首页|Design and optimization of carbon materials as anodes for advanced potassium-ion storage
Design and optimization of carbon materials as anodes for advanced potassium-ion storage
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With the swift advancement of renewable energy and escalating demands for energy storage,potas-sium-ion batteries(PIBs)are increasingly recognized as a potent energy storage technology.Various carbon anode materials have been utilized for PIBs anodes owing to their superior K+storage capacity,outstanding cycling perfor-mance,elevated capacity,and cost-effectiveness.There-fore,it is imperative to explore and improve carbon anode materials.This review meticulously encapsulates the recent scholarly advancements in carbon anode materials for PIBs.It elucidates the operational mechanisms of carbon anode for PIBs,provides a synopsis of diverse carbon materials,and deliberates on the prevalent challenges,including cycling stability and potassium-ion diffusion rates.Although soft and hard carbon augmented potassium-ion capacities,the expansive surface areas coupled with the large ionic radius of K+pose substantial challenges to their structural design and optimization.Consequently,this review outlines strategic approaches to the design of car-bon materials for excellent potassium storage performance,including the expansion of interlayer spacing,modification of morphology,heteroatom doping,structural defect reg-ulation,incorporation of porous structures,and develop-ment of carbon-carbon composites.Finally,the challenges and prospective solutions of carbon anode materials for PIBs with superior energy density and cycling stability were proposed,providing a reasonable guidance for regu-lation design of carbon materials.
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