采用C掺杂的方法优化了TiVZrNbFe高熵合金的相比和导热系数，提高了其储氢性能

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-03-31 DOI:10.1016/j.materresbull.2025.113456

Sibo Wang , Hongkui Zhang , Zhen Wen , Yue Li , Tong Zhang , Yingdong Qu , Guanglong Li

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引用次数: 0

摘要

高熵合金因其广泛的成分可调性和独特的高熵效应而成为一种新型储氢材料，具有重要的应用潜力。基于tizrnbfe高熵合金中掺杂C元素，对合金进行整体置换，最终制备出（Ti30.55V25.85Zr7.05Nb30.55Fe6.00） 1-xCx （x = 0.01,0.03,0.05,0.07,0.09）高熵合金。结果表明：C元素促进了C14 Laves相的形成，随着碳含量的增加，BCC相与C14 Laves相的比值增大；此外，Ti29.63V25.08Zr6.84Nb29.63Fe5.822C3中的C元素增加了热导率，降低了吸氢表观活化能。在100℃、3 MPa氢气压力下，Ti29.63V25.08Zr6.84Nb29.63Fe5.822C3的吸氢容量为2.13 wt %。本文提出了在高熵储氢合金中掺杂C元素的设计思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

The phase ratio and thermal conductivity of TiVZrNbFe high entropy alloy were optimized by C doping to improve its hydrogen storage performance

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The phase ratio and thermal conductivity of TiVZrNbFe high entropy alloy were optimized by C doping to improve its hydrogen storage performance

High entropy alloys (HEAs) have become a new type of hydrogen storage materials due to their extensive composition adjustability and unique high entropy effect, and have important application potential. Based on TiVZrNbFe high entropy alloys doped C element, the alloy integral replacement, finally was prepared (Ti_30.55V_25.85Zr_7.05Nb_30.55Fe_6.00) _1-xC_x (x = 0.01,0.03,0.05,0.07,0.09) high entropy alloys. The results show that C element promotes the formation of C14 Laves phase, and the ratio of BCC phase to C14 Laves phase increases with the increase of carbon content. In addition, the C element in Ti_29.63V_25.08Zr_6.84Nb_29.63Fe_5.822C₃ increased the thermal conductivity and decreased the apparent activation energy of hydrogen absorption. The hydrogen absorption capacity of Ti_29.63V_25.08Zr_6.84Nb_29.63Fe_5.822C₃ is 2.13 wt % at 3 MPa hydrogen pressure at 100 °C. This paper provides a design idea for doping C element in high entropy hydrogen storage alloys.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.