Metal-organic　frameworks　(MOFs)　materials　are　widely　used　in　the　field　of　battery　materials　because　of　their　highly　controllable　structure　and　tunable　porosity.　However,　the　low　conductivity　of　MOFs　and　the　low　utilization　of　active　sites　due　to　the　stacked　structure　make　them　difficult　to　be　used　as　electrode　materials　directly.　In　this　paper,　carbon　nanofiber　composites　loaded　with　nanoscale　Co-MOF　particles　were　prepared　by　in　situ　growth　of　Co-MOF　on　the　fiber　surface　through　the　gas-solid　reaction　method,　and　the　structural　morphology　and　lithium　battery　properties　of　the　composites　were　analyzed.　The　introduction　of　porous　carbon　fibers　and　the　generation　of　smaller-size　MOFs　have　greatly　improved　the　electrical　conductivity　and　stability　of　the　composites.　When　used　as　the　negative　electrode　of　Li-ion　batteries,　the　Co-MOF/Pcnf　has　a　reversible　capacity　of　1081　mAh/g　after　100　cycles　at　a　current　density　of　0.1　A/g,　and　still　has　a　reversible　capacity　of　623.4　mAh/g　after　1000　cycles　at　a　high　current　density　of　1　A/g.　©　2023　Science　Press.　All　rights　reserved.