Biomass‐Derived Carbon with Heavy Doping for Anode of Potassium Ion Batteries
The potassium-ion battery (PIB) is anticipated to be a cost-effective candidate for large-scale energy storage for the green power grid. For PIB anodes, carbon is promising owing to its conductivity and abundance. Yet, the insufficient cycle life and rate performance of the carbon anode remain the bottleneck limiting PIBs, stemming from the mismatch between the narrower graphitic interlayer spacing and the larger radius of potassium. Herein, a large number of heteroatoms (18.2 at%) are incorporated into a biomass-derived carbon. The synthesized carbon material is thus endowed with improved interlayer spacing as well as active sites and mesoporous structures. These attributes collectively contribute to outstanding cycle life (18 000 cycles) and rate capability (260 mAh g<sup>-1</sup> at 20 A g<sup>-1</sup>), making it a promising candidate for PIBs for grid-oriented energy storage.
Authors
- Xuebin Wang (ORCID: https://orcid.org/0009-0001-9682-9969)
- Yuyan Qiu
- Dingfei Deng (ORCID: https://orcid.org/0000-0003-2672-7497)
- Zhipeng Sun (ORCID: https://orcid.org/0000-0002-2181-1537)
- Lingling Gao (ORCID: https://orcid.org/0000-0003-2927-1333)
- Yang Gao (ORCID: https://orcid.org/0000-0001-9899-9016)
- P. Zhang
- Yoshio Bando
- Lei Wang
- Yue Wang
- Xiangfen Jiang
- Lijun Yang
- Xun Ge
Institutions
- University of Wollongong (AU)
- King Saud University (SA)
- University Town of Shenzhen (CN)
- Tsinghua–Berkeley Shenzhen Institute (CN)
- Shanghai Institute of Technical Physics (CN)
- Collaborative Innovation Center of Advanced Microstructures (CN)
- Ministry of Education and Child Care (CA)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2026-01-22
- DOI
- https://doi.org/10.1002/adma.202520046
- Citations
- 1
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 21.93