Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 1, 2024
Language: Английский
Nano Letters, Journal Year: 2023, Volume and Issue: 23(11), P. 5272 - 5280
Published: June 1, 2023
Zinc-iodine (Zn-I2) batteries have garnered significant attention for their high energy density, low cost, and inherent safety. However, several challenges, including polyiodide dissolution shuttling, sluggish iodine redox kinetics, electrical conductivity, limit practical applications. Herein, we designed a highly efficient electrocatalyst Zn-I2 by uniformly dispersing Ni single atoms (NiSAs) on hierarchical porous carbon skeletons (NiSAs-HPC). In situ Raman analysis revealed that the conversion of soluble polyiodides (I3- I5-) was significantly accelerated using NiSAs-HPC because remarkable electrocatalytic activity NiSAs. The resulting with NiSAs-HPC/I2 cathodes delivered exceptional rate capability (121 mAh g-1 at 50 C), ultralong cyclic stability (over 40 000 cycles C). Even under 11.6 mg cm-2 iodine, still exhibited an impressive capacity retention 93.4% 141 after 10 C.
Language: Английский
Citations
94
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(9), P. 3146 - 3156
Published: Jan. 1, 2024
A zincophilic Bi-metal nanosheets guiding iso-plating/stripping strategy is developed to overcome Zn powder anode collapse and achieve ultra-long life.
Language: Английский
Citations
26
Energy storage materials, Journal Year: 2024, Volume and Issue: 70, P. 103411 - 103411
Published: April 27, 2024
Language: Английский
Citations
22
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(31)
Published: May 21, 2024
Abstract Low‐cost, high‐voltage‐platform, and high‐capacity MnO 2 is the most promising cathode candidate for developing high‐energy‐density aqueous zinc‐ion batteries. However, Buckets effect of runaway phase transition irreversible dissolution restricts electrochemical performance . To address this issue, report presents a bottom‐up targeted assembly concept driven by Gibbs free energy design robust Ni‐MnO 2‐x F x host via Ni 2+ pre‐intercalation coupled with fluorine doping. The regulated coordination interlayer reinforcement interfacial defect repair, which prevents “layer‐to‐spinel” inhibits during long‐term cycling. As expected, provides superior H + /Zn storage across wide temperature range. A capacity 180.4 mAh g −1 retained after 1000 cycles at , high specific 293.9 250 50 °C 144.5 3000 0 0.5 This work new insights into stable battery‐compatible hosts batteries as well other battery chemistries.
Language: Английский
Citations
21
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(38)
Published: June 29, 2024
Batteries always encounter uncontrollable failure or performance decay under extreme temperature environments, which is largely limited by the properties of electrolytes. Herein, an entropy-driven hydrated eutectic electrolyte (HEE) with diverse solvation configurations proposed to expand operating range Zn-ion batteries. The HEE possesses over 40 types Zn
Language: Английский
Citations
16
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
Abstract Exploring advanced high‐performance electrode materials for aqueous zinc‐ion batteries (AZIBs) is of enormous significance the development and commercial application AZIBs. Herein, nanoparticle assemble hollow structured Fe 3 O 4 @ZnFe 2 @NC/Mo TiC T x with excellent specific capacity cycling performance fabricated via a designed method, an strategy First proposed to modulate charge storage performance. The superior can be attributed enhanced electrochemical activity reversibility, which are mainly achieved by in situ Zn adulteration trigger electron redistribution between Fe, Zn, atoms. Additionally, unique structure multiple components provide plentiful active sites, ameliorating affinity electrolyte facilitating kinetics. great ascribed improved structural stability loading two robust substrates intimately coated carbon MXene. renders distinctly higher (364.4 mAh·g −1 ) than that (92.2 ), @NC (211.2 (276.8 as well 86.2% retention over 1000 cycles. Moreover, mechanism new effects composition regulation revealed characterizations computations.
Language: Английский
Citations
2
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(28)
Published: June 11, 2023
Abstract Aqueous zinc‐based batteries with high energy density are highly sought after to satisfy the increasing demands on electrochemical device thanks advantages of safety, low cost, and fast kinetics. In this work, a high‐performance hybrid Zn–S battery (h‐ZnSB) is reported by coupling an alkali Zn anode acidic sulfur electrode. To end, atomic Zn–N 4 dispersed nitrogen‐doped hollow porous carbon (Zn–NHPC) developed as host that enhances efficiency due higher affinity CuS than N‐doped graphene, which can reduce vulcanization reaction barrier too graphene. The shows desired properties, including open‐circuit voltage 1.81 V, specific capacities 2250 mAh g −1 at 1 A 1500 10 , well 2372 Wh kg based total mass S/C composites. present work may provide promising route for development high‐energy high‐safety aqueous batteries.
Language: Английский
Citations
35
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)
Published: Nov. 27, 2023
Abstract Transition metal chalcogenide (TMD) electrodes in sodium‐ion batteries exhibit intrinsic shortcomings such as sluggish reaction kinetics, unstable conversion thermodynamics, and substantial volumetric strain effects, which lead to electrochemical failure. This report unlocks a design paradigm of VSe 2− x /C in‐plane heterojunction with built‐in anion vacancy, achieved through an situ functionalization self‐limited growth approach. Theoretical experimental investigations reveal the bifunctional role Se vacancy enhancing ion diffusion kinetics structural thermodynamics Na 2 active phases. Moreover, this heterostructure facilitates complete face contact between two components tight interfacial conductive phases, resulting enhanced reversibility. The electrode exhibits remarkable storage performance, retaining specific capacities 448.7 424.9 mAh g −1 after 1000 cycles at current densities 5 10 A , respectively. it high capacity 353.1 even under demanding condition 100 surpassing most previous achievements. proposed strategy can be extended other V S 8− O 5− ‐based heterojunctions, marking conceptual breakthrough advanced for constructing high‐performance batteries.
Language: Английский
Citations
26
Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101393 - 101393
Published: Oct. 1, 2024
Language: Английский
Citations
10
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 21, 2024
Abstract The kinetics and storage‐capacity of NiCoMg‐ternary layered double hydroxide (NiCoMg‐LDH) are successfully boosted by valence engineering. As the cathode for aqueous magnesium‐ion batteries (AMIBs), assembled NiCoMg‐LDH//active carbon (AC) delivers a high specific discharge capacity (121.0 mAh·g −1 at 0.2 A·g ), long‐term cycling stability (85% retention after 2000 cycles 1.0 ) an excellent performance −30 °C. Moreover, NiCoMg‐LDH//perylenediimide (PTCDI) is assembled, achieving stability. X‐ray absorption spectra (XAS)/X‐ray photoelectron spectroscopy (XPS) analyses Density functional theory (DFT) calculations disclose that electrons redistributed due to 3 d orbital overlap Co/Ni atoms in NiCoMg‐LDH, which obviously reduces states atoms, enhances Mg─O bond strength degree hybridization O 2 p orbitals. Hence, electronic conductivity significantly enhanced electrostatic repulsion between Mg 2+ host layers greatly reduced, giving rise improved diffusion . Furthermore, situ Raman/X‐ray diffraction (XRD) ex XPS reveal corresponding energy‐storage mechanism. This paper not only demonstrates feasibility LDHs as AMIBs, but also offers new modification method engineering high‐performance electrode materials.
Language: Английский
Citations
9