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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
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A Dual Carbon-Based Potassium Dual Ion Battery with Robust Comprehensive Performance
Jiaojiao Zhu1, Yali Li1, Bingjun Yang2
1Key Laboratory of Special Function Materials & Structure Design of the Ministry of Education, and School of Physical Science & Technology, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 5, 2018
Summary
Researchers developed advanced dual carbon-based potassium dual ion batteries (K-DCBs) using KS6 and natural graphite. These K-DCBs offer high capacity, excellent cycling stability, and improved energy density for practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Dual carbon-based potassium dual ion batteries (K-DCBs) show promise for energy storage due to their cost-effectiveness, safety, and eco-friendliness.
- Current K-DCBs face limitations in achieving high capacity, long-term stability, and affordability simultaneously for widespread adoption.
Purpose of the Study:
- To develop a high-performance K-DCB that meets practical application requirements.
- To optimize cathode and anode materials for enhanced electrochemical properties.
Main Methods:
- Utilized KS6 as the cathode material and natural graphite as the anode material.
- Investigated the electrochemical performance, including capacity, cycling stability, discharge voltage, and energy density.
- Analyzed the working mechanism of the developed K-DCB.
Main Results:
- Achieved an initial capacity of approximately 54.6 mAh g-1.
- Demonstrated 92.5% capacity retention over 400 cycles within a 2.4–5.4 V voltage window at 100 mA g-1.
- Reported a medium discharge voltage of around 4.2 V and an energy density up to 158.3 Wh kg-1.
Conclusions:
- The developed K-DCB with KS6 and natural graphite exhibits superior comprehensive performance.
- This study provides valuable insights for improving K-DCB electrochemical performance towards practical applications.
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