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. 2015 Nov 16;5:16618. doi: 10.1038/srep16618

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(a) Enlargement of the voltage window evaluated by CD at 0.2 A g⁻¹, (b) long-term stability at different cell voltages in the 1.1–1.7 V range evaluated by charge-discharge at a constant current of 5 A g⁻¹ and (c) ESR resistance variation ratio (R_n/R₁ × 100, where R_n is the resistance at the n^th cycle and R₁ at the 1^st cycle) at different cell voltages in the 1.1–1.7 V range evaluated by charge-discharge at a constant current of 5 A g⁻¹ for the microporous materials in 1 M Li₂SO₄ electrolyte.