Reliable and General Route to Inverse Opal Structured Nanohybrids of Carbon‐Confined Transition Metal Sulfides Quantum Dots for High‐Performance Sodium Storage. Issue 25 (25th July 2018)

• Record Type: Journal Article
• Authors: Hu, Xiang; Jia, Jingchun; Wang, Genxiang; Chen, Junxiang; Zhan, Hongbing; Wen, Zhenhai
• Is Part Of: Advanced energy materials. Volume 8:Issue 25(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-07-25
• Subjects: anodes -- inverse opal structure -- quantum dots -- sodium‐ion batteries; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201801452
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: Sodium‐ion batteries (SIBs) have recently attracted increasing attention as the promising alternative to lithium‐ion batteries due to their multiple advantages of abundant reserves and low cost. However, the development of highly desirable anode materials suitable for SIBs is still hampered by a rather low capacity, poor rate capability, and cycling stability. Herein, a deliberate design to implement reliable and simple fabrication of an inverse opal structured nanohybrid of carbon‐confined various transition metal sulfides quantum dots (QDs) is presented. Comprehensive characterizations demonstrate that the hybrids hold a 3D architecture with uniform dispersion of QDs in a conductive carbon matrix that in turn encapsulates these quantum dots. With Co9 S8 as an example, such a unique architecture, when applied as the anode of SIBs, endows the hybrids with multiple advantages including a high reversible specific capacity, extraordinary high rate capability, and excellent durability over 2000 cycles charging–discharging process. Abstract : An inverse opal structured nanohybrid of carbon‐confined transition metal sulfide quantum dots is designed for sodium‐ion batteries. Such ordered porous architecture not only efficiently facilitates the penetration of electrolyte ions and transport of electrons, but also improves the conductivity and maintains structural integrity. Consequently, this hybrid exhibits excellent electrochemical performance, which makes it a very promising anode for sodium‐ion batteries.