The Role of High‐Entropy Materials in Lithium‐Based Rechargeable Batteries

Guo, Rongnan; Yang, Yi; Zhao, Chongchong; Huo, Feng; Xue, Jiaojiao; He, Jinhai; Sun, Bowen; Sun, Zixu; Liu, Hua Kun; Dou, Shi Xue

doi:10.1002/adfm.202313168

Cited by 21 publications

(8 citation statements)

References 165 publications

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“…Hydrogen, as a sustainable and clean energy vector, stands out as a viable substitute for fossil fuels, which not only contribute to environmental pollution but are also depleting worldwide. , The generation of green hydrogen via electrocatalytic water splitting, powered by renewable electricity, is a compelling approach, yet it is currently hampered by the reliance on costly noble metal electrocatalysts, such as Pt, for the cathodic hydrogen evolution reaction (HER). , MoS 2 , with its affordable cost and advantageous layered crystal structure, offers near-zero hydrogen adsorption energy (Δ G H* ) at its edges and defects, positioning it as a potential replacement for Pt in HER applications. − However, the practical catalytic activity of MoS 2 is often limited due to the inert nature of its basal plane toward HER, and its wide band gap hinders efficient charge transfer and electron mobility, thus constraining the catalytic process. , Strategic doping with heteroatoms has been recognized as an effective method to engineer MoS 2 by introducing defects and altering the host material’s intrinsic properties. , Among various dopants, selenium (Se) is particularly promising due to its high structural compatibility with MoS 2 , allowing for the creation of MoS x Se 2– x with a broad range of Se content. − Furthermore, Se’s lower electronegativity compared to sulfur can modulate the electronic structure of adjacent S atoms, potentially enhancing the catalytic performance of MoS 2 for HER applications.…”

Section: Introductionmentioning

confidence: 99%

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoS_xSe_2–x Electrocatalysts

Li,

Wang,

et al. 2024

ACS Sustainable Chem. Eng.

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MoS x Se2–x emerges as a potent alternative to Pt-based electrodes in the electrochemical hydrogen evolution reaction (HER), although its practical application is hindered by suboptimal synthetic methods. Herein, a KSCN molten salt strategy is introduced, enabling the straightforward synthesis of MoS x Se2–x at a modest temperature of 320 °C through a one-step heating process involving Se powder and Na2MoO4 in a muffle furnace. It is elucidated that MoO4 2– facilitates the decomposition of KSCN to S2–, which subsequently activates Se powder, culminating in the formation of the Se x S2– polyanion. This polyanion then interacts with MoO4 2–, yielding MoS x Se2–x characterized by a profusion of anion vacancies. This is attributed to the introduction of Se heteroatoms, causing lattice distortion and the substantial steric hindrance of Se x S2–, limiting crystal growth. Theoretical analyses indicate that the presence of Se atoms and anion vacancies collaboratively modulates the electronic structure of MoS x Se2–x . This results in a minimized band gap of 0.88 eV and an almost zero ΔG H* of 0.09 eV in the optimized MoS1.5Se0.5. Consequently, MoS1.5Se0.5 exhibits remarkable HER performance, characterized by a low η10 of 103 mV and a minimal Tafel slope of 33 mV dec–1, alongside robust stability. This research not only unveils a potent electrocatalyst for HER but also introduces a simplified synthesis strategy for transition metal selenosulfides, broadening their applicability across various domains.

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Section: Introductionmentioning

confidence: 99%

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoS_xSe_2–x Electrocatalysts

Li,

Wang,

et al. 2024

ACS Sustainable Chem. Eng.

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“…Rapid developments in electronics, transportation, and industry have accelerated the demand for high-performance energy storage devices. In addition to conventional Liion batteries, [1][2][3] novel alkali metal ion batteries (K, Na) and multivalent metal ion batteries (Zn, Mg, and Al) have also been extensively studied. [4][5][6][7][8][9][10][11][12] Among them, aqueous Zn-ion batteries (AZIBs) are considered as one of the most promising energy storage systems, owing to their high safety, environmental friendliness, and abundant zinc resources.…”

Section: Introductionmentioning

confidence: 99%

Massively Reconstructing Hydrogen Bonding Network and Coordination Structure Enabled by a Natural Multifunctional Co‐Solvent for Practical Aqueous Zn‐Ion Batteries

Yu,

Zhang,

Zhang

et al. 2024

Advanced Science

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The practical application of aqueous Zn‐ion batteries (AZIBs) is hindered by the crazy Zn dendrites growth and the H2O‐induced side reactions, which rapidly consume the Zn anode and H2O molecules, especially under the lean electrolyte and Zn anode. Herein, a natural disaccharide, d‐trehalose (DT), is exploited as a novel multifunctional co‐solvent to address the above issues. Molecular dynamics simulations and spectral characterizations demonstrate that DT with abundant polar −OH groups can form strong interactions with Zn2+ ions and H2O molecules, and thus massively reconstruct the coordination structure of Zn2+ ions and the hydrogen bonding network of the electrolyte. Especially, the strong H‐bonds between DT and H2O molecules can not only effectively suppress the H2O activity but also prevent the rearrangement of H2O molecules at low temperature. Consequently, the AZIBs using DT30 electrolyte can show high cycling stability even under lean electrolyte (E/C ratio = 2.95 µL mAh−1), low N/P ratio (3.4), and low temperature (−12 °C). As a proof‐of‐concept, a Zn||LiFePO4 pack with LiFePO4 loading as high as 506.49 mg can be achieved. Therefore, DT as an eco‐friendly multifunctional co‐solvent provides a sustainable and effective strategy for the practical application of AZIBs.

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“…Because of the continues development on science and technology, the ever-increasing demand of new energy vehicles and portable electronic devices presents greater challenges for energy supplying [1]. There is an urgent need on newtype electrochemical energy conversion and storage to meet the vast market requirements, as well as maintain the sustainable development of society [2,3]. Compared to batteries, supercapacitors (which are often called 'electrochemical supercapacitors', ESs) have attracted significant attentions in the flourishing path of modern energy storage technology * Authors to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Low-crystalline urchin-like CuCo₂O₄/rGO composite for high-performance supercapacitor

Wang,

Hu,

Yao

et al. 2024

J. Phys. D: Appl. Phys.

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To meet the excellent capacity, power density and long lifespan for supercapacitors, developing advanced transition-metal oxide electrode materials is an important topic. Herein, we explored the effect of alkali source hydrolysis on the structural feature of CuCo2O4 during the growing process. It is found that urea with stronger hydrolysis ability leads to better morphology but larger crystalline grain size. Further, the grain size is decreased by introducing reduced graphene oxide (rGO). Consequently, the urea-derived CuCo2O4/rGO composite with urchin-like hierarchy configuration and small crystalline grain size provides a specific capacity of 1664 C g−1 at current density of 1 A g−1, and remains 65.3% of initial capacity when the current density increases to 30 A g−1. The symmetric supercapacitor achieves a high energy density (16 Wh kg−1 at 7200 W kg−1) and cycle stability (93.2% capacity retention after 10 000 cycles at 10 A g−1). This study highlights the inherent relation between the structural feature and synthesis condition.

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The Role of High‐Entropy Materials in Lithium‐Based Rechargeable Batteries

Cited by 21 publications

References 165 publications

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoS_xSe_2–x Electrocatalysts

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoS_xSe_2–x Electrocatalysts

Massively Reconstructing Hydrogen Bonding Network and Coordination Structure Enabled by a Natural Multifunctional Co‐Solvent for Practical Aqueous Zn‐Ion Batteries

Low-crystalline urchin-like CuCo₂O₄/rGO composite for high-performance supercapacitor

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The Role of High‐Entropy Materials in Lithium‐Based Rechargeable Batteries

Cited by 21 publications

References 165 publications

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoSxSe2–x Electrocatalysts

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoSxSe2–x Electrocatalysts

Massively Reconstructing Hydrogen Bonding Network and Coordination Structure Enabled by a Natural Multifunctional Co‐Solvent for Practical Aqueous Zn‐Ion Batteries

Low-crystalline urchin-like CuCo2O4/rGO composite for high-performance supercapacitor

Contact Info

Product

Resources

About

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoS_xSe_2–x Electrocatalysts

Boosted Hydrogen Evolution via Molten Salt Synthesis of Vacancy-Rich MoS_xSe_2–x Electrocatalysts

Low-crystalline urchin-like CuCo₂O₄/rGO composite for high-performance supercapacitor