A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode

Lei, Da; Gao, Yuyang; Hou, Zhidong; Ren, Lingbo; Jiang, Mingwei; Cao, Yunjing; Zhang, Yu; Wang, Jian-Gan

doi:10.3390/batteries9050241

Open AccessFeature PaperArticle

A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode

by

Da Lei

^1,†,

Yuyang Gao

^1,†,

Zhidong Hou

¹,

Lingbo Ren

¹,

Mingwei Jiang

¹,

Yunjing Cao

¹,

Yu Zhang

^2,* and

Jian-Gan Wang

^1,*

¹

State Key Laboratory of Solidification Processing, Shaanxi Joint Lab of Graphene, School of Materials Science and Engineering, Northwestern Polytechnical University, No. 127, Youyi West Road, Xi’an 710072, China

²

School of Mechanical and Power Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China

^*

Authors to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Batteries 2023, 9(5), 241; https://doi.org/10.3390/batteries9050241

Submission received: 15 March 2023 / Revised: 12 April 2023 / Accepted: 23 April 2023 / Published: 24 April 2023

(This article belongs to the Special Issue Advances in High-Performance Supercapacitor)

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Abstract

Owing to the unique virtues of specific energy/power densities, lithium-ion capacitors (LICs) have been increasingly attracting research attention. However, the LICs are greatly restrained by the slow Li⁺-reaction kinetics of battery-type anodes, which is still a challenging task. In this work, we construct a superior LIC using ultrafine MnO/dual N-doped carbon (MnO/DNC) anode and activated N-doped porous carbon (ANC) derived from a homologous polypyrrole precursor. The uniform MnO ultrafine particles (~10 nm size) are well encapsulated into a dual-carbon framework, which provides fast ion/electron transportation and structural cushion for high-rate and long-durable energy storage. Accordingly, the anodic MnO/DNC achieves an impressive rate performance (179 mAh g⁻¹ @10 A g⁻¹) and a stable 500-cycling lifespan. The as-constructed LICs could deliver a large specific energy of 172 Wh kg⁻¹ at 200 W kg⁻¹ and retain at 37 Wh kg⁻¹ even at a high specific power of 15 kW kg⁻¹. It is believed that the design strategy of confining ultrafine conversion-type anode materials into a dual-carbon structure will expedite the development of advanced LICs.

Keywords: lithium-ion capacitor; MnO; dual-carbon structure; reaction kinetics

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MDPI and ACS Style

Lei, D.; Gao, Y.; Hou, Z.; Ren, L.; Jiang, M.; Cao, Y.; Zhang, Y.; Wang, J.-G. A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode. Batteries 2023, 9, 241. https://doi.org/10.3390/batteries9050241

AMA Style

Lei D, Gao Y, Hou Z, Ren L, Jiang M, Cao Y, Zhang Y, Wang J-G. A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode. Batteries. 2023; 9(5):241. https://doi.org/10.3390/batteries9050241

Chicago/Turabian Style

Lei, Da, Yuyang Gao, Zhidong Hou, Lingbo Ren, Mingwei Jiang, Yunjing Cao, Yu Zhang, and Jian-Gan Wang. 2023. "A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode" Batteries 9, no. 5: 241. https://doi.org/10.3390/batteries9050241

APA Style

Lei, D., Gao, Y., Hou, Z., Ren, L., Jiang, M., Cao, Y., Zhang, Y., & Wang, J.-G. (2023). A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode. Batteries, 9(5), 241. https://doi.org/10.3390/batteries9050241

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A Superior Lithium-Ion Capacitor Based on Ultrafine MnO/Dual N-Doped Carbon Anode and Porous Carbon Cathode

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