Various　strategies　have　been　developed　to　mitigate　the　huge　volume　expansion　of　a　silicon-based　anode　during　the　process　of　(de)lithiation　and　accelerate　the　transport　rate　of　the　ions/electrons　for　lithium-ion　batteries　(LIBs).　Here,　we　report　a　one-step　synthetic　route　through　a　low-temperature　eutectic　molten　salt　(LiCl-KCl,　352　degrees　C)　to　fabricate　two-dimensional　(2D)　silicon-carbon　hybrids　(Si@SiOx@MpC),　in　which　the　silicon　nanoparticles　(SiNPs)　with　an　ultrathin　SiOx　layer　are　fully　encapsulated　by　graphene-like　carbon　nanosheets　derived　from　a　low-cost　mesophase　pitch.　The　combination　of　an　amorphous　graphene-like　carbon　conductive　matrix　and　a　SiOx　protective　layer　strongly　promotes　the　electrical　conductivity,　structure　stability,　and　reaction　kinetics　of　the　SiNPs.　Consequently,　the　optimized　SipSiO(x)@MpC-2　anode　delivers　large　reversible　capacity　(1239　mAh　g(-1)　at　1.0　A　g(-1)),　superior　rate　performance　(762　mAh　g(-1)　at　8　A　g(-1)),　and　long　cycle　life　over　600　cycles　(degradation　rate　of　only　0.063%　every　cycle).　When　coupled　with　a　homemade　nano-　LiFePO4　cathode　in　a　full　cell,　it　exhibits　a　promising　energy　density　of　193.5　Wh　kg(-1)　and　decent　cycling　stability　for　200　cycles　at　1C.　The　methodology　driven　by　salt　melt　synthesis　paves　a　low-cost　way　toward　simple　fabrication　and　manipulation　of　silicon-carbon　materials　in　liquid　media.