Advanced high-pressure metal hydride fabricated via Ti–Cr–Mn alloys for hybrid tank

Cao, Zhijie; Ouyang, Liuzhang; Wang, Hui; Liu, Jiangwen; Sun, Dalin; Zhang, Qingan; Zhu, Min

doi:10.1016/j.ijhydene.2014.12.093

Cited by 93 publications

(40 citation statements)

References 46 publications

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“…The thermodynamic properties of the JMC Ti 1.1 CrMn material were significantly different from the data reported in the literature for the same formulation [5,20,25]. The values of the operating pressures (fugacities) are on the order of 42%-58% lower than the corresponding literature data [20,25].…”

Section: Metal Hydride Characterization Resultscontrasting

confidence: 72%

High pressure thermal hydrogen compression employing Ti_1.1CrMn metal hydride material

Corgnale¹,

Sulic²

2019

J. Phys. Energy

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The use of Ti 1.1 CrMn metal hydride material in a thermal hydrogen compression system is investigated. The thermodynamic properties of the material, initially synthesized and annealed at 900°C for 48 h (for quantities on the order of 10 kg), are assessed performing pressureconcentration-temperature equilibrium tests for hydrogen absorption and desorption at pressure up to about 900 bar. Results show flat plateaus and reduced hysteresis. The calculated absorption enthalpy and entropy are 20.55 ± 0.13 kJ mol H2 1 and 102.16±3.00 J mol H2 1 -K −1 respectively. The desorption enthalpy and entropy are 22.89±0.45 kJ mol H2 1 and 107.80±10.45 J mol H2 1 -K −1 , respectively. The metal hydride achieves a weight capacity of approximately 1.8% at room temperature and maintain an approximately constant weight capacity during the cycling testing. This makes the material a suitable candidate for high pressure hydrogen compressors, achieving pressures on the order of 450 bar at temperatures of approximately 140°C. The same material composition is synthesized at laboratory scale quantities (on the order of 50 g), applying a modified annealing procedure (1200°C for 240 h). This allows higher operating pressures to be achieved, but the modified annealing process also produces (at least) an additional phase, namely the C15 Laves phase, present in the material along with the C14 Laves phase. Consequently, two pressure plateaus are present at each operating temperature, reducing the effective material weight capacity available for the compression application. A two-stage hybrid compressor concept is also presented, with the thermal hydride compressor paired with a lower pressure electrochemical unit. In principle, the system can compress hydrogen with a compression ratio of 45 from 10 to 450 bar without any external thermal input and recovering the electrochemical unit waste heat to drive the thermal stage.

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Section: Metal Hydride Characterization Resultscontrasting

confidence: 72%

High pressure thermal hydrogen compression employing Ti_1.1CrMn metal hydride material

Corgnale¹,

Sulic²

2019

J. Phys. Energy

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“…The thermodynamic and weight capacity data for the HP2 material have been collected from Reference [18], with the corresponding equilibrium operating T and P estimated using the van 't Hoff equation. Likewise, the HP3 material (Ti 1.1 CrMn) properties have been assessed based on the data available in Reference [19]. The main limit of the HP3 material is the absorption temperature, required to be on the order of 27 • C for 100 bar.…”

Section: Initial Downselected Materialsmentioning

confidence: 99%

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Corgnale¹,

Sulic²

2018

Metals

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Traditional high-pressure mechanical compressors account for over half of the car station's cost, have insufficient reliability, and are not feasible for a large-scale fuel cell market. An alternative technology, employing a two-stage, hybrid system based on electrochemical and metal hydride compression technologies, represents an excellent alternative to conventional compressors. The high-pressure stage, operating at 100-875 bar, is based on a metal hydride thermal system. A techno-economic analysis of the metal hydride system is presented and discussed. A model of the metal hydride system was developed, integrating a lumped parameter mass and energy balance model with an economic model. A novel metal hydride heat exchanger configuration is also presented, based on minichannel heat transfer systems, allowing for effective high-pressure compression. Several metal hydrides were analyzed and screened, demonstrating that one selected material, namely (Ti 0.97 Zr 0.03 ) 1.1 Cr 1.6 Mn 0.4 , is likely the best candidate material to be employed for high-pressure compressors under the specific conditions. System efficiency and costs were assessed based on the properties of currently available materials at industrial levels. Results show that the system can reach pressures on the order of 875 bar with thermal power provided at approximately 150 • C. The system cost is comparable with the current mechanical compressors and can be reduced in several ways as discussed in the paper.

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“…4. The absorbed hydrogen capacity decreases from 1.51 (x ¼ 0) to 1.39 wt% (x ¼ 0.04) and the desorption plateau is much lower than that of TieCreMn-based alloys with a C14-type Laves phase [28]. In the electrochemical system, all electrodes made from the studied alloys need about 40 charge/discharge cycles to reach their maximum discharge capacities ( Fig.…”

Section: Hydrogen Storage Discharge Capacity Cycle Life and High-ramentioning

confidence: 96%

Influence of boron introduction on structure and electrochemical hydrogen storage properties of Ti–V-based alloys

Qiu

Huang

Chu

et al. 2015

Journal of Alloys and Compounds

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Advanced high-pressure metal hydride fabricated via Ti–Cr–Mn alloys for hybrid tank

Cited by 93 publications

References 46 publications

High pressure thermal hydrogen compression employing Ti_1.1CrMn metal hydride material

High pressure thermal hydrogen compression employing Ti_1.1CrMn metal hydride material

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Influence of boron introduction on structure and electrochemical hydrogen storage properties of Ti–V-based alloys

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Advanced high-pressure metal hydride fabricated via Ti–Cr–Mn alloys for hybrid tank

Cited by 93 publications

References 46 publications

High pressure thermal hydrogen compression employing Ti1.1CrMn metal hydride material

High pressure thermal hydrogen compression employing Ti1.1CrMn metal hydride material

Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems

Influence of boron introduction on structure and electrochemical hydrogen storage properties of Ti–V-based alloys

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Product

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High pressure thermal hydrogen compression employing Ti_1.1CrMn metal hydride material

High pressure thermal hydrogen compression employing Ti_1.1CrMn metal hydride material