The dual-function sacrificing template directed formation of MoS₂/C hybrid nanotubes enabling highly stable and ultrafast sodium storage

Abstract

A unique dual-function sacrificing template directed strategy was developed to synthesize MoS2/carbon hybrid nanotubes, achieving greatly improved sodium storage performance.

2D Sandwiched Nano Heterostructures Endow MoSe2/TiO2−x/Graphene with High Rate and Durability for Sodium Ion Capacitor and Its Solid Electrolyte Interphase Dependent Sodiation/Desodiation Mechanism

“…As a result, the ICE of SICs with presodiation under different mass ratios is about 89% (Figure 6c), which is two times larger than that without presodiation treatment (Figure S27d, Supporting Information). Therefore, the optimized SICs can deliver a maximum energy density of 109 Wh kg −1 at the power density of 100 W kg −1 , and exhibit an excellent energy density retention, when the power density reaches 8 kW kg −1 , the energy density remains 64 Wh kg −1 , surpassing many results reported in literatures (Figure 6d), such as VS 2 /C, [ 8 ] MoSe 2 /N, P@Carbon, [ 22 ] MoSe 2 /graphene, [ 39 ] MoSe 2 and SnO 2 , [ 40 ] S/Ni@C, [ 57 ] MCNFs‐V, [ 58 ] TiS 2 /MXene, [ 59 ] Na–Mn–Co–Mg–O, [ 60 ] MoS 2 /C, [ 61 ] metal oxide‐based (Mn 2+ /Nb 5+ ). [ 62 ] As expected, the SICs also show a great capacity retention of 88% at the current density of 2 A g −1 after 3000 cycles (Figure 6e), demonstrating the superior and stable performance of MoSe 2 –TiO 2− x –G nano heterostructures anode.…”

Sodium‐ion capacitors: Materials, Mechanism, and Challenges

“…To this end, Zhang and co‐workers reported a dual‐function sacrificial template (Sb 2 S 3 ) strategy to prepare MoS 2 /carbon hybrid nanotubes (MoS 2 /C‐HNTs) . Notably, Sb 2 S 3 was not only used as a sulfur source upon the high‐performance decomposition but also played a critical role in the formation of hollow structures upon the sublimation of antimony.…”

“… a, b) High‐magnification TEM images, c–e) HRTEM analysis, and f) corresponding HAADF‐STEM image and elemental mapping results of MoS 2 /C‐HNTs. Reproduced with permission . Copyright 2019, Royal Society of Chemistry.…”

Silicon Oxycarbide-Graphite Electrodes for High-Power Energy Storage Devices

“…Having these requirements in mind, several solutions have been tested, specifically those originally applied in lithium-ion batteries. Various materials, based on Li 4 T 5 O 12 (LTO) [ 3 , 12 ], transition metal oxides/graphene composites (Ni 2 O 5 , MnO 2 , CoO) [ 13 , 14 , 15 ], transition metal sulfides (MoS 2 , CoS) [ 16 , 17 ] or carbonaceous materials (hard carbon, soft carbon, graphite) [ 18 , 19 , 20 ] are reported as potential anodes for LIC. However, most of them, except for carbonaceous materials, exhibit a relatively high delithiation potential (approximately 1.5 V), which combined with low the capacity of a cathode does not provide high energy.…”