Fiber-shaped　electrochemical　capacitors　(FSECs)　have　garnered　substantial　attention　to　emerging　portable,　flexible,　and　wearable　electronic　devices.　However,　achieving　high　electronic　and　ionic　conductivity　in　fiber　electrodes　while　maintaining　a　large　specific　surface　area　is　still　a　challenge　for　enhancing　the　capacitance　and　rapid　response　of　FSECs.　Here,　we　present　an　electric-field-assisted　cold-wall　plasma-enhanced　chemical　vapor　(EFCW-PECVD)　method　for　direct　growth　of　vertical　graphene　(VG)　on　fiber　electrodes,　which　is　incorporated　in　the　FSECs.　The　customized　reactor　mainly　consists　of　two　radio　frequency　coils:　one　for　plasma　generation　and　the　other　for　substrate　heating.　Precise　temperature　control　can　be　achieved　by　adjusting　the　conductive　plates　and　the　applied　power.　With　induction　heating,　only　the　substrate　is　heated　to　above　500　°C　within　just　5　min,　maintaining　a　low　temperature　in　the　gas　phase　for　the　growth　of　VG　with　a　high　quality.　Using　this　method,　VG　was　easily　grown　on　metallic　fibers.　The　VG-coated　titanium　fibers　for　FSECs　exhibit　an　ultrahigh　rate　performance　and　quick　ion　transport,　enabling　the　conversion　of　an　alternating　current　signal　to　a　direct　current　signal　and　demonstrating　outstanding　filtering　capabilities.　©　2024　American　Chemical　Society.