Solid-Liquid-Gas Management for Low-Cost Hydrogen Gas Batteries
Aqueous nickel-hydrogen gas (Ni-H2) batteries with excellent durability (>10,000 cycles) are important candidates for grid-scale energy storage but are hampered by the high-cost Pt electrode with limited performance. Herein, we report a low-cost nickel-molybdenum (NiMo) alloy as an efficient bifunctional hydrogen evolution and oxidation reaction (HER/HOR) catalyst for Ni-H2 batteries in alkaline electrolytes. The NiMo alloy demonstrates a high HOR mass-specific kinetic current of 28.8 mA mg-1 at 50 mV as well as a low HER overpotential of 45 mV at a current density of 10 mA cm-2, which is better than most nonprecious metal catalysts. Furthermore, we apply a solid-liquid-gas management strategy to constitute a conductive, hydrophobic network of NiMo using multiwalled carbon nanotubes (NiMo-hydrophobic MWCNT) in the electrode to accelerate HER/HOR activities for much improved Ni-H2 battery performance. As a result, Ni-H2 cells based on the NiMo-hydrophobic MWCNT electrode show a high energy density of 118 Wh kg-1 and a low cost of only 67.5 $ kWh-1. With the low cost, high energy density, excellent durability, and improved energy efficiency, the Ni-H2 cells show great potential for practical grid-scale energy storage.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:17 |
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| Enthalten in: |
ACS nano - 17(2023), 8 vom: 25. Apr., Seite 7821-7829 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Jiang, Taoli [VerfasserIn] |
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| Links: |
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| Themen: |
HER/HOR catalysis |
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| Anmerkungen: |
Date Completed 25.04.2023 Date Revised 25.04.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsnano.3c00798 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM355266660 |
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| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Aqueous nickel-hydrogen gas (Ni-H2) batteries with excellent durability (>10,000 cycles) are important candidates for grid-scale energy storage but are hampered by the high-cost Pt electrode with limited performance. Herein, we report a low-cost nickel-molybdenum (NiMo) alloy as an efficient bifunctional hydrogen evolution and oxidation reaction (HER/HOR) catalyst for Ni-H2 batteries in alkaline electrolytes. The NiMo alloy demonstrates a high HOR mass-specific kinetic current of 28.8 mA mg-1 at 50 mV as well as a low HER overpotential of 45 mV at a current density of 10 mA cm-2, which is better than most nonprecious metal catalysts. Furthermore, we apply a solid-liquid-gas management strategy to constitute a conductive, hydrophobic network of NiMo using multiwalled carbon nanotubes (NiMo-hydrophobic MWCNT) in the electrode to accelerate HER/HOR activities for much improved Ni-H2 battery performance. As a result, Ni-H2 cells based on the NiMo-hydrophobic MWCNT electrode show a high energy density of 118 Wh kg-1 and a low cost of only 67.5 $ kWh-1. With the low cost, high energy density, excellent durability, and improved energy efficiency, the Ni-H2 cells show great potential for practical grid-scale energy storage | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a HER/HOR catalysis | |
| 650 | 4 | |a hydrogen gas batteries | |
| 650 | 4 | |a large-scale energy storage | |
| 650 | 4 | |a low-cost hydrogen catalysts | |
| 650 | 4 | |a solid−liquid−gas management | |
| 700 | 1 | |a Wei, Shuyang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Linxiang |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, Kai |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, Xinhua |e verfasserin |4 aut | |
| 700 | 1 | |a Park, Sunhyeong |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Shuang |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Zhengxin |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Zaichun |e verfasserin |4 aut | |
| 700 | 1 | |a Meng, Yahan |e verfasserin |4 aut | |
| 700 | 1 | |a Peng, Qia |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Yuancheng |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Wei |e verfasserin |4 aut | |
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