can deliver energy density. Herein, we report a new polymeric material, poly(2-vinyl-5,10-dimethyl-dihydrophenazine) (PVDMP), theoretical capacity of 227 mAh g-1 . PVDMP featuring two-step redox reaction will doped by two anions maintain electroneutrality during oxidation, which resulted an anion-dependent behavior PVDMP-based cathode. The suitable dopant anion for was selected the doping mechanism confirmed. Under optimized condition, initial 220 at 5 C even remains 150 after 3900 cycles. This work not only provides kind but also deepens understanding its chemistry.

Язык: Английский

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Boosting H⁺ Storage in Aqueous Zinc Ion Batteries via Integrating Redox‐Active Sites into Hydrogen‐Bonded Organic Frameworks with Strong π‐π Stacking

Angewandte Chemie International Edition, Год журнала: 2023, Номер 63(3)

Опубликована: Окт. 28, 2023

In the emerging aqueous zinc ion batteries (AZIBs), proton (H

Язык: Английский

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Immobilizing Quinone‐Fused Aza‐Phenazine into π‐d Conjugated Coordination Polymers with Multiple‐Active Sites for Sodium‐Ion Batteries

Small, Год журнала: 2023, Номер 19(35)

Опубликована: Апрель 27, 2023

The development of coordination polymers with π-d conjugation (CCPs) provides ide prospects for exploring the next generation environmental-friendliness energy storage systems. Herein, synthesis, experimental characterizations, and Na-ion mechanism CCPs multiple-active sites are reported, which use quinone-fused aza-phenazine (AP) aza-phenazin as organic ligands coordinated metal center (Ni2+ ). Among them, NiQAP cathode material exhibits impressive electrochemical properties applied in sodium-ion batteries (SIBs), including high initial/stable discharge specific capacities (180.0/225.6 mAh g-1 ) at 0.05 A , a long-term cycle stability up to 10,000 cycles 1.0 reversible capacity 100.1 good rate capability 99.6 even 5.0 . Moreover, is also performed by density functional theory (DFT) calculation, showing C≐O C≐N (in quinone phenazine structure) NiO4 unit) storage. These results highlight importance electrode units provide foundation further studying multiple active

Язык: Английский

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