journal article·2024-01Open access

Mesoporous N,S‐Rich Carbon Hollow Nanospheres Controllably Prepared From Poly(2‐aminothiazole) with Ultrafast and Highly Durable Potassium Storage

Hao Li, Quanwei Ma, Yizhi Yuan, Rui Wang, Ziyang Wang, Qianyu Zhang, Longhai Zhang, Jian Zhu, Shilin Zhang, Jianfeng Mao, Hongbao Li, Svetlana Eliseeva, Veniamin Kondratiev, Yun Zhang, Chaofeng Zhang, Yuping Wu

Advanced Functional Materials· Volume 34· Issue 5

Abstract

Abstract Carbon with few active sites and narrow interlayer distance as anode for potassium ion batteries (PIBs) always shows low capacity, sluggish kinetics, and low Columbic efficiency. Herein, poly(2‐aminothiazole) (P2AT) hollow nanospheres are first synthesized as a carbon source for high N, S co‐doped carbon hollow nanospheres (NS‐HCSs). The hollow P2AT nanospheres can be controllably synthesized with an Ostwald ripening process. The unique doping and structure endow the NS‐HCSs with high content of N and S dopants in carbon, mesoporous structure with enlarged interlayer distance, elevated ratio of N‐6 and N‐5 species, enhanced conductivity, abundant surface defects, and large active sites. When evaluated as an anode for PIBs, NS‐HCSs exhibit a high reversible capacity of 422 mAh g‒1 and excellent long‐term cycling performance. Using combined experiment and theoretical computation, including in situ TEM and in situ Raman, the K‐storage mechanism and dynamic evolution processes of NS‐HCSs, including low volume expansion, enhanced K‐ion adsorption, and stable composition and structure evolution during repeating potassiation/de‐potassiation processes is revealed. This quantitative design for highly durable K‐storage and large capacity in carbon can be advantageous for the rational design of anode materials of PIBs with ideal electrochemical performance.
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

Engineering Research Center of Alternative Energy Materials & Devices Ministry of Education College of Materials Science and Engineering Sichuan University Chengdu 610064 P. R. China

Institutes of Physical Science and Information Technology Leibniz Joint Research Center of Materials Sciences Engineering Laboratory of High‐Performance Waterborne Polymer Materials of Anhui Province Anhui Graphene Engineering Laboratory Key Laboratory of Structure and Functional Regulation of Hybrid Material (Ministry of Education) Anhui University Hefei 230601 P. R. China

State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan Key Laboratory of Two‐Dimensional Materials Advanced Catalytic Engineering Research Center of the Ministry of Education Hunan University Changsha 410082 P. R. China

School of Chemical Engineering & Advanced Materials The University of Adelaide Adelaide South Australia 5005 Australia

Department of Electrochemistry Institute of Chemistry Saint Petersburg State University 7/9 Universitetskaya nab. St. Petersburg 199034 Russia

School of Energy and Environment Southeast University Nanjing 211189 P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Anhui Province

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