Activating an MXene as a host for EMIm+ by electrochemistry-driven Fe-ion pre-intercalation. Issue 32 (28th July 2020)

• Record Type: Journal Article
• Authors: Han, Wenjuan; Lu, Ming; Chen, Junnan; Li, Haojie; Li, Haibo; Zhang, Bingsen; Zhang, Wei; Zheng, Weitao
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 32(2020)
• Page Start: 16265
• Page End: 16270
• Publication Date: 2020-07-28
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta05151a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : An electrochemistry-driven Fe-ion pre-intercalated MXene with superior EMIm + reversible storage abilities for dual-ion battery use was shown. Abstract : EMIm +, as a substitute for Li +, can solve the initial problems that accompany lithiation/delithiation processes on an anode. However, the larger size of EMIm + limits the options when it comes to electrode materials. Herein, a multilayered Ti3 C2 T x MXene was electrochemically pre-intercalated with Fe ions to achieve EMIm + hosting abilities. As a result, a pre-intercalated MXene electrode exhibited enhanced EMIm + transport and storage capabilities. When integrated with an EMIm + [PF6] − ionic liquid electrolyte, the assembled DIB provides an energy density of 76 W h kg −1 at a power density of 360 W kg −1, and 94.3% of the energy density is retained after 50 cycles. Compared with a pristine example, the Fe pre-intercalated Ti3 C2 T x MXene showed a significant increase in electrochemical performance. Employing this approach to optimize layered materials may open up a new route for accurately tuning intercalated materials.