Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 41(9), p. 23459-23466, 2021
DOI: 10.1039/d1ta06716h
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The lattice collapse occurs in MnO2 birnessite at high voltage due to the structural water motion, which is exempted in Ni-doped MnO2 due to a significant decrease in electrostatic repulsion between lattice oxygens.