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Study on Capacitance of Zn-Based Electrode in Redox Electrolyte System
Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
- 1 Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
- 2 Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
- 3 Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
- 4 Liaoning Provincial Key Laboratory of New Energy Battery, Dalian Jiaotong University, Dalian, China
Journal of Materials Science and Chemical Engineering·Volume 08 (2019)·Pages 35–43·Published 30 December 2019·DOI10.4236/msce.2020.81004
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Abstract
Electrode material is one of the most important factors affecting the performance of supercapacitors, and electrolyte solution is another. In this work, electrochemical properties of hydroxide zinc carbonate composite electrode (HZC) in KOH + K 3 [Fe(CN) 6 ] electrolyte were studied. It was proved that [Fe(CN) 6 ] 3 − in electrolyte participated in electrochemical reactions and promoted electron transfer. The specific capacitance of HZC electrode was as high as 920.5 F · g − 1 at 1.0 A · g − 1 in 1 mol · L − 1 KOH and 0.04 mol · L − 1 K 3 [Fe(CN) 6 ] electrolyte, which is 172.9% higher than that in KOH. The combination of HZC electrode and low alkalinity aqueous electrolyte provided the supercapacitor system with good capacitance performance, safety, and environmentally friendly.
KeywordsHydroxide Zinc CarbonateSupercapacitor[Fe(CN)<sub>6</sub>]<sup>3&#8722</sup>Redox Electrolyte
- Grillo, G., Han, W., Kong, L.B., Liu, M.C., Wang, D., Li, J.J. and Kang, L. (2015) A High Performance Redox-Mediated Electrolyte for Improving Properties of Metal Oxides Based Pseudocapacitive Materials. Electrochimica Acta, 186, 478-485. https://doi.org/10.1016/j.electacta.2015.10.161
- Qu, Q.T., Wang, B., Yang, L.C., Shi, Y., Tian, S. and Wu, Y.P. (2008) Study on Electrochemical Performance of Activated Carbon in Aqueous Li 2 SO 4 , Na 2 SO 4 and K 2 SO 4 Electrolytes. Electrochemistry Communications, 10, 1652-1655. https://doi.org/10.1016/j.elecom.2008.08.020
- Senthilkumar, S.T., Selvan, R.K. and Melo, J.S. (2013) Redox Additive/Active Electrolytes: A Novel Approach to Enhance the Performance of Supercapacitors. Journal of Materials Chemistry A, 1, 12386-12394. https://doi.org/10.1039/c3ta11959a
- Wang, G., Zhang, L. and Zhang, J. (2012) A Review of Electrode Materials for Electrochemical Supercapacitors. Chemical Society Reviews, 41, 797-828. https://doi.org/10.1039/C1CS15060J
- Wang, H., Li, Z., Jin, K.T., Holt, C.M.B. Tan, X., Xu, Z., Amirkhiz, B.S., Harfield, D., Anyia, A. and Stephenson, T. (2013) Supercapacitors Based on Carbons with Tuned Porosity Derived from Paper Pulp Mill Sludge Biowaste. Carbon, 57, 317-328. https://doi.org/10.1016/j.carbon.2013.01.079
- Singh, A., Akhtar, M.A. and Chandra, A. (2017) Trade-off between Capacitance and Cycling at Elevated Temperatures in Redox Additive Aqueous Electrolyte Based High Performance Asymmetric Supercapacitors. Electrochimica Acta, 229, 291-298. https://doi.org/10.1016/j.electacta.2017.01.167
- Mai, L.Q., Minhas-Khan, A., Tian, X., Hercule, K.M., Zhao, Y.L., Lin, X. and Xu, X. (2013) Synergistic Interaction between Redox-Active Electrolyte and Binder-Free Functionalized Carbon for Ultrahigh Supercapacitor Performance. Nature Communications, 4, 2923. https://doi.org/10.1038/ncomms3923
- Senthilkumar, S.T., Selvan, R.K., Lee, Y.S. and Melo, J.S. (2013) Electric Double Layer Capacitor and Its Improved Specific Capacitance Using Redox Additive Electrolyte. Journal of Materials Chemistry A, 1, 1086-1095. https://pubs.rsc.org/en/content/articlelanding/2013/ta/c2ta00210h/unauth#!divAbstract https://doi.org/10.1039/C2TA00210H
- Zhao, Y., Yang, Y.B. and Ren, R.M. (2019) High Performance Hydroxide Zinc Carbonate Composite for Supercapacitors. Journal of Materials Science and Chemical Engineering, 7, 54-60. https://doi.org/10.4236/msce.2019.711006
- Liu, X., Yang, Y., Xing, X., Zou, T., Wang, Z. and Wang, Y. (2017) From Water and Ni Foam to a Ni(OH)2 @Ni Foam Binder-Free Supercapacitor Electrode: A Green Corrosion Route. ChemElectroChem, 5, 434-444. https://doi.org/10.1002/celc.201701094