Biomass‐Derived Carbon With Large Interlayer Spacing for Anode of Potassium Ion Batteries
Source abstract
Abstract
Abstract Potassium‐ion batteries (PIBs) are emerging as powerful candidate for grid‐oriented energy storage owing to their potentially low cost. Carbon is considered the promising anode for PIBs on the basis of its high conductivity and abundant sources. The biggest challenge confronted by carbon anodes lies in insufficient cycle life as well as rate capability, resulting from the limited interlayer spacing of the sp2‐hybrid carbon incompatible with the large‐radius potassium. Herein, a biomass‐derived carbon with a large interlayer spacing of 0.44 nm is fabricated via a zinc‐assisted pyrolysis synthesis. The unique structure endows the carbon with superior capacity, rate capability, and cycle durability. The large interlayer spacing of carbons can promote fast potassium diffusion and alleviate the volume expansion during potassiation, conferring those rate capabilities and cycleability. The interconnected network structure is also able to shorten both the transport distances of electrons and ions. The demonstration exemplifies an advanced carbon for anodes of PIBs for energy storage applications.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
National Laboratory of Solid State Microstructures (NLSSM) Collaborative Innovation Center of Advanced Microstructures Frontiers Science Center for Critical Earth Material Cycling College of Engineering and Applied Sciences Nanjing University Nanjing 210093 China
State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China
State Key Laboratory of Precision Spectroscopy School of Physics and Materials Science East China Normal University Shanghai 200241 China
Key Laboratory of Mesoscopic Chemistry of Ministry of Education School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
Funding
Fundamental Research Funds for the Central Universities · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China
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