Ocean　wave　energy　represents　an　essential　source　of　green,　low-cost,　and　renewable　clean　energy.　Triboelectric　nanogenerator　(TENG)　technology　has　demonstrated　its　potential　for　use　in　ocean　wave　energy　harvesting.　However,　most　TENG　designs　face　challenges　that　include　complex　energy　management　and　storage　requirements,　along　with　TENG　output　performance　degradation　at　low　ocean　frequencies.　Here,　we　present　a　pulsed　arch-shaped　double-layered　direct-current　TENG　(aDC-TENG)　that　captures　low-frequency　ocean　wave　energy　efficiently.　Because　of　its　arched　structure,　the　system　reduces　operational　resistance　and　converts　ultralow　vibrations　from　ocean　waves　at　frequencies　as　low　as　0.1　Hz　into　electrical　energy.　By　using　the　electrostatic　breakdown　that　is　designed　to　occur　between　synergistically　distributed　electrodes,　a　unidirectional　current　loop　is　formed　that　generates　unidirectional　peak　pulse　currents　as　high　as　23.5　mu　A　at　0.1　Hz.　The　integrated　aDCTENG　array,　which　is　placed　on　the　bottom　of　the　buoy　alongside　small　spheres,　achieves　automatic　contact　and　separation　through　the　coupled　motion　of　the　spheres　and　the　ocean　waves,　thus　enabling　omni-directional　harvesting　of　the　energy　from　the　ocean　waves.　The　aDC-TENG　was　operated　successfully　in　Sanya　Bay　and　demonstrated　remarkable　environmental　adaptability.　Our　research　results　have　opened　up　a　path　toward　the　development　of　more　efficient　and　convenient　techniques　for　collection　of　the　ocean　wave　energy　required　to　drive　a　variety　of　sensors　and　other　electronic　devices.