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Published on: September 29, 2020
Wood-Derived Continuously Oriented Three-Phase Interfacial Channels for High-Performance Quasi-Solid-State Alkaline
Lanze Li1, Qinghe Cao2, Yitian Wu1
1College of Chemistry and Materials Engineering, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, National Engineering and Technology Research Center of Wood-based Resources Comprehensive Utilization, and Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China.
Researchers developed a novel wood-derived cathode for hybrid zinc batteries, enhancing performance through oriented three-phase interfacial channels. This innovation significantly boosts capacity and energy density for advanced energy storage solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Hybrid zinc (Zn) batteries combine alkaline Zn and Zn-air battery benefits.
- Performance is often limited by inefficient interfacial transfer channels for electrocatalytic reactions and electrolyte mass transfer.
Purpose of the Study:
- To develop a novel cathode structure for hybrid Zn batteries to overcome performance limitations.
- To improve the kinetics of electrocatalytic oxygen reactions and electrolyte mass transfer.
Main Methods:
- Utilized natural pine wood structure for creating continuously oriented three-phase interfacial channels.
- Carbonized pine wood chips and asymmetrically loaded them with hydrophilic active materials.
- Assembled quasi-solid-state hybrid batteries using the wood-derived cathode.
Main Results:
- Achieved a wide operating voltage range of 0.6-2.0 V.
- Demonstrated a superior specific capacity of 656.5 mAh g-1 and energy density of 644.7 Wh kg-1.
- Observed a ≈370% capacity improvement compared to typical nickel-Zn batteries.
Conclusions:
- The wood-derived cathode with oriented three-phase interfacial channels effectively accelerates reaction dynamics.
- This approach significantly enhances the performance and durability of hybrid Zn batteries.
- The developed hybrid battery represents a significant advancement in alkaline Zn battery technology.
