P(ANI-co-PY) and P(ANI-co-PY)-MoO₄²⁻ copolymer coatings with different molar ratios of aniline (ANI) and pyrrole (PY) monomers are electrosynthesized on the surface of a 304 stainless steel (304SS) in 1-butylsulfonic acid-3-methylimidazolium hydrogensulfate (BAMH) ionic liquid solution using cyclic voltammetry (CV) technique. P(ANI-co-PY) and P(ANI-co-PY)-MoO₄²⁻ copolymer coatings possess better surface compactness and thermostability than the pure PANI and PPY coatings. ¹H NMR studies and UV–vis tests confirm the successful copolymerization of the P(ANI-co-PY) polymer. The corrosion behaviors of the bare 304SS and PANI, PPY, P(ANI-co-PY), and P(ANI-co-PY)-MoO₄²⁻ coated 304SS are evaluated in a 0.1 M HCl solution via electrochemical methods. The charge transfer resistance (R_ct) is obtained by performing equivalent circuit fitting, and it is shown that the R_ct of P(50ANI-co-50PY)-MoO₄²⁻ copolymer coating is 10 times larger than that of the pure PANI and PPY coatings after being immersed in 0.1 M HCl for 240 h. A maximum corrosion protection efficiency of 99.3% is attained for P(50ANI-co-50PY)-MoO₄²⁻ copolymer coating, which indicates its superior corrosion protection ability. The excellent anti-corrosion performance can be attributed to (1) the physical barrier of the copolymer coatings, (2) anodic protection of the conductive polymers, and (3) the effective adsorption of BAMH onto the surface of 304SS.

在304不锈钢的表面上电合成具有不同摩尔比的苯胺（ANI）和吡咯（PY）单体的P（ANI-co-PY）和P（ANI-co-PY）-MoO ₄ ^2-共聚物涂层（使用循环伏安（CV）技术在1-丁基磺酸-3-甲基咪唑硫酸氢盐（BAMH）离子液体溶液中加入304SS）。P（ANI-co-PY）和P（ANI-co-PY）-MoO ₄ ^2-共聚物涂层比纯PANI和PPY涂层具有更好的表面致密性和热稳定性。¹ H NMR研究和UV-vis测试证实了P（ANI-co-PY）聚合物的成功共聚。裸304SS和PAN​​I，PPY，P（ANI-co-PY）和P（ANI-co-PY）-MoO ₄ ^2-的腐蚀行为通过电化学方法在0.1 M HCl溶液中评估涂层的304SS 。通过进行等效电路拟合获得电荷转移电阻（R _ct），结果表明P（50ANI-co-50PY）-MoO ₄ ^2-共聚物涂层的R _ct是纯PANI的10倍。将PPY和PPY涂料浸入0.1 M HCl中240小时。P（50ANI-co-50PY）-MoO ₄ ^2-的最大腐蚀防护效率达到99.3％共聚物涂层，这表明它具有优异的防腐蚀能力。优异的抗腐蚀性能可归因于（1）共聚物涂层的物理屏障，（2）导电聚合物的阳极保护以及（3）BAMH在304SS表面上的有效吸附。