Journal
CHEMICAL ENGINEERING JOURNAL
Volume 405, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.126897
Keywords
Potassium ion batteries; Biomass-derived carbon; Anode materials; Morphology engineering; Electrochemical performance
Categories
Funding
- National Key Research and Development Program of China [2016YFC0301402]
- Key RAMP
- D plan of Shandong Province [2017CXGC0407, 2016GGX4303, 2017CXGC0409, 2019JZZY010307]
- National Natural Science Foundation of China [51972198]
- Project of the Taishan Scholar [tsqn201812002]
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This review highlights the advantages of biomass-based carbon materials as anode materials for potassium-ion batteries, showcasing their elaborate biological structures, strong physicochemical adsorptions, environmental benignity, and cost effectiveness, making them ideal candidates for biocompatible energy-storage systems. The intrinsic diversity of bio-microstructures in biomass-based carbon materials provides various merits for rapid ion/electron channels, strengthened mechanical substrates, and in-situ templates for further electrode designs, enabling structurally-tuned surface chemistry in potassium-ion batteries anodes.
Pursuit of advanced batteries with high energy density and low cost is the eternal goal for electrochemists. Potassium-ion batteries (KIBs) become a core focus to meet the need for scalable power sources in both academic and industrial energy-harvesting area. As the key to boosting development of KIBs, the advancement of highperformance anode materials helps to increase their competitiveness and feasibility. In this sense, biomass-based carbon materials with elaborate biological structures, strong physicochemical adsorptions, environmental benignity and cost effectiveness tick almost all the right boxes as a material for biocompatible energy-storage systems. More importantly, their intrinsic diversity of bio-microstructures provide considerable merits involving rapid ion/electron channels, strengthened mechanical substrates as well as in-situ templates for further electrode designs, allowing for achieving structurally-tuned surface chemistry in KIBs anodes. In this review, by focusing on the aspects of pure biomass carbons and biomass carbon-metal composites, a rapid glimpse at biomass carbon-based anode materials with various micro-architectures is provided, covering the architectural geometries, synthetic strategies, energy-storing mechanisms and electrochemical characteristics. In addition, a brief perspective on the imminent challenges and future directions of bio-carbon anodes in KIBs is also highlighted. We hope to cast a valuable outlook for structurally-controlled biomass-based anode materials in KIBs.
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