Porouscarbon　with　a　large　specific　surface　area　(SSA)　and　highporosity　is　the　optimal　electrode　material　for　supercapacitors.　However,traditional　KOH　activation　continues　to　face　obstacles,　such　as　lowyield,　high　corrosion,　and　environmental　contamination.　In　this　study,nitrogen-doped　(1.68%　N　content)　porous　carbon　(C-PKAC(1.5))　with　high　yield　(26.3%),　large　SSA　(2820.65　m(2)　g(-1)),　and　uniform　size　was　prepared　from　p-phenylenediamine　(PDA)　using　potassium　acetate　(KAc)　instead　ofpotassium　hydroxide　(KOH).　Throughout　the　procedure,　KAc　played　thefollowing　crucial　roles:　(1)　KAc　and　PDA　could　form　a　network　of　hydrogenbonds　and　mix　homogeneously,　with　PDA　providing　a　nitrogen　dopantand　carbon　source.　(2)　Following　polymerization,　the　KAc　reconstitutedinto　lamellae　and　attained　geometric　partition　of　the　polymer　matrix,left　diffusion　microtunnels,　and　provided　a　homogenized　particle　sizeof　carbon　in　the　subsequent　stage.　(3)　During　activation,　KAc　meltsand　diffuses　into　the　polymer　matrix　via　microtunnels,　where　it　isconverted　to　K2CO3　to　activate　from　inside　tooutside,　thereby　averting　the　low　yield　associated　with　conventionalactivation　from　outside　to　inside.　The　supercapacitor　assembled　forC-PKAC(1.5)　has　a　high　specific　capacitance　of　25.17　F　g(-1),　a　capacitance　retention　rate　of　82.77%　after　30,000cycles,　and　an　energy　density　of　8.29　W　h　L-1　ata　power　density　of　199.25　W　L-1.