Structural regulation of vanadium oxide by poly(3,4-ethylenedioxithiophene) intercalation for ammonium-ion supercapacitors

• DOI: 10.1016/j.asems.2022.100013
• Publication Date: 2022-05-25T08:17:45Z
• Authors: Xingyu Chen; Peng Wang; Ziying Feng; Yanyan Liu; Miao Cui; Changgong Meng; Yifu Zhang
• Keywords: Vanadium oxide hydration; Supercapacitor; TK1001-1841; Chemical technology; TJ807-830; TP1-1185; 02 engineering and technology; Renewable energy sources; NH4+ storage; Production of electric energy or power. Powerplants. Central stations; Polymer intercalation; Inorganic-polymer hybrid; 0210 nano-technology

Recently, ammonium-ion (NH4+) storage is in a booming stage aqueous energy systems due to its multitudinous merits. To seek suitable electrode materials with excellent NH4+-storage still the exploratory and full of challenge. Herein, an inorganic-polymer hybrid, poly(3,4-ethylenedioxithiophene) (PEDOT) intercalated hydrated vanadium oxide (VOH), named as VOH/PEDOT, developed tune structure VOH for boosting NH4+ storage. By intercalation PEDOT, interlayer space increased from 11.5 Å 14.2 Å, which notably facilitates rapid transport electrons charges between layers improves electrochemical properties The achieved performances are much better than progressive hosting materials. In addition, concentration polyvinyl alcohol/ammonium chloride (PVA/NH4Cl) electrolyte exerts great impact on VOH/PEDOT. VOH/PEDOT delivers specific capacitance 327 F g−1 1 M PVA/NH4Cl at −0.2–1 V. Furthermore, quasi-solid-state VOH/PEDOT//active carbon hybrid supercapacitor (QSS VOH/PEDOT//AC HSC) device assembled storage, it exhibits 328 mF cm−2 mA cm−2. density QSS NH4+-HSC can reach 2.9 Wh m−2 (2.6 mWh cm−3, 10.4 kg−1) W (0.9 35.7 kg−1). This work not only proves that PEDOT boost capacity oxides, but also provides novel direction development