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Waste Biomass-Derived Carbon Anode for Enhanced Lithium Storage
Takashi J Yokokura1, Jassiel R Rodriguez1, Vilas G Pol1
1Davidson School of Chemical Engineering, Purdue University, 480 W Stadium Avenue, West Lafayette, Indiana 47907, United States.
ACS Omega
|August 18, 2020
Summary
Waste avocado seeds create high-capacity battery anodes. This sustainable biomass material offers excellent stability and capacity, outperforming graphite and graphene for renewable energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Sustainable Energy
Background:
- Growing populations increase food demand, creating waste biomass.
- Developing sustainable battery electrode materials from waste biomass is crucial.
- Current biomass-derived batteries often lack competitive capacity and stability.
Purpose of the Study:
- To develop a high-performance anode material from waste avocado seeds.
- To evaluate the electrochemical performance of the avocado seed-derived anode.
- To demonstrate the potential of waste biomass for renewable energy storage.
Main Methods:
- Synthesized amorphous carbon anode from waste avocado seeds.
- Tested anode cycling stability over 100 cycles at 100 mA g-1.
- Measured lithium-ion storage capacity and diffusion coefficients.
Main Results:
- Anode exhibited high cycling stability over 100 cycles.
- Achieved a capacity comparable to graphite (~315 mAh g-1 at 100 mA g-1).
- Capacitance mechanisms contributed 54% of lithium-ion storage, overcoming low diffusion coefficients (4.38 × 10-11 cm2 s-1).
Conclusions:
- Waste avocado seeds can be transformed into valuable battery anode materials.
- This biomass-derived anode offers superior stability and capacity compared to graphene.
- Redirecting waste streams into energy storage provides a sustainable solution.
