Preferential Pyrolysis Construction of Carbon Anodes with 8400 h Lifespan for High-Energy-Density K-ion Batteries

Jian Yin; Junjie Jin; Cailing Chen; Yongjiu Lei; Zhengnan Tian; Yizhou Wang; Zhiming Zhao; Abdul Hamid Emwas; Yunpei Zhu; Yu Han; Udo Schwingenschlögl; Wenli Zhang; Husam N. Alshareef

doi:10.1002/anie.202301396

Preferential Pyrolysis Construction of Carbon Anodes with 8400 h Lifespan for High-Energy-Density K-ion Batteries

Jian Yin, Junjie Jin, Cailing Chen, Yongjiu Lei, Zhengnan Tian, Yizhou Wang, Zhiming Zhao, Abdul Hamid Emwas, Yunpei Zhu, Yu Han, Udo Schwingenschlögl, Wenli Zhang^*, Husam N. Alshareef^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Carbonaceous materials are promising anodes for practical potassium-ion batteries, but fail to meet the requirements for durability and high capacities at low potentials. Herein, we constructed a durable carbon anode for high-energy-density K-ion full cells by a preferential pyrolysis strategy. Utilizing S and N volatilization from a π–π stacked supermolecule, the preferential pyrolysis process introduces low-potential active sites of sp² hybridized carbon and carbon vacancies, endowing a low-potential “vacancy-adsorption/intercalation” mechanism. The as-prepared carbon anode exhibits a high capacity of 384.2 mAh g⁻¹ (90 % capacity locates below 1 V vs. K/K⁺), which contributes to a high energy density of 163 Wh kg⁻¹ of K-ion full battery. Moreover, abundant vacancies of carbon alleviate volume variation, boosting the cycling stability over 14 000 cycles (8400 h). Our work provides a new synthesis approach for durable carbon anodes of K-ion full cells with high energy densities.

Original language	English (US)
Article number	e202301396
Journal	Angewandte Chemie - International Edition
Volume	62
Issue number	17
DOIs	https://doi.org/10.1002/anie.202301396
State	Published - Apr 17 2023

Bibliographical note

Funding Information:
The research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) (BAS/1/1317‐01‐01).

Publisher Copyright:
© 2023 Wiley-VCH GmbH.

Keywords

Carbon Anode
Potassium-Ion Battery
Preferential Pyrolysis
sp Hybridized Carbon
Vacancy

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1002/anie.202301396

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Yin, J., Jin, J., Chen, C., Lei, Y., Tian, Z., Wang, Y., Zhao, Z., Emwas, A. H., Zhu, Y., Han, Y., Schwingenschlögl, U., Zhang, W., & Alshareef, H. N. (2023). Preferential Pyrolysis Construction of Carbon Anodes with 8400 h Lifespan for High-Energy-Density K-ion Batteries. Angewandte Chemie - International Edition, 62(17), Article e202301396. https://doi.org/10.1002/anie.202301396

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abstract = "Carbonaceous materials are promising anodes for practical potassium-ion batteries, but fail to meet the requirements for durability and high capacities at low potentials. Herein, we constructed a durable carbon anode for high-energy-density K-ion full cells by a preferential pyrolysis strategy. Utilizing S and N volatilization from a π–π stacked supermolecule, the preferential pyrolysis process introduces low-potential active sites of sp2 hybridized carbon and carbon vacancies, endowing a low-potential “vacancy-adsorption/intercalation” mechanism. The as-prepared carbon anode exhibits a high capacity of 384.2 mAh g−1 (90 % capacity locates below 1 V vs. K/K+), which contributes to a high energy density of 163 Wh kg−1 of K-ion full battery. Moreover, abundant vacancies of carbon alleviate volume variation, boosting the cycling stability over 14 000 cycles (8400 h). Our work provides a new synthesis approach for durable carbon anodes of K-ion full cells with high energy densities.",

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author = "Jian Yin and Junjie Jin and Cailing Chen and Yongjiu Lei and Zhengnan Tian and Yizhou Wang and Zhiming Zhao and Emwas, {Abdul Hamid} and Yunpei Zhu and Yu Han and Udo Schwingenschl{\"o}gl and Wenli Zhang and Alshareef, {Husam N.}",

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doi = "10.1002/anie.202301396",

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AU - Yin, Jian

AU - Jin, Junjie

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AU - Lei, Yongjiu

AU - Tian, Zhengnan

AU - Wang, Yizhou

AU - Zhao, Zhiming

AU - Emwas, Abdul Hamid

AU - Zhu, Yunpei

AU - Han, Yu

AU - Schwingenschlögl, Udo

AU - Zhang, Wenli

AU - Alshareef, Husam N.

N1 - Funding Information: The research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) (BAS/1/1317‐01‐01). Publisher Copyright: © 2023 Wiley-VCH GmbH.

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Y1 - 2023/4/17

N2 - Carbonaceous materials are promising anodes for practical potassium-ion batteries, but fail to meet the requirements for durability and high capacities at low potentials. Herein, we constructed a durable carbon anode for high-energy-density K-ion full cells by a preferential pyrolysis strategy. Utilizing S and N volatilization from a π–π stacked supermolecule, the preferential pyrolysis process introduces low-potential active sites of sp2 hybridized carbon and carbon vacancies, endowing a low-potential “vacancy-adsorption/intercalation” mechanism. The as-prepared carbon anode exhibits a high capacity of 384.2 mAh g−1 (90 % capacity locates below 1 V vs. K/K+), which contributes to a high energy density of 163 Wh kg−1 of K-ion full battery. Moreover, abundant vacancies of carbon alleviate volume variation, boosting the cycling stability over 14 000 cycles (8400 h). Our work provides a new synthesis approach for durable carbon anodes of K-ion full cells with high energy densities.

AB - Carbonaceous materials are promising anodes for practical potassium-ion batteries, but fail to meet the requirements for durability and high capacities at low potentials. Herein, we constructed a durable carbon anode for high-energy-density K-ion full cells by a preferential pyrolysis strategy. Utilizing S and N volatilization from a π–π stacked supermolecule, the preferential pyrolysis process introduces low-potential active sites of sp2 hybridized carbon and carbon vacancies, endowing a low-potential “vacancy-adsorption/intercalation” mechanism. The as-prepared carbon anode exhibits a high capacity of 384.2 mAh g−1 (90 % capacity locates below 1 V vs. K/K+), which contributes to a high energy density of 163 Wh kg−1 of K-ion full battery. Moreover, abundant vacancies of carbon alleviate volume variation, boosting the cycling stability over 14 000 cycles (8400 h). Our work provides a new synthesis approach for durable carbon anodes of K-ion full cells with high energy densities.

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Preferential Pyrolysis Construction of Carbon Anodes with 8400 h Lifespan for High-Energy-Density K-ion Batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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