3D Interconnected Carbon Fiber Network‐Enabled Ultralong Life Na₃V₂(PO₄)₃@Carbon Paper Cathode for Sodium‐Ion Batteries

Abstract

Sericin-wrapped mesoporous silica nanoparticles (SMSNs) with pH and protease dual responsiveness are successfully fabricated as a lysosome-targeting drug delivery system by Guobin Wang, Lin Wang, Zheng Wang, and co-workers in article number 1602567. Such a dual responsive system offers a rapid doxorubicin release in lysosomes, which bypasses the membrane pump mediated drug efflux, thereby achieving the reversal of drug resistance. Mercuric Contamination An ultrasensitive surface-enhanced Raman scattering (SERS) substrate with large area uniform subnanometer "hot spots" is used to detect mercuric ions in water and sandy soil, by Hongbing Deng, Fubing Wang, Xiangheng Xiao, and co-workers in article number 1603347. The detection limit is as low as 8.3 × 10 −9 m. The uniformity of the SERS substrate is proved by Raman mapping, and the physical mechanism of SERS enhancements is supported by the finite difference time domain method. Drug Delivery In article number 1603109, Jiashu Sun, Haijun Yu, Xingyu Jiang, and co-workers utilize microfluidic chips to generate rigid pH-sensitive micellar nanocomplex (RPN) with tunable rigidity and acid-switchable surface charge for overcoming cancer drug resistance. The functionalization of RPN is realized through the incorporation of rigid PLGA core into pH-sensitive micelle. The RPN significantly enhances therapeutic efficacy against MCF-7/ADR xenograft tumor in mice, without the All inorganic halide perovskite nano-systems are expected to be promising materials for next generation lighting, display , and many other applications. Within two years, lots of interesting results have been observed. The synthesis and progresses on optoelectronic devices and optical applications, such as LEDs, photo-detectors, solar cells, and lasing, are summarized. Future directions, challenges and possible applications are also put forward. reviews Printing Functional 3D Microdevices by Laser-Induced Forward Transfer Slender, out-of-plane metal micro devices are made in a new spatial domain, by using laser-induced forward transfer (LIFT) of metals. Here, a thermocouple with a thickness of 10 µm and a height of 250 µm, consisting of platinum and gold pillars is demonstrated. Multi-material LIFT enables manufacturing in the micrometer to millimeter range, i.e., between lithography and other 3D printing technologies. communications Zeolitic imidazolate framework-8 (ZIF-8)-derived N-doped graphene analogous poly-hedrons (ZNGs) obtained via the direct carbonation of ZIF-8 are applied to photocat-alytic hydrogen evolution for the first time. The contents of different types of nitrogen atoms in ZNGs can be fine-tuned via the calcination temperature, which significantly influences the hydrogen evolution rate of the ZNGs. Hydrogen Evolution Ultrasensitive surface-enhanced Raman scattering (SERS) substrate with large-area uniform subnanometer "hot spots" is used to detect mercuric ion in water and sandy soil; the detection limit is as low as 8.3 × 10 −9 m. The uniformity of the SERS substrate is proved by Rama...

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

“…[168] Wang et al prepared 3D Na 3 V 2 (PO 4 ) 3 @ CNFs by a novel impregnation-carbonization technique by using carbon fiber derived from ordinary paper towel for introducing a interconnected conductive network. [169] Liu and coworker also reported a novel and scalable approach to produce hierarchically aligned porous carbon nanotube arrays (PCNTAs) on flexible carbon fibers. They used the catalytic conversion of ethanol on ZnO nanorod arrays and reduction-evaporation ZnO nanorods to obtain the uniform and controllable wall thicknesses of the final PCNTAs.…”

High Rate Capability and Enhanced Cyclability of Na3V2(PO4)2F3 Cathode by In Situ Coating of Carbon Nanofibers for Sodium‐Ion Battery Applications

“…[1][2][3][4][5] As ap otential alternative to lithium-ion batteries (LIBs), sodium-ion batteries( SIBs) are popularly considered ap romising choice for smart grid because of the abundance of sodiumr esources and the potential low cost. [8][9][10][11] Na + super ionic conductor (NASICON)-structured compounds, such as Na 3 V 2 (PO 4 ) 3 , [12][13][14][15] Na 3 V 2 (PO 4 ) 2 F 3 , [16][17][18][19] NaTi 2 (PO 4 ) 3 , [20,21] and so on, are as eries of widely studiedelectrode materials for SIB applications. [6,7] This is because the larger ionic radius of Na + is likely to result in serious structurald egradation as well as sluggish kinetic properties during the intercalation/deintercalation process.…”

Designed One‐Pot Strategy for Dual‐Carbon‐Protected Na3V2(PO4)3 Hybrid Structure as High‐Rate and Ultrastable Cathode for Sodium‐Ion Batteries

“…It is therefore highly desired to develop af acile one-pot strategy to synthesize high quality NVP-carbon nanohybrids;2 )Simple carbon coating of NVP nanoparticles can indeed optimize the cycling stability and rate performance to some extent, while the high rate cycling life is still unsatisfactory due to the high polarization and sluggishk inetics. [20,32,40] The intensity ratios of I D /I G are 0.983, 0.979 and0 .972 for NVP@C, NVP@C-300 and NVP@C&C, respectively,i ndicating as light higherg raphitization degree of the carbon matrix.In order to verify the effect of the dual carbon protected hybrid structure,t he electrochemical performance of NVP@C&Cw as then investigated as ac athode for SIBs. Specifically, the NVP@C&Cc athode can deliver an outstanding rate performance withacapacity retention rate of 51.5 %w ith the rate ranging from 0.5 to 100 C( 46.1 mAh À1 g À1 at 100 C) and ultralong cycling stability of 80.86 %c apacity retention after 6000 cycles at the high rate of 20 C, when evaluated as ac athode for SIBs.…”

“…[4][5][6] Although lithium-ion batteries (LIBs) have been considered as the most suitable powers ourcesf or consumable electronicsa nd/ore lectric vehicles after their successful commercialization in the 1990s, the rapidly increasing price of Li as ar esource has inevitably raised the issue of unaffordable cost when appliedi nl arge-scale energy storages ystems. [20][21][22][23] Uniquely, its open three dimensional (3D) structure is built up of corner-sharingV O 6 octahedra and PO 4 tetrahedra, interlinkedt hrough corners to establish the anion framework of [V 2 (PO 4 ) 3 ] 3À , [24][25][26][27] which provides favorable interstitials ites for the Na + insertion/extraction. [7][8][9][10] However,t here are remaining challenges for practical applications of SIBs, such as the relativelyl ow power/energy density and unsatisfactory cycle life.…”

“…[7][8][9][10] However,t here are remaining challenges for practical applications of SIBs, such as the relativelyl ow power/energy density and unsatisfactory cycle life. [20][21][22][23] Uniquely, its open three dimensional (3D) structure is built up of corner-sharingV O 6 octahedra and PO 4 tetrahedra, interlinkedt hrough corners to establish the anion framework of [V 2 (PO 4 ) 3 ] 3À , [24][25][26][27] which provides favorable interstitials ites for the Na + insertion/extraction. [12] More importantly,a st he bottleneck issue for the performance of SIBs, the development of promising cathode materials is even more difficult yet critical, where more efforts should be devoted.…”