fig16

A review of the preparation and characterization techniques for closed pores in hard carbon and their functions in sodium-ion batteries

Figure 16. (A) (i) The discharge-charge curve for HC-1300 electrode. (ii) 23Na MAS NMR of HC-1300. (iii) The EPR spectra of the HC-1300 electrode at different discharge states between -0.03 and 2.0 V[31] (Copyright 2017, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim). Ex situ23Na MAS NMR spectra of (B) Glu and (C) Mg-Glu at different discharge states[27] (Copyright 2022, Wiley-VCH GmbH).

Energy Materials
ISSN 2770-5900 (Online)
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