Xu Yunkai, Wu Xianyong, Jiang Heng, Tang Longteng, Koga Kenneth Y, Fang Chong, Lu Jun, Ji Xiulei
Department of Chemistry, Oregon State University, Corvallis, OR, 97331-4003, USA.
Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA.
Angew Chem Int Ed Engl. 2020 Dec 1;59(49):22007-22011. doi: 10.1002/anie.202010554. Epub 2020 Sep 23.
A non-aqueous proton electrolyte is devised by dissolving H PO into acetonitrile. The electrolyte exhibits unique vibrational signatures from stimulated Raman spectroscopy. Such an electrolyte exhibits unique characteristics compared to aqueous acidic electrolytes: 1) higher (de)protonation potential for a lower desolvation energy of protons, 2) better cycling stability by dissolution suppression, and 3) higher Coulombic efficiency owing to the lack of oxygen evolution reaction. Two non-aqueous proton full cells exhibit better cycling stability, higher Coulombic efficiency, and less self-discharge compared to the aqueous counterpart.
通过将H₃PO₄溶解在乙腈中设计出一种非水电解质。该电解质通过受激拉曼光谱表现出独特的振动特征。与水性酸性电解质相比，这种电解质具有独特的特性：1）由于质子的去溶剂化能较低，（去）质子化电位较高；2）通过抑制溶解具有更好的循环稳定性；3）由于没有析氧反应，库仑效率更高。与水性全电池相比，两个非水电质子全电池表现出更好的循环稳定性、更高的库仑效率和更低的自放电。
