Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Wei, Qiulong; Xiong, Fangyu; Shi, Tan; Huang, Lei; Lan, Esther H.; Dunn, Bruce; Mai, Liqiang

doi:10.1002/adma.201602300

Cited by 637 publications

(382 citation statements)

References 384 publications

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“…The relative ratio of I D /I G is 0.92, indicating that Co-N x @NPC/G presents a graphite-like structure, which is beneficial for electron transfer. [33,34] The surface chemical compositions and bonding configurations of Co-N x @NPC/G were investigated by X-ray photoelectron spectroscopy (XPS) analyses. Co-N x @NPC/G exhibits hierarchical porous structure.…”

Section: Resultsmentioning

confidence: 99%

Separator Modified by Cobalt‐Embedded Carbon Nanosheets Enabling Chemisorption and Catalytic Effects of Polysulfides for High‐Energy‐Density Lithium‐Sulfur Batteries

Cheng

Pan

Chen

et al. 2019

Advanced Energy Materials

161

106

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Lithium‐sulfur (Li‐S) batteries are considered to be one of the promising next‐generation energy storage systems. Considerable progress has been achieved in sulfur composite cathodes, but high cycling stability and discharging capacity at the expense of volumetric capacity have offset their advantages. Herein, a functional separator is presented by coating cobalt‐embedded nitrogen‐doped porous carbon nanosheets and graphene on one surface of a commercial polypropylene separator. The coating layer not only suppresses the polysulfide shuttle effect through chemical affinity, but also functions as an electrocatalyst to propel catalytic conversion of intercepted polysulfides. The slurry‐bladed carbon nanotubes/sulfur cathode with 90 wt% sulfur deliver high reversible capacity of 1103 mA h g−1 and volumetric capacity of 1062 mA h cm−3 at 0.2 C, and the freestanding carbon nanofibers/sulfur cathode provides a high discharging capacity of 1190 mA h g−1 and volumetric capacity of 1136 mA h cm−3 at high sulfur content of 78 wt% and sulfur loading of 10.5 mg cm−2. The electrochemical performance is comparable with or even superior to those in the state‐of‐the‐art carbon‐based sulfur cathodes. The separator reported in this work holds great promise for the development of high‐energy‐density Li‐S batteries.

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Section: Resultsmentioning

confidence: 99%

Separator Modified by Cobalt‐Embedded Carbon Nanosheets Enabling Chemisorption and Catalytic Effects of Polysulfides for High‐Energy‐Density Lithium‐Sulfur Batteries

Cheng

Pan

Chen

et al. 2019

Advanced Energy Materials

161

106

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“…[35] The as-prepared SHC-LMNCO ( Figure 2d; Figure S2b, Supporting Information), as well as the other two specimens ( Figure S2a,c, Supporting Information), preserve the hierarchical morphologies of precursors. [36][37][38] EDS was performed to carry out the composition of SHC-LMNCO. [36][37][38] EDS was performed to carry out the composition of SHC-LMNCO.…”

Section: Structure and Morphologymentioning

confidence: 99%

3D Cube‐Maze‐Like Li‐Rich Layered Cathodes Assembled from 2D Porous Nanosheets for Enhanced Cycle Stability and Rate Capability of Lithium‐Ion Batteries

Liu

Wang

et al. 2019

Advanced Energy Materials

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cathode of LIBs. Recently, Li-rich cathode materials (LMNCO), x Li 2 MnO 3 ·(1 − x) LiTMO 2 (0 < x < 1, TM = Mn, Ni, Co, etc.), have received extensive attentions due to their promising reversible capacity (>250 mAh g −1 ), environmental benignity, and low cost. [3] Nevertheless, the sluggish diffusion of electrons and lithium ions within LMNCO results in electrode polarization and inferior rate capability. [4] It has been verified that the electrochemical performance of LMNCO is closely connected with the morphology and structure, thereby rational design and control of the formation process for LMNCO is considered to be an effective route to enhance the capacity retention and rate capability. [5][6][7][8][9] On the basis of this, extensive efforts have been devoted to develop nanometersized materials and great progresses have been achieved over the past several years, such as construction of nanoplates, [5] nanowires, [10] nanoparticles, [11] and nanorods, [12] which possess a short Li + diffusion pathway thanks to their diminished dimensions. However, severely undesired side reactions between nanoscale electrode/electrolyte are detrimental to structural stability. [13] In order to address these challenges of nanometer-sized materials, hierarchical micro/nano-materials have been developed recently. [14][15][16] Hierarchical LMNCO possessed stable framework of micro-materials can achieve the prolonged cycle life through reducing interfacial reaction with electrolytes. [16] However, individual hierarchical structure strategy may be not enough, as the rate capability and cycling stability of the hierarchical LMNCO still need to be further improved. [17,18] Recent reports have evidenced two-dimensional (2D) nanostructure owns the advantages of open electrons and ions transport path, high active surface area, and excellent structure stability by accommodating the drastic volume evolution, which makes it applicable for ultrahigh-rate and cycling-stable lithium storage. [19][20][21] In addition, 2D nanosheets often have large exposed surface areas and specific facets. [22,23] It has been reported that in LMNCO cathodes, if the surfaces are parallel to {010} facets (e.g., (010), (100), and (110) planes), perpendicular to (001) plane, the Li + diffusion kinetics will be substantially strengthened. [15,16,24,25] Consequently, the synergistic effect of the 2D nanosheets, hierarchical structure, and Li-rich oxide is a promising candidate for the cathodes of next-generation lithium-ion batteries. However, its utilization is restricted by cycling instability and inferior rate capability. To tackle these issues, three-dimensional (3D), hierarchical, cube-maze-like Li-rich cathodes assembled from two-dimensional (2D), thin nanosheets with exposed {010} active planes, are developed by a facile hydrothermal approach. Benefiting from their unique architecture, 3D cube-maze-like cathodes demonstrate a superior reversible capacity (285.3 mAh g −1 at 0.1 C, 133.4 mAh g −1 at 20.0 C) and a great cycle stability (capacity retention of ...

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“…To date, a wide variety of nanostructured materials have been designed and utilized to improve the performance of the energy storage systems [27,28]. Furthermore, in order to solve these obstacles, making vanadium oxides and carbon composites is a common strategy to improve the electrochemical proper-ties.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of coherent porous V2O3/carbon nanocomposites for high-performance lithium- and sodium-ion batteries

Yang

Wang

et al. 2017

Sci. China Mater.

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.As an anode material for lithium/sodium-ion batteries, the V 2 O 3 /carbon nanocomposites exhibit higher capacity, better rate capability and cycling stability than the V 2 O 3 nanoparticle counterparts. The enhanced electrochemical performances are attributed to the porous V 2 O 3 /carbon nanocomposites, which can allow the electrolyte penetration, shorten the ion diffusion distance and improve the electronic conductivity.

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Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Cited by 637 publications

References 384 publications

Separator Modified by Cobalt‐Embedded Carbon Nanosheets Enabling Chemisorption and Catalytic Effects of Polysulfides for High‐Energy‐Density Lithium‐Sulfur Batteries

Separator Modified by Cobalt‐Embedded Carbon Nanosheets Enabling Chemisorption and Catalytic Effects of Polysulfides for High‐Energy‐Density Lithium‐Sulfur Batteries

3D Cube‐Maze‐Like Li‐Rich Layered Cathodes Assembled from 2D Porous Nanosheets for Enhanced Cycle Stability and Rate Capability of Lithium‐Ion Batteries

Hydrothermal synthesis of coherent porous V2O3/carbon nanocomposites for high-performance lithium- and sodium-ion batteries

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