Interface and body engineering via aluminum hydride enabling Ti-V-Cr-Mn alloy with enhanced hydrogen storage performance

Ding, Nan; Liu, Wanqiang; Chen, Bingbing; Wang, Shaohua; Zhao, Shaolei; Wang, Qingshuang; Wang, Chunli; Yin, Dongming; Wang, Limin; Cheng, Yong

doi:10.1016/j.cej.2023.144143

Cited by 25 publications

(3 citation statements)

References 46 publications

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“…This suggests that Al is more inclined to exist in the adsorbed state within the Ti─V─Cr─Mn, which aligns with our previously reported findings. [15] Hence, the structure of Ti─V─Cr─Mn─Al, as depicted in Figure 1c, is defined for future utilization. Thereafter, Li will be further doped in Ti─V─Cr─Mn─Al in the above two forms.…”

Section: The Thermodynamic Mechanism By Density Functional Theory (Df...mentioning

confidence: 99%

“…Previous research has shown that the addition of AlH 3 for solid solution V-based alloys substantially improves the activation properties, hydrogen desorption temperatures, and cycling ability. [15] Nevertheless, the rate of hydrogen absorption is affected because of the limited solid solubility of Al atoms in the alloy. While the theoretical hydrogen desorption capacity of LiAlH 4 material is 10.6 wt.% with a reversible capacity of 7.9 wt.%.…”

Section: Introductionmentioning

confidence: 99%

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Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH₄

Ding,

Liu,

Yin

et al. 2023

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V‐based solid solution materials hold a significant position in the realm of hydrogen storage materials because of its high hydrogen storage capacity. However, the current dehydrogenation temperature of V‐based solid solution exceeds 350 °C, making it challenging to fulfill the appliance under moderate conditions. Here advancements in the hydrogen storage properties and related mechanisms of TiV1.1Cr0.3Mn0.6 + x LiAlH4 (x = 0, 5, 8, 10 wt.%) composites is presented. According to the first principle calculation analysis, the inclusion of Al and Li atoms will lower the binding energy of hydride, thus enhancing the hydrogen absorption reaction and significantly decreasing the activation difficulty. Furthermore, based on crystal orbital Hamilton population (COHP) analysis, the strength of the V─H and Ti─H bonds after doping LiAlH4 are reduced, leading to a decrease of the hydrogen release activation energy (Ea) for the V‐based solid solution material, thus the hydrogen release process is easier to carry out. Additionally, the structure of doped LiAlH4 exhibits an outstanding hydrogen release rate of 2.001 wt.% at 323 K and remarkable cycling stability.

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Section: The Thermodynamic Mechanism By Density Functional Theory (Df...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH₄

Ding,

Liu,

Yin

et al. 2023

Small

Self Cite

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“…Various storage techniques have been proposed, including physical (compressed gas and liquid hydrogen) and chemical (material-based) methods. , While physical storage provides high gravimetric capacity, it often incurs energy penalties from compression or liquefaction. Alternatively, chemical storage like metal hydrides, , nanomaterials, , graphene materials, , and organic compounds , are being developed. Among them, promising room-temperature hydrogen storage alloys such as LaNi 5 , TiMn 2 , , TiFe, LaMgNi, − and body-centered cubic (BCC)-type alloys − have emerged for both stationary and mobile applications.…”

Section: Introductionmentioning

confidence: 99%

Development of V-Free BCC Structured Alloys for Hydrogen Storage

Hu,

Tang,

Xiao

et al. 2023

ACS Appl. Energy Mater.

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V-free body-centered cubic (BCC) structured hydrogen storage alloys have gained significant attention for their low cost and high theoretical hydrogen storage capacity (3.8 wt %). However, before practical application, critical challenges, such as low dehydriding capacity, activation difficulty, and poor cyclic stability, need to be solved. In this work, an easily activated and high-performance V-free BCC-type alloy (Ti40Cr50Mo10Ce1) was successfully synthesized by heat treatment and Ce doping. The heat treatment significantly increased its dehydriding capacity to 2.5 wt %, attributed to a reduced slope factor (0.76–0.17), making it comparable to V-based BCC-type alloys. And the V-free BCC-type alloy, after Ce doping, enabled room-temperature hydrogen absorption, eliminating the need for high-temperature activation. Ce doping did not significantly affect the activation energy, enthalpy change, or hysteresis factor of the alloy during de/hydrogenation. Additionally, the V-free BCC-type alloy, after heat treatment and Ce doping, exhibited excellent cyclic stability, with a capacity retention rate of 90% after 100 cycles. This study provides valuable guidance for designing innovative and cost-effective hydrogen storage alloys.

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Preparation of CO₂‐activated Porous Graphene for Enhancing the Electrochemical Hydrogen Storage Properties of Co₉S₈ Material

Jia,

Li,

Wang

et al. 2023

ChemistrySelect

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In this work, Co9S8 hydrogen storage material was synthesized by mechanical alloying. To improve the electrocatalytic activity and conductivity of Co9S8, a series of porous reduced graphene oxide (PRGO) materials were fabricated via a facile CO2 activation treatment of RGO at different processing times. The composites of Co9S8 doping with different amount of PRGO were manufactured through ball milling. During the electrochemical hydrogen storage test, the porous Co9S8+PRGO exhibited higher discharge capacity than Co9S8+NRGO and conventional Co9S8. Moreover, the CO2 activation time and additive amount of PRGO had significant impact on the electrochemical properties of Co9S8. Ultimately, the electrode of 6 wt.% PRGO‐2 modified Co9S8 attained the optimum discharge capacity of 653 mAh/g. The special porous structure and high specific surface area of porous graphene could provide more electrochemical active sites and facilitate the hydrogen diffusion. After PRGO modification, the cycling stability, high‐rate dischargeability (HRD) and kinetic properties of Co9S8 were also enhanced. It can be concluded that porous graphene possesses better effect than conventional graphene in improving the performance of hydrogen storage alloy.

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Interface and body engineering via aluminum hydride enabling Ti-V-Cr-Mn alloy with enhanced hydrogen storage performance

Cited by 25 publications

References 46 publications

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH₄

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH₄

Development of V-Free BCC Structured Alloys for Hydrogen Storage

Preparation of CO₂‐activated Porous Graphene for Enhancing the Electrochemical Hydrogen Storage Properties of Co₉S₈ Material

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Interface and body engineering via aluminum hydride enabling Ti-V-Cr-Mn alloy with enhanced hydrogen storage performance

Cited by 25 publications

References 46 publications

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH4

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH4

Development of V-Free BCC Structured Alloys for Hydrogen Storage

Preparation of CO2‐activated Porous Graphene for Enhancing the Electrochemical Hydrogen Storage Properties of Co9S8 Material

Contact Info

Product

Resources

About

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH₄

Optimization Strategy in Hydrogen Storage Performance of Ti─V─Cr─Mn Alloys via LiAlH₄

Preparation of CO₂‐activated Porous Graphene for Enhancing the Electrochemical Hydrogen Storage Properties of Co₉S₈ Material