Bi2O3/NbSe2@g-CN hybrids study on enhanced energy storage and hydrogen evolution reaction performance, durability and potential applications

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2025-04-20 DOI:10.1016/j.inoche.2025.114511

Hasan B. Albargi , Muhammad Ashraf , M.W. Iqbal , Summaira Khan , Abhinav Kumar , Ehtisham Umar , Muhammad Arslan Sunny , M.A. Diab , Tahmina Yaseen

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Abstract

Classifying active species in electrocatalysts for the hydrogen evolution reaction (HER) is essential for advancing catalytic applications. However, achieving optimal morphology, structure, and composition remains a challenge. In this study, NbSe₂ is an active catalytic center, enhancing electrochemical activity due to its high conductivity and layered structure, facilitating charge transfer. Bi₂O₃ plays a crucial role in nanostructure configuration and exhibits excellent conductivity. Graphitic carbon nitride (g-CN) is incorporated to boost performance further to establish a conductive network, enhancing charge transport and stability. The Bi₂O₃/NbSe₂@g-CN electrode demonstrates a high specific capacity (Qs) of 350C g⁻¹ at a current density (J_d) of 2 A g⁻¹, with long-term stability, charge efficiency of 84.8 %, and discharge efficiency of 79.6 % over 12,000 cycles. A full electrode assembly, Bi₂O₃/NbSe₂@g-CN//AC, operating at 1.6 V in 1 M KOH, delivers an energy density (E_d) of 74.7 Wh kg⁻¹ and a power density (P_d) of 1600 W kg⁻¹. These findings provide valuable insights into optimizing Bi₂O₃/NbSe₂@g-CN composites for high-performance energy storage devices and HER applications.

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Bi2O3/NbSe2@g-CN杂化体增强储能和析氢反应性能、耐久性及潜在应用研究

析氢反应电催化剂中活性物质的分类对推进析氢反应电催化剂的应用具有重要意义。然而，实现最佳的形态、结构和组成仍然是一个挑战。在本研究中，NbSe2是一个活性催化中心，由于其高电导率和层状结构，增强了电化学活性，促进了电荷转移。Bi2O3在纳米结构配置中起着至关重要的作用，并具有优异的导电性。石墨碳氮化（g-CN）被加入以进一步提高性能，建立导电网络，增强电荷传输和稳定性。Bi2O3/NbSe2@g-CN电极在2 a g−1电流密度（Jd）下具有350C g−1的高比容量（Qs），具有长期稳定性，充电效率为84.8%，放电效率为79.6%。一个完整的电极组件，Bi2O3/NbSe2@g-CN//AC，在1 M KOH下工作在1.6 V，提供74.7 Wh kg - 1的能量密度（Ed）和1600 W kg - 1的功率密度（Pd）。这些发现为优化用于高性能储能器件和HER应用的Bi2O3/NbSe2@g-CN复合材料提供了有价值的见解。

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.