Perspectives on Working Voltage of Aqueous Supercapacitors

Aqueous supercapacitors have the superiorities of high safety, environmental friendliness, inexpensive, etc. High energy density supercapacitors are not conducive to manufacturing due to the limitation of water thermodynamic decomposition potential, resulting in a narrow working voltage window. To address such challenges, a great endeavor has started to investigate high voltage aqueous supercapacitors as well as making some progress. This review summarizes key strategies regarding the realization of wide working voltage of aqueous supercapacitors and analyzes the involved mechanism, including the optimization of electrodes, electrolytes, diaphragms, and supercapacitor structures. From the perspective of…

• NN
  National Natural Science Foundation of China

  Awards: 52072295, 51972260
• HE
  Higher Education Discipline Innovation Project

  Award: B14040
• FR
  Fundamental Research Funds for the Central Universities

  Award: xzy022020046