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Proton Storage in Metallic H1.75MoO3 Nanobelts through the Grotthuss Mechanism

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.2c03844· OSTI ID:1967430
 [1];  [2];  [3];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [10];  [9];  [10];  [11]
  1. China Three Gorges University, Yichang (China)
  2. Shanghai University (China); Wuhan Univ. of Technology (China)
  3. Wuhan Univ. of Technology (China)
  4. Wenzhou University (China)
  5. Wenzhou University (China); Argonne National Lab. (ANL), Lemont, IL (United States)
  6. Ecole Polytechnique Federale Lausanne (EPFL) (Switzerland)
  7. Argonne National Lab. (ANL), Lemont, IL (United States)
  8. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  9. Helmholtz Centre Berlin for Materials and Energy (Germany)
  10. Shanghai University (China)
  11. Argonne National Lab. (ANL), Lemont, IL (United States); Zhejiang Univ., Hangzhou (China)
+ Show Author Affiliations
The proton, as the cationic form of the lightest element-H, is regarded as most ideal charge carrier in "rocking chair " batteries. However, current research on proton batteries is still at its infancy, and they usually deliver low capacity and suffer from severe acidic corrosion. In this work, electrochemically activated metallic H1.75MoO3 nanobelts are developed as a stable electrode for proton storage. The electrochemically pre-intercalated protons not only bond directly with the terminal O3 site via strong O-H bonds but also interact with the oxygens within the adjacent layers through hydrogen bonding, forming a hydrogen-bonding network in H1.75MoO3 nanobelts and enabling a diffusion-free Grotthuss mechanism as a result of its ultralow activation energy of ~0.02 eV. To the best of our knowledge, this is the first reported inorganic electrode exhibiting Grotthuss mechanism-based proton storage. Additionally, the proton intercalation into MoO3 with formation of H1.75MoO3 induces strong Jahn-Teller electron-phonon coupling, rendering a metallic state. As a consequence, the H1.75MoO3 shows an outstanding fast charging performance and maintains a capacity of 111 mAh/g at 2500 C, largely outperforming the state-of-art battery electrodes. More importantly, a symmetric proton ion full cell based on H1.75MoO3 was assembled and delivered an energy density of 14.7 Wh/kg at an ultrahigh power density of 12.7 kW/kg, which outperforms those of fast charging supercapacitors and lead-acid batteries.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
China Baowu Steel Group Corp. Ltd; Iron and Steel Joint Research Fund; National Natural Science Foundation of China (NSFC); Science and Technology Commission of Shanghai Municipality; Shanghai Institutions of Higher Learning; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1967430
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 38 Vol. 144; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

25 ENERGY STORAGE
Batteries
Electrodes
Intercalation
Layers
Nanobelts