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We report protonation in several compounds by an ionic-liquid-gating method,under optimized gating conditions.This leads to single superconducting phases for several compounds.Non-volatility of protons allows post-gating magnetization and transport measurements.The superconducting transition temperature Tc is enhanced to 43.5K for FeSe0.93S0.07,and 41 K for FeSe after protonation.Superconducting transitions with Tc ～ 15 K for ZrNCl,～7.2 K for 1T-TaS2,and ～3.8 K for Bi2Se3 are induced after protonation.Electric transport in protonated FeSe0.93S0.07 confirms high-temperature superconductivity.Our 1 H nuclear magnetic resonance (NMR) measurements on protonated FeSe1-xSx reveal enhanced spin-lattice relaxation rate 1/1T1 with increasing x,which is consistent with the LDA calculations that H+ is located in the interstitial sites close to the anions.