Li‐S‐Batteries: Advanced Lithium–Sulfur Batteries Enabled by a Bio‐Inspired Polysulfide Adsorptive Brush (Adv. Funct. Mater. 46/2016)

Abstract

On page 8418, R. Chen, R. V. Kumar, and co‐workers describe a bio‐inspired chemi‐functional interlayer for lithium sulfur batteries. The adsorption of migrating polysulfides (yellow) on the surface of brush‐like zinc oxide nanowire arrays (blue) mimics the adsorption of nutrients in intestinal cells. The novel interlayer improves lithium‐sulfur battery performance and will surely inspire the design of new materials with brushlike nano/micro‐architecture as traps or filters for a wide range of applications.

Enhanced Electrochemical Kinetics and Polysulfide Traps of Indium Nitride for Highly Stable Lithium–Sulfur Batteries

“…However, the Li–S batteries with a pristine separator exhibit a capacity of only 103.4 mAh g –1 after 1000 cycles. Furthermore, the excellent cycling stability is superior to previously reported hybrids (Figures e and S7 and Table S1), which is ascribed to the strong chemical anchor of soluble polysulfides by InN and the accelerated conversion reaction of intermediates. − Besides, the electrochemical performance of the battery with InN was also investigated as the cathode in a voltage range of 1.7–2.8 V. It possesses a low discharge capacity of only 9.2 mAh g –1 at 0.1 C, which contributes almost nothing to the measured capacity of the Li–S battery (Figure S8).…”

Hierarchical MnCo2O4/NiMn Layered Double Hydroxide Composite Nanosheet Arrays on Nickel Foam for Enhanced Electrochemical Storage in Supercapacitors

“…(Table 1). [20][21][22][23][24][25][46][47][48][49] The significantly improved electrochemical performance of the MnCo 2 O 4 /NiMn LDH composite electrodes probably originated from the good synergistic effects of the composite compositions containing layer-by-layer microstructures, which fully engaged the electrochemical performance of the MnCo 2 O 4 and NiMn LDH. Figure 7d shows the specific capacitances versus the cycle numbers of the single MnCo 2 Figure S6.…”

“…Wu et al constructed core-shell MnCo 2 O 4 @Ni(OH) 2 composite nanoflowers, that achieved a specific capacitance of 2124 F g À 1 at 5 A g À 1 , which was more than four times greater than the pristine MnCo 2 O 4 electrode. [22] The specific capacitance at 20 A g À 1 was found to be 702 F g À 1 . Our group also reported the synthesis of MnCo 2 O 4 @MnMoO 4 core-shell NAs with a specific capacity that was four times greater than the single MnCo 2 O 4 NAs (885 C g À 1 at 3 A g À 1 ).…”

Hierarchical Carbon Micro/Nanonetwork with Superior Electrocatalysis for High‐Rate and Endurable Vanadium Redox Flow Batteries

“…[3][4][5] Among these systems, the vanadium redox flow battery (VRFB) shows important advantages of a flexible design, long cycle life, and low cost of maintenance. [6][7][8] Actually, VRFB employs the same element with different valence state as positive and negative reaction species, which largely restrains the problems of cross-contamination between positive and negative electrolyte compared with other redox flow batteries. And as the redox reaction zone, the electrode material greatly determines the activation and concentration polarization of the redox reaction and has an enormous impact on the energy efficiency (EE) and capacity of VRFBs.…”