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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Graphdiyne Oxide-Enabled Solid-State Proton Battery Exhibiting Superior Rate Capability.

Yang Huang1,2, Zecheng Xiong1,2, Hongye Liu1,2

  • 1Beijing National Laboratory for Molecular Sciences, CAS Research/Education Centre for Excellence in Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences, Beijing, China.

Angewandte Chemie (International Ed. in English)
|June 20, 2026
PubMed
Summary
This summary is machine-generated.

Graphdiyne oxide (GDYO) and phosphoric acid form a novel solid-state electrolyte for proton batteries. This GDYO@H3PO4 material enables high conductivity and stability, advancing next-generation energy storage solutions.

Keywords:
graphdiyne oxidehydrogen bonding networkssolid‐state electrolytesolid‐state proton battery

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Proton batteries offer high safety, power density, and stability for energy storage.
  • Developing solid-state electrolytes with high proton conductivity is a key challenge.

Purpose of the Study:

  • To introduce graphdiyne oxide (GDYO) as a novel solid-state electrolyte for proton batteries.
  • To enhance proton conductivity in solid-state electrolytes using a GDYO and phosphoric acid composite.

Main Methods:

  • Fabrication of a graphdiyne oxide and phosphoric acid composite (GDYO@H3PO4).
  • Characterization using Fourier-transform infrared (FTIR) and solid-state fluorescence spectroscopy.
  • Assembly and testing of a hydrous vanadium hexacyanoferrate//MoO3 (VHCF//MoO3) full solid-state proton battery.

Main Results:

  • The GDYO@H3PO4 electrolyte exhibits an interconnected hydrogen bonding network, facilitating proton transport.
  • The assembled proton battery shows excellent rate capability, retaining 53.6% capacity at 50C.
  • Remarkable cycling stability was achieved: 102.2 mAh g⁻¹ capacity with 90.2% retention after 4500 cycles.

Conclusions:

  • GDYO@H3PO4 is a promising solid-state electrolyte for high-performance proton batteries.
  • This approach offers a new strategy for developing stable and efficient solid-state batteries.
  • GDYO shows potential as a platform for designing advanced electrocatalysts in solid-state batteries.