通过用Ca~(2+)改性海藻酸钠(SA)和用戊二醛改性壳聚糖(CS)制备Ni-mSA-mCS(m:modified)双极膜.镍网预先埋在mSA膜表面作为阴极,不仅增强了膜的机械性能,而且降低阴极电解液的IR降,实现零极距.测定了膜的红外光谱、电镜扫描、机械性能.将Ni-mSA-mCS双极膜应用于电还原制备巯基乙酸(TGA).实验结果表明,电流密度为10 mA·cm~(-2),常温电解,电流效率可达66.7%.与传统的Zn还原法相比,不仅省去了昂贵的金属还原剂的消耗,而且消除了锌泥对环境的污染. A Ni-mSA-mCS (m: modified) bipolar membrane was prepared by Ca (2+) modified sodium alginate (SA) and glutaraldehyde modified chitosan (CS) The membrane surface as the cathode not only enhanced the mechanical properties of the membrane, but also reduced the IR drop of the catholyte and achieved zero-pole distance.The infrared spectra, scanning electron microscopy and mechanical properties of the membrane were measured.The Ni-mSA-mCS bipolar membrane The results showed that the current density was 10 mA · cm ~ (-2) and the electrolysis efficiency was 66.7% at room temperature.Compared with the traditional Zn reduction method, it not only saves the expensive Of metal reductant consumption, but also eliminates the pollution of zinc mud on the environment.