1
|
Wu Y, Sun Y, Tong Y, Li H. FeSb 2 Nanoparticles Embedded in 3D Porous Carbon Framework: An Robust Anode Material for Potassium Storage with Long Activation Process. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201934. [PMID: 35561065 DOI: 10.1002/smll.202201934] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/21/2022] [Indexed: 06/15/2023]
Abstract
Due to their characteristics of high capacity and appropriate potassiation/depotassiation potential, Sb-based materials have become a class of promising anode materials for potassium ion batteries (PIBs). However, the huge strain induced by potassiation/depotassiation limits their ability to periodically accept/release K+ . Herein, a composite with FeSb2 nanoparticles embedded in a 3D porous carbon framework (FeSb2 @3DPC) is successfully constructed as an extremely stable anode material for PIBs. Benefiting from the synergistic effect of the design of nano and porous structures, the introduction of the inactive metal Fe, the firm anchoring of the FeSb2 nanoparticles by the carbon material, and the incomplete reaction of the FeSb2 , the FeSb2 @3DPC can achieve an ultra-long cycle life of over 4000 cycles at a current density of 500 mA g-1 . Furthermore, ex situ X-ray diffraction and transmission electron microscopy reveal a gradual activation process of FeSb2 for potassium storage. Fortunately, after activation, the electrochemical polarization of the FeSb2 @3DPC anode gradually alleviates and the capacitance-controlled charge storage mode further dominates compared with the diffusion-controlled mode, all of which promote the FeSb2 @3DPC to maintain the stable potassium storage capability.
Collapse
Affiliation(s)
- Yuanji Wu
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632, P. R. China
| | - Yingjuan Sun
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632, P. R. China
| | - Yong Tong
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632, P. R. China
| | - Hongyan Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632, P. R. China
| |
Collapse
|
2
|
Kim H, Choi W, Yoon J, Um JH, Lee W, Kim J, Cabana J, Yoon WS. Exploring Anomalous Charge Storage in Anode Materials for Next-Generation Li Rechargeable Batteries. Chem Rev 2020; 120:6934-6976. [DOI: 10.1021/acs.chemrev.9b00618] [Citation(s) in RCA: 233] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hyunwoo Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Woosung Choi
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Jaesang Yoon
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Ji Hyun Um
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Wontae Lee
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Jaeyoung Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| | - Jordi Cabana
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Won-Sub Yoon
- Department of Energy Science, Sungkyunkwan University (SKKU), Natural Sciences Campus, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi 16419, South Korea
| |
Collapse
|