Abstract

Hierarchical carbon-rich materials have shown immense potential for various electrochemical applications. Metal–organic frameworks (MOFs) are well suited precursors for obtaining such templated carbon matrices. Usually these conversions are carried out by energy intensive processes and lead to the presence of toxic transition metal residues. Herein, we demonstrate the green, scalable, microwave-assisted synthesis of a three-dimensional s-block metal based MOF and its efficient transformation into a carbonaceous material. The MOF-derived solid functions as a negative electrode for lithium-ion batteries having moderate low-rate capacities and cycling stability.

Highlights

  • The continuously rising energy demands have actuated intense efforts in the domain of electrochemical energy storage (EES) technologies.[1,2,3] Among other devices, rechargeable lithium-ion batteries (LIBs) have garnered remarkable research attention as they have been widely commercialized and are potentially suited for several applications.[4,5] To comply with the widening scope, current research is focussed on the development of new materials for different battery components.[6]

  • An important challenge in contemporary Metal–organic frameworks (MOFs) research is the ability to synthesize on bulk scale, with energy efficient methods and creation of low-level waste.[32,33,34]

  • Microwave-assisted preparation of active materials is relevant to applications such as battery electrode materials. Based on this background and in our exploration of s-block MOFs for EES applications, we report the green, scalable microwave-assisted synthesis of a Li-based 3-dimensional MOF viz. Li-NTA (NTA stands for 2-nitro terephthalate), and its facile, energy-efficient conversion into hierarchical carbonaceous material (Li-NTA-C) (Fig. 1)

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Summary

Introduction

The continuously rising energy demands have actuated intense efforts in the domain of electrochemical energy storage (EES) technologies.[1,2,3] Among other devices, rechargeable lithium-ion batteries (LIBs) have garnered remarkable research attention as they have been widely commercialized and are potentially suited for several applications.[4,5] To comply with the widening scope, current research is focussed on the development of new materials for different battery components.[6]. We demonstrate the green, scalable, microwaveassisted synthesis of a three-dimensional s-block metal based MOF and its efficient transformation into a carbonaceous material. The MOF-derived solid functions as a negative electrode for lithium-ion batteries having moderate low-rate capacities and cycling stability.

Results
Conclusion
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