N-Doped Graphene Nanofibers with Porous Channel Comprising Fe<math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <msub> <mrow /> <mrow> <mi>x</mi> </mrow> </msub> </math>S<math xmlns="http://www.w3.org/1998/Math/MathML" id="M2"> <msub> <mrow /> <mrow> <mi>y</mi> </mrow> </msub> </math> Nanocrystals and Intertwined N-Doped CNTs as Efficient Interlayers for Li-S Batteries
International journal of energy research