@article{He2026, 
author = {Haichuan He and Jiarui Su and Lei Liu and Liu Deng and You-Nian Liu and Zhengxin Zhu},
title = {Vanadium hexacyanoferrate as high-performance proton cathode for aqueous hydrogen gas-proton battery},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {2},
pages = {94908014},
keywords = {long life, high rate, Prussian blue analogue, aqueous proton battery, hydrogen gas-proton battery},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94908014},
doi = {10.26599/NR.2025.94908014},
abstract = {Hydrogen gas-proton batteries (HPBs), utilizing protons as the charge carrier driven by the hydrogen gas anode, demonstrate exceptional rate capability and superior cycling stability in full-cell configurations, and are considered as ideal aqueous proton batteries (APBs) for next-generation energy storage. However, the HPBs still exhibit deficiencies in discharge voltage and specific capacity. Herein, a promising proton cathode, vanadium hexacyanoferrate (VHCF), is developed as a new choice for HPB. Benefiting from the open-framework structure and two redox-active sites (vanadium and iron) of VHCF cathode, the HPB delivers a high specific capacity of 117.8 mAh·g−1 and a discharge voltage of 1.06 V. At room temperature, superior rate capability (48% of the initial capacity at 3000 C) and stable cycling for 600,000 cycles (with 60% capacity retention) are demonstrated, which is the highest value reported for APBs to date. The excellent rate and cycling stability can be maintained at high mass loadings of 25 mg·cm−2 and low-temperature surroundings (−40 °C). This work is anticipated to motivate the exploration of additional APBs and accelerate advancements in energy storage technology.}
}