Journal ArticleDOI
Freestanding interlayers for Li-S batteries: Design and synthesis of hierarchically porous N-doped C nanofibers comprising vanadium nitride quantum dots and MOF-derived hollow N-doped C nanocages
Rakesh Saroha,Jang Hyeok Oh,Young Hoe Seon,Yun Chan Kang,Jae Seob Lee,Do Won Jeong,Jung Sang Cho +6 more
TLDR
In this article, the authors developed hierarchically structured porous, conductive, and multifunctional N-doped carbon (N-C) nanofibers comprising homogeneously dispersed vanadium nitride quantum dots and hollow N-C nanocages as functional interlayers for advanced LSBs.Abstract:
The introduction of a functional interlayer between the cathode and anode in lithium–sulfur battery (LSB) technology results in significant improvements in electrochemical performance. Here, we developed hierarchically structured porous, conductive, and multifunctional N-doped carbon (N-C) nanofibers comprising homogeneously dispersed vanadium nitride quantum dots and hollow N-C nanocages as functional interlayers for advanced LSBs. The freestanding interlayer contains well-developed long-range channels and numerous interconnected hollow N-C nanocages derived from the metal–organic framework. Furthermore, the presence of a N-C framework and vanadium nitride quantum dots measuring several nanometers improves the redox reaction kinetics and provides numerous chemisorption sites for the effective trapping and reuse of lithium polysulfide. As a result, the assembled Li–S cell employing the unique nanostructured freestanding interlayer exhibits superior rate capability and stable cycling performance (decay rate of 0.02% per cycle at 0.5C) considering the high sulfur content (80 wt%) and loading (ca. 4 mg cm−2) in the sulfur electrodes. Even with an ultra-high sulfur loading of 11.0 mg cm−2, the Li–S cell delivered a stable areal capacity of 5.0 mA h cm−2 after 100 charge–discharge cycles at 0.05C. Thus, the uniquely nanostructured interlayer shows high potential for the development of advanced LSBs utilizing pure sulfur electrodes with realistic battery parameters.read more
Citations
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Nitrogen-Doped Mesoporous Carbon Promoted Chemical Adsorption of Sulfur and Fabrication of High-Areal-Capacity Sulfur Cathode with Exceptional Cycling Stability for Lithium-Sulfur Batteries
TL;DR: In this article, a mesoporous nitrogen-doped carbon (MPNC)-sulfur nanocomposite is reported as a novel cathode for advanced Li-S batteries.
Journal ArticleDOI
V2O3-decorated carbon nanofibers as a robust interlayer for long-lived, high-performance, room-temperature sodium–sulfur batteries
TL;DR: In this article , a V2O3 nanoparticledecorated carbon nanofiber interlayer was developed for room-temperature sodium-sulfur batteries (RT/NaSBs), inserted on the cathode side of the separator to inhibit the shuttling of sodium polysulfides, i.e., their migration to the sodium anode.
Journal ArticleDOI
Porous nitrogen-doped graphene nanofibers comprising metal organic framework-derived hollow and ultrafine layered double metal oxide nanocrystals as high-performance anodes for lithium-ion batteries
Chanhoon Kim,Jae Seob Lee,Rakesh Saroha,Yoon Beom Park,Yun Chan Kang,Dong-Won Kang,Sang Mun Jeong,Jung Sang Cho +7 more
TL;DR: In this article , a facile approach to synthesize multicomponent high-performance nanofibers as anodes that comprises hierarchically porous and self-supporting Ndoped reduced graphene oxide (N-doped rGO) matrix grafted with metal-organic framework (MOF)-derived hollow and ultrafine layered double metal (Ni and Co) oxide (LDO) nanocrystals [P-(Ni, Co)O/rGO NFs].
Journal ArticleDOI
MoP Quantum Dot-Modified N,P-Carbon Nanotubes as a Multifunctional Separator Coating for High-Performance Lithium-Sulfur Batteries.
Jianli Zhang,Yun-Hsiang Cheng,Haibo Chen,Yang Wang,Qiang Chen,Guangya Hou,Ming Wen,Yiping Tang +7 more
TL;DR: In this article , MoP quantum dot-modified N,P-doped hollow PPy substrates are adopted as separator modification coatings for Li-sulfur batteries.
Journal ArticleDOI
Asymmetric separator integrated with ferroelectric-BaTiO3 and mesoporous-CNT for the reutilization of soluble polysulfide in lithium-sulfur batteries
TL;DR: In this article , a mesoporous multi-walled carbon nanotubes (MWCNTs) and ferroelectric BaTiO3 (BTO) was used as a conductive scaffold and polysulfide barrier for high performance lithium-sulfur batteries.
References
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In situ click chemistry generation of cyclooxygenase-2 inhibitors
TL;DR: In situ click chemistry is used to develop COX-2 specific inhibitors with high in vivo anti-inflammatory activity, significantly higher than that of widely used selective cyclooxygenase-2 inhibitors.
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A highly ordered nanostructured carbon–sulphur cathode for lithium–sulphur batteries
TL;DR: In this paper, the authors report the feasibility to approach such capacities by creating highly ordered interwoven composites, where conductive mesoporous carbon framework precisely constrains sulphur nanofiller growth within its channels and generates essential electrical contact to the insulating sulphur.
Journal ArticleDOI
Lithium–sulphur batteries with a microporous carbon paper as a bifunctional interlayer
Su Yu-Sheng,Arumugam Manthiram +1 more
TL;DR: A simple adjustment to the traditional lithium-sulphur battery configuration is reported to achieve high capacity with a long cycle life and rapid charge rate and with a significant improvement not only in the active material utilization but also in capacity retention without involving complex synthesis or surface modification.
Journal ArticleDOI
Balancing surface adsorption and diffusion of lithium-polysulfides on nonconductive oxides for lithium-sulfur battery design.
Xinyong Tao,Jianguo Wang,Chong Liu,Haotian Wang,Hong-Bin Yao,Guangyuan Zheng,Zhi Wei Seh,Qiuxia Cai,Weiyang Li,Guangmin Zhou,Chenxi Zu,Yi Cui,Yi Cui +12 more
TL;DR: In this paper, an oxide selection method was proposed to balance the optimization between sulfide-adsorption and diffusion on the oxides, which showed that better surface diffusion leads to higher sulfide species on electrodes.
Journal ArticleDOI
Nitrogen-Doped Mesoporous Carbon Promoted Chemical Adsorption of Sulfur and Fabrication of High-Areal-Capacity Sulfur Cathode with Exceptional Cycling Stability for Lithium-Sulfur Batteries
Jiangxuan Song,Terrence Xu,Mikhail L. Gordin,Pengyu Zhu,Dongping Lv,Ying Bing Jiang,Yongsheng Chen,Yuhua Duan,Donghai Wang +8 more
TL;DR: In this article, a mesoporous nitrogen-doped carbon (MPNC)-sulfur nanocomposite is reported as a novel cathode for advanced Li-S batteries.