Rare Metals, Journal Year: 2024, Volume and Issue: 43(5), P. 1867 - 1885
Published: Feb. 4, 2024
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(13)
Published: Jan. 25, 2023
Abstract With fast (de)coordination kinetics, the smallest and lightest proton stands out as most ideal charge carrier for aqueous Zn‐organic batteries (ZOBs). Hydrogen‐bonding networks with rapid Grotthuss conduction is particularly suitable organic cathodes, yet not reported. We report supramolecular self‐assembly of cyanuric acid 1,3,5‐triazine‐2,4,6‐triamine into superstructures through in‐plane H‐bonds out‐of‐plane π‐π interaction. The exhibit highly stable lock‐and‐key H‐bonding an ultralow activation energy protonation (0.09 eV vs. 0.25 zincification). Then, high‐kinetics H + coordination prior to Zn 2+ protophilic C=O sites via a two‐step nine‐electron reaction. assembled ZOBs show high‐rate capability (135 mAh g −1 at 150 A ), high density (267 Wh kg cathode ) ultra‐long life (50 000 cycles 10 becoming state‐of‐the‐art in comprehensive performances.
Language: Английский
Citations
95
Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)
Published: Jan. 13, 2023
Novel small sulfur heterocyclic quinones (6a,16a-dihydrobenzo[b]naphtho[2',3':5,6][1,4]dithiino[2,3-i]thianthrene-5,7,9,14,16,18-hexaone (4S6Q) and benzo[b]naphtho[2',3':5,6][1,4]dithiino[2,3-i]thianthrene-5,9,14,18-tetraone (4S4Q)) are developed by molecule structural design method as cathode for aqueous zinc-organic batteries. The conjugated thioether (-S-) bonds connected units not only improve the conductivity of compounds but also inhibit their dissolution both extended π-conjugated plane constructed flexible molecular skeleton. Hence, Zn//4S6Q Zn//4S4Q batteries exhibit satisfactory electrochemical performance based on 3.5 mol L-1 (M) Zn(ClO4)2 electrolyte. For instance, battery obtains 240 208.6 mAh g-1 discharge capacity at 150 mA 30 A g-1, respectively. excellent rate capability is ascribed to fast reaction kinetics. This system displays a superlong life 20,000 cycles with no fading 3 g-1. Additionally, H+-storage mechanism 4S6Q compound demonstrated ex situ analyses density functional theory calculations. Impressively, can normally work - 60 °C benefiting from anti-freezing electrolyte maintain high 201.7 which 86.2% 25 °C. cutting-edge performances these novel make them alternative electrode materials Zn-organic
Language: Английский
Citations
64
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(38)
Published: July 29, 2023
Organic small molecules as high-capacity cathodes for Zn-organic batteries have inspired numerous interests, but are trapped by their easy-dissolution in electrolytes. Here we knit ultrastable lock-and-key hydrogen-bonding networks between 2, 7-dinitropyrene-4, 5, 9, 10-tetraone (DNPT) and NH4+ charge carrier. DNPT with octuple-active carbonyl/nitro centers (H-bond acceptor) redox-exclusively accessible flexible tetrahedral ions donator) exclude larger rigid Zn2+ , due to a lower activation energy (0.14 vs. 0.31 eV). coordinated H-bonding chemistry conquers the stability barrier of electrolyte, gives fast diffusion kinetics non-metallic A stable two-step 4e- coordination cathode harvests high capacity (320 mAh g-1 ), high-rate capability (50 ) an ultralong life (60,000 cycles). This finding points new paradigm H-bond stabilized organic design advanced zinc batteries.
Language: Английский
Citations
56
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(3)
Published: Nov. 28, 2023
Compared with Zn
Language: Английский
Citations
47
Advanced Science, Journal Year: 2023, Volume and Issue: 11(8)
Published: Nov. 20, 2023
Abstract Aqueous zinc‐ion batteries (AZIBs) are gaining popularity for their cost‐effectiveness, safety, and utilization of abundant resources. MXenes, which possess outstanding conductivity, controllable surface chemistry, structural adaptability, widely recognized as a highly versatile platform AZIBs. MXenes offer unique set functions AZIBs, yet significance has not been systematically summarized. This review article provides an up‐to‐date overview MXenes‐based electrode materials with focus on the in these materials. The discussion starts derivatives cathode side, where they serve 2D conductive substrate, 3D framework, flexible support, coating layer. can act both active material precursor to cathode. On anode include host, zinc metal protection, electrolyte additive, separator modification. also highlights technical challenges key hurdles that currently face
Language: Английский
Citations
42
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)
Published: March 29, 2024
Abstract The advancement of aqueous micro‐supercapacitors offers an enticing prospect for a broad spectrum applications, spanning from wearable electronics to micro‐robotics and sensors. Unfortunately, conventional are characterized by low capacity slopy voltage profiles, limiting their energy density capabilities. To enhance the performance these devices, use 2D MXene‐based compounds has recently been proposed. Apart capacitive contributions, structures can be loaded with redox‐active nanowires which increase stabilize operation voltage. However, introducing rigid into MXene films typically leads significant decline in mechanical properties, particularly terms flexibility. overcome this issue, super stretchable micro‐pseudocapacitor electrodes composed nanosheets situ reconstructed Ag nanoparticles (Ag‐NP‐MXene) herein demonstrated, delivering high density, stable ≈1 V, fast charging Careful experimental analysis theoretical simulations mechanism Ag‐NP‐MXene reveal dual nature charge storage involving ad(de)sorption ions conversion reaction nanoparticles. superior properties synthesized obtained through construction structure show ultra stretchability, allowing devices provide output even at 100% elongation.
Language: Английский
Citations
36
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(16)
Published: Feb. 19, 2024
Bipolar organics fuse the merits of n/p-type redox reactions for better Zn-organic batteries (ZOBs), but face capacity plafond due to low density active units and single-electron reactions. Here we report multielectron redox-bipolar tetranitroporphyrin (TNP) with quadruple two-electron-accepting n-type nitro motifs dual-electron-donating p-type amine moieties towards high-capacity-voltage ZOBs. TNP cathode initiates high-kinetics, hybrid anion-cation 10e
Language: Английский
Citations
35
Small, Journal Year: 2024, Volume and Issue: 20(26)
Published: Jan. 17, 2024
Abstract Zinc‐iodine batteries (Zn‐I2) are extremely attractive as the safe and cost‐effective scalable energy storage system in stationary applications. However, inefficient redox kinetics “shuttling effect” of iodine species result unsatisfactory efficiency short cycle life, hindering their commercialization. In this work, Ni single atoms highly dispersed on carbon fibers is designed synthesized anchoring sites dual catalysts for Zn‐I2 batteries, successfully inhibit shuttling boost reaction kinetics. Theoretical calculations indicate that reinforced d‐p orbital hybridization charge interaction between single‐atoms effectively enhance confinement species. also accelerate conversion reactions with tailored bonding structure I─I bonds reduced barrier Consequently, high‐rate performance (180 mAh g −1 at 3 A ), cycling stability (capacity retention 74% after 5900 cycles) high (90% ) achieved. The work provides an effective strategy development hosts catalytic activity batteries.
Language: Английский
Citations
33
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)
Published: March 11, 2024
Abstract Zinc‐ion batteries (ZIBs) have become a global research hotspot in recent years due to their eco‐friendliness, safety, abundant resources, and low cost. However, some significant challenges seriously affect overall performance, thus hindering further development practical applications. Recently, multifunctional adjustable 2D carbides nitrides (MXenes) are extensively used for the modification of ZIBs, fruitful achievements achieved. In order make systematic understanding these studies, it is highly desirable provide an overview MXenes based on methods action mechanisms. this review, basic introduction ZIBs presented main approaches solving issues discussed detail, including activation composite strategies cathode, interface engineering, structural optimization, zinc metal‐free anode strategy anode, solid‐state electrolyte, functionalized separator. Importantly, functions related mechanisms various components analyzed depth. Finally, pathways summarized, future directions prospected.
Language: Английский
Citations
32
Advanced Science, Journal Year: 2024, Volume and Issue: 11(19)
Published: March 13, 2024
Abstract Zinc‐organic batteries (ZOBs) are receiving widespread attention as up‐and‐coming energy‐storage systems due to their sustainability, operational safety and low cost. Charge carrier is one of the critical factors affecting redox kinetics electrochemical performances ZOBs. Compared with conventional large‐sized sluggish Zn 2+ storage, non‐metallic charge carriers small hydrated size light weight show accelerated interfacial dehydration fast reaction kinetics, enabling superior metrics for Thus, it valuable ongoing works build better ZOBs ion storage. In this review, versatile cationic (H + , NH 4 ) anionic (Cl − OH CF 3 SO 2− first categorized a brief comparison respective physicochemical properties chemical interactions redox‐active organic materials. Furthermore, work highlights implementation effectiveness ions in ZOBs, giving insights into impact types on (capacity, rate capability, operation voltage, cycle life) cathodes. Finally, challenges perspectives non‐metal‐ion‐based outlined guild future development next‐generation energy communities.
Language: Английский
Citations
28