journal article·2025-10

Enhancing Structural Integrity With Stress‐Resilient Carbon for Stable Potassium‐Ion Storage

Yihan Yang, Jiawan Zhou, Hongwei Fu, Jie Wen, Yaqin Wu, Apparao M. Rao, Juanjuan Cheng, Xinzhi Yu, Jiang Zhou, Bingan Lu

Advanced Functional Materials· Volume 35· Issue 42
Publisher page

Abstract

Abstract While graphite anodes hold promise for potassium‐ion batteries (PIBs), their practical implementation faces critical challenges stemming from mechanical degradation and interfacial compatibility in carbonate ester electrolytes. Herein, a hierarchical porous carbon architecture derived from renewable biomass precursors with stress‐resilient characteristics are developed to enhance structural integrity and cyclability in PIBs. The synergistic combination of homogeneous shell and structural frameworks enables the anode to form an integrated solid electrolyte interphase with uniform stress distribution in carbonate ester‐based electrolyte. The optimized anode delivers a high reversible capacity of 170.3 mAh g −1 at 200 mA g −1 , with a capacity retention of 84.0% after 600 cycles. Remarkably, full cells integrating Mn‐based layered oxides and Prussian blue analogue cathodes demonstrate 70.1% and 70.8% capacity retention after 200 cycles. This work establishes a biomass‐to‐device engineering paradigm for sustainable energy storage systems, offering fundamental insights into interface‐structure‐property relationships for alkali‐metal ion batteries.
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Research context

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Extraction and Separation Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physics and Electronics Hunan University Changsha 410082 China

Hunan Provincial Key Laboratory of Carbon Neutrality and Intelligent Energy, School of Resource & Environment Hunan University of Technology and Business Changsha 410205 China

State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China

Department of Physics and Astronomy, Clemson Nanomaterials Institute Clemson University Clemson SC 29634 USA

School of Materials Science and Engineering, Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and Technology Xiangtan 411201 China

Greater Bay Area Institute for Innovation Hunan University Guangzhou 511300 China

School of Materials Science and Engineering Central South University Changsha 410083 China

Funding

National Natural Science Foundation of China · Basic and Applied Basic Research Foundation of Guangdong Province · Science and Technology Program of Hunan Province

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