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  "notes": "Fact card format for a specific production technology within the hydrogen value chain.",
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      "text": "Diagram of photolytic cell layers (AllnPOx, AllnP, GaAs, GalnAs, GalnP, Rh, RuOx, TiO2)",
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      "text": "Low lifetime of materials; Need to protect the semiconductor from water",
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      "text": "Anode: C2H4O2 + 2 H2O -> 2 CO2 + 8 H+ + 8 e- \nCathode: 8 H+ + 8 e- -> 4 H2\nOverall: C2H4O2 + 2 H2O -> 2 CO2 + 4 H2",
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      "text": "Can be developed in thin films; Able to operate at low temperatures; One-step process; Efficiency rapidly increasing",
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      "text": "Efficiency: 23%",
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      "text": "Microorganisms are attached to the anode and bacteria consume acetic acid to release e- and protons combining into H+ and CO2. A power source provides additional energy (~0.2 V to 0.8 V), below typical water electrolysis technologies (1.23 V – 1.8 V).",
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      "text": "Sources: Afhypac, ACS Energy; Kearney Energy Transition institute analysis",
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      "text": "Photolytic technologies directly converts sun energy into hydrogen",
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