Understanding the supercapacitor properties of electrospun carbon ...
WEBJun 1, 2019 · XRD patterns of PRB raw coal and coal chars derived from ILs extraction are presented in Fig. 1 A. The minerals containing calcium (Ca) and iron (Fe) were found to be solvated by ILs, while some silicon (Si) and magnesium (Mg) remained in the coal chars. Coal chars showed the higher intensity of wide diffraction peak of amorphous carbon at .