Silicon　(Si)　is　regarded　as　the　most　attractive　anode　for　high-performance　lithium-ion　batteries　due　to　its　high　theoretical　specific　capacity.　Unfortunately,　Si　experiences　significant　volume　changes,　leading　to　severe　capacity　fading　and　poor　cycling　stability.　Here,　novel　hierarchical　void　structured　Si/PANi/C　microspheres　are　designed　and　synthesized　to　tackle　these　problems.　In　this　architecture,　silicon　nanoparticles　(SiNPs)　with　conductive　polymer　conformal　coating　are　homogeneously　dispersed　in　a　three-dimensional　porous　polymer　framework　which　is　partially　carbonized.　The　void　space　in　highly　porous　matrix　is　not　only　capable　of　accommodating　volume　expansion　but　also　favorable　for　liquid　electrolyte　penetration,　enabling　extremely　stable　cycling　performance　and　superior　rate　capability,　along　with　high　areal　mass　loading.　The　outside　carbon　layer　containing　nitrogen　may　help　attain　a　stable　solid　electrolyte　interphase　(SEI)　film.　The　resultant　Si/PANi/C　anode　reaches　the　reversible　charge　capacity　of　1470　mAh　g(-1)　at　100　mA　g(-1)　and　the　average　capacity　loss　after　200　cycles　is　only　0.04%　per　cycle.　Moreover,　Si/PANi/C　anode　exhibits　excellent　rate　performance　of　similar　to　790　mAh　g(-1)　even　at　1　A　g(-1)　and　its　Coulombic　efficiency　increases　to　99%　after　only　3　cycles.　Remarkably,　the　reversible　areal　capacity　is　high　with　a　value　of　2.74　mAh　cm(-2)　at　a　high　mass　loading　of　similar　to　1.9　mg　cm(-2).　(C)　2019　Elsevier　Ltd.　All　rights　reserved.