Aging mechanism of MoS2 nanosheets confined in N-doped mesoporous carbon spheres for sodium-ion batteries

Space‐Confined Yolk‐Shell Construction of Fe3O4 Nanoparticles Inside N‐Doped Hollow Mesoporous Carbon Spheres as Bifunctional Electrocatalysts for Long‐Term Rechargeable Zinc–Air Batteries

“…[ 19,20 ] The transition metal nanoparticles are confined within permeable robust N‐doped carbon shell, which nanoscale void formed between yolk and shell to induce localized high instantaneous concentration for driving fast heterogeneous catalysis. [ 21,22 ] The N‐doped mesoporous carbon shell can be used as an effective electron conductor, electrolyte transporter and yolk nucleus protector, which can effectively inhibit the agglomeration of transition metal nanoparticles and confine the catalytic ORR/OER in the void of yolk‐ shell structure. [ 23,24 ] So far, the design of yolk‐shell structure carbon materials are mainly through layer‐by‐layer templating strategy.…”

Hollow Porous MnFe2O4 Sphere Grown on Elm‐Money‐Derived Biochar towards Energy‐Saving Full Water Electrolysis

“…The hollow porouss phere is as pecial functional material, due to its unique structure, whichh as become ap romising and attractive material for chemical catalysis, nanoreactors, drug delivery vehicles, and energy conversion and storage. [40][41][42][43][44][45][46] Nano-sized hollow porouss pheres can adjust the volume change in the catalytic process to increaset he structural stability.T herefore, hollow porousM nFe 2 O 4 spheres were prepared in presentw ork to obtain excellent HER and OER performance, and it was further optimized by growingo nt he surfaceo fb iochar.T he elm moneyh as meritorious physical and chemical properties because of its unique structure and natural carbon skeleton, which could afford many natural pores and facilitate the rapid transfer of electrolytes, and is beneficialt of aster release of air bubbles. [47][48][49] In this paper, MnFe 2 O 4 hollow porous sphere ande lm-money-derived biocharc omposites (MnFe 2 O 4 / BC) are obtained as dual-functional electrocatalysts for overall water decomposition.…”

“…The hollow porous sphere is a special functional material, due to its unique structure, which has become a promising and attractive material for chemical catalysis, nanoreactors, drug delivery vehicles, and energy conversion and storage [40–46] . Nano‐sized hollow porous spheres can adjust the volume change in the catalytic process to increase the structural stability.…”

Porous Copper Sulfide Microflowers Grown In Situ on Commercial Copper Foils as Advanced Binder‐Free Electrodes with High Rate and Long Cycle Life for Sodium‐Ion Batteries

“…As the current density increases, the polarization voltage does not increase greatly, indicating the rapid kinetics of the electrode. This excellent rate performance is far superior compared to other previously reported sulfide anode materials (Figure 3c) [12,30–33] . In contrast, the CuS electrode displays inferior rate performance.…”

“…This excellent rate performance is far superior compared to other previously reported sulfide anode materials (Figure 3c). [12,[30][31][32][33] In contrast, the CuS electrode displays inferior rate performance. It exhibits only a reversible capacity of 354, 324, 284, 245, 203, 169, 131, 99, 67 and 36 mAh g À 1 at the current density of 1, 2, 3, 4, 5, 10, 20, 30, 40 and 60 A g À 1 , respectively.…”