Clean hydrogen production with the Cu–Cl cycle – Progress of international consortium, II: Simulations, thermochemical data and materials

Naterer, G.F.; Suppiah, S.; Stolberg, L.; Lewis, Michele A.; Ferrandon, Magali; Wang, Z.; Dinçer, İbrahim; Gabriel, Kamiel; Rosen, Marc A.; Secnik, E.; Easton, E. Bradley; Trevani, Liliana; Pioro, Igor; Tremaine, Peter R.; Lvov, Serguei N.; Jiang, Jin; Rizvi, Ghaus; Ikeda, B.M.; Lu, Lixuan; Kaye, M.H.; Smith, William R.; Mostaghimi, J.; Spekkens, P.; Fowler, Michael; Avsec, Jurij

doi:10.1016/j.ijhydene.2011.08.013

Cited by 52 publications

(24 citation statements)

References 28 publications

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“…approximately before 1990, a peak in thermal conductivity was not taken into account. Later, this peak was well established 11.7(f)) and included into thermophysical data and software. The peak in thermal conductivity diminishes at about 25.5 MPa for water ( Figure 11.6(f); Table 11.3) and at about 8.4 MPa for carbon dioxide ( Figure 11.7(f)).…”

Section: Thermophysical Properties At Critical and Supercritical Presmentioning

confidence: 98%

Application of Supercritical Pressure in Power Engineering

Pioro

2014

Supercritical Fluid Technology for Energy and Environmental Applications

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Section: Thermophysical Properties At Critical and Supercritical Presmentioning

confidence: 98%

Application of Supercritical Pressure in Power Engineering

Pioro

2014

Supercritical Fluid Technology for Energy and Environmental Applications

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“…Depending on the present ion species in the anolyte, the dominating anode half‐reaction varies. For a solution of 0.5 mol L −1 of CuCl(aq) and 6 mol L −1 of HCl(aq), for instance, the following reaction is reported as the dominating anode half‐reaction:

{CuCl}_{4}^{3 -} ((), aq) \to {CuCl}^{+} ((), aq) + 3 {Cl}^{-} ((), aq) + e^{-} .

…”

Section: Cucl/hcl Electrolysismentioning

confidence: 99%

Kinetic and electrochemical analyses of a CuCI/HCl electrolyzer

2019

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Summary An electrochemical analysis is carried out from a kinetic electrochemistry perspective of a CuCl/HCl electrolysis cell, within the CuCl thermochemical water splitting process for hydrogen production. The anolyte is a solution of 2 mol L−1 CuCl(aq) and 10 mol L−1 HCl(aq) while the catholyte solution is 11 mol L−1 HCl(aq). The cell current density of 0.5 A cm−2 and voltage of 0.7 V are the desired working conditions for a CuCl/HCl electrolyzer. The current density of 0.5 A cm−2 is assumed to occur at a 5% anolyte conversion degree. At 25°C, the activation overpotential of the anode half‐reaction is found to be 53 mV for a current density of 0.5 A cm−2 while the activation overpotential of the cathode half‐reaction for the same condition is 87 mV. An increase in working temperature decreases the overpotential of the anode half‐reaction and increases the cathode half‐reaction activation overpotential. The ohmic overpotential of the cell membrane is almost 1000 times smaller than that of the activation overpotentials of the electrode half‐reactions for the same temperature and current density. A higher working temperature results in a lower membrane ohmic overpotential. The required voltage to trigger electrolysis for a current density of 0.5 A cm−2 is found to be 0.53 V at 25°C and 0.59 V at 80°C and a higher temperature results in a higher electrochemical efficiency. The cell electrochemical efficiency increases linearly with working temperature while the voltage efficiency peaks at 75% at 60°C.

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“…Various design configurations and performance capabilities have been presented by Wang et al [6,7]. Coupled with nuclear, solar or industrial heat sources, the CueCl cycle can utilize waste heat [8]. As illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Effectively minimizing the incoming steam requirement and maximizing the solid conversion rate are important to effectively integrate the hydrolysis reactor into the CueCl cycle [8]. Supplying high purity reactants to the downstream hydrogen and oxygen production reactors, without excess auxiliary processes, is necessary for cost-effective hydrogen production.…”

Section: Introductionmentioning

confidence: 99%