Growth of Ru‐Modified Co3O4 Nanosheets on Carbon Textiles toward Flexible and Efficient Cathodes for Flexible Li–O2 Batteries

Liu, Qingchao; Xu, Ji‐Jing; Zhou, Chang; Xu, Dan; Yin, Yanbin; Yang, Xiao‐Yang; Liu, Tong; Jiang, Yinshan; Yan, Jun‐Min; Zhang, Xinbo

doi:10.1002/ppsc.201500193

Cited by 33 publications

(22 citation statements)

References 48 publications

(66 reference statements)

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“…In addition, Liu et al reported a flexible and efficient air cathode based on Ru nanoparticles (Ru NPs) decorated on Co 3 O 4 nanosheets (Co 3 O 4 NSs) grown on flexible CTs (CTs–Co 3 O 4 NSs–Ru cathode), and this is also classified as a non‐carbon‐based air cathode since the dominant active material is Co 3 O 4 NSs–Ru. The purpose for decorating the Ru NPs on the Co 3 O 4 NSs is to further improve the electrochemical performance of the cathode.…”

Section: Flexible Electrodesmentioning

confidence: 99%

Flexible Metal–Air Batteries: Progress, Challenges, and Perspectives

et al. 2017

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rigidity and bulk. Consequently, ideal flexible energy storage and conversion systems should be stable when undergoing frequent mechanical strain, such as bending, twisting, and other deformation modes on a long-term basis. In addition to the mechanical properties, security is paramount and cannot be ignored, especially under various deformation conditions.In response, much progress has been made to develop high-performance flexible energy storage and conversion systems in the past few years, for example, solar cells, [13][14][15][16][17][18][19][20] flexible chemical batteries, [21][22][23][24][25][26][27] and flexible supercapacitors, [28][29][30][31][32][33][34][35] to meet the aesthetic demands of flexible electronic. Among the various types of flexible energy storage and conversion systems, the lithium-ion battery is most widely used and recognized due to its relatively high energy density. Though the battery performance has been greatly improved compared with its first generation introduced by Sony, [36,37] the energy density still cannot satisfy the energy requirements of advanced electronic devices. Obviously, the development of lightweight, high-energy-density flexible energy storage and conversion systems for future flexible electronics is highly significant. Among the various energy storage and conversion systems, metal-air (metaloxygen) batteries have been identified as suitable candidates since the exhausted material (oxygen) is stored outside the battery. This endows these systems with high energy density and they could therefore meet the requirements of advanced electronic devices. [37][38][39][40] Different from the intercalation and conversion reactions of commercial lithium-ion batteries, metalair batteries are based on the oxygen-reduction reaction (ORR) and oxygen-evolution reaction (OER), and usually operate in an open system. Depending on the anode that is used, metal-air batteries can be divided into zinc-air, aluminum-air, lithiumair, potassium-air, sodium-air, and so on. The theoretical specific energies, volumetric energy densities, and nominal theoretical cell voltages of the various metal anodes in metal-air batteries are shown in Figure 1. [41][42][43][44] Due to the extreme sensitivity toward water, lithium-air, potassium-air, and sodium-air batteries are often operated nonaqueous systems, and therefore batteries can operate in a high voltage platform. Different from nonaqueous system, the magnesium, aluminum, zinc, and iron anodes are all compatible with aqueous electrolytes and have energy densities comparable to lithium-air batteries, and have also been widely investigated; here, we label them as aqueous systems. In addition, it should be noted that a hydrophobic protecting layer is also needed in the aqueous Flexible metal-air batteries, which are a promising candidate for implantation in wearable or rolling-up electronic devices, have attracted much attention recently due to their relatively high energy density. Various flexible metalair batteries have been developed recently, i...

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Section: Flexible Electrodesmentioning

confidence: 99%

Flexible Metal–Air Batteries: Progress, Challenges, and Perspectives

et al. 2017

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“…Recently, using a capacity-controlled method (1000 mAh g −1 ) at a current density of 100 mA g −1 , mesoporous Cr 2 O 3 nanotubes applied as a cathode catalyst for LOBs demonstrated excellent cyclic stability up to 50 cycles [16]. Ru-decorated Co 3 O 4 nanosheets grown on carbon textiles offered high capacity, improved round-trip efficiency, and enhanced cycling capability [26]. The Co 3 O 4 @MnO 2 /Ni nanocomposite exhibited a small discharge/charge voltage gap of about 0.76 V and a stable cycle life [27].…”

Section: Introductionmentioning

confidence: 99%

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

Liu

Zhao

et al. 2017

Nano-Micro Lett.

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Rechargeable lithium–oxygen batteries have been considered as a promising energy storage technology because of their ultra-high theoretical energy densities which are comparable to gasoline. In order to improve the electrochemical properties of lithium–oxygen batteries (LOBs), especially the cycling performance, a high-efficiency cathode catalyst is the most important component. Hence, we aim to demonstrate that CuCr2O4@rGO (CCO@rGO) nanocomposites, which are synthesized using a facile hydrothermal method and followed by a series of calcination processes, are an effective cathode catalyst. The obtained CCO@rGO nanocomposites which served as the cathode catalyst of the LOBs exhibited an outstanding cycling performance for over 100 cycles with a fixed capacity of 1000 mAh g−1 at a current density of 200 mA g−1. The enhanced properties were attributed to the synergistic effect between the high catalytic efficiency of the spinel-structured CCO nanoparticles, the high specific surface area, and high conductivity of the rGO. Electronic supplementary materialThe online version of this article (10.1007/s40820-017-0175-z) contains supplementary material, which is available to authorized users.

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“…For example, rechargeable Li–air batteries are emerging, and have been regarded as one of the most promising energy‐storage technologies because of their exceptionally high theoretical energy density of 3600 Wh kg −1 , which is much higher than that of even Li–S batteries . Liu et al developed a flexible and highly efficient air cathode based on carbon textiles, on which Ru‐nanoparticle‐decorated Co 3 O 4 nanosheet arrays were vertically grown. Due to the flexible properties of this cathode, a fabric‐based flexible Li–air battery was assembled, which was demonstrated to light up a red LED even under bending conditions, suggesting its great potential for future high‐energy‐density wearable electronics ( Figure a).…”

Section: Other Textile Battery Systemsmentioning

confidence: 99%

Section: Other Textile Battery Systemsmentioning

confidence: 99%

Advances in Flexible and Wearable Energy‐Storage Textiles

Liu

et al. 2018

Small Methods

138

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Considerable attention has been drawn to flexible and wearable energy‐storage devices due to the blooming of portable and wearable electronics in recent years. However, huge challenges are yet to be addressed before the need of both high flexibility and high performance can be met. With many desired features for wearable applications, textiles have become a growing research frontier where scientific views from various fields collide, sparking new ideas. Here, recent research progress in energy‐storage textiles (ESTs), in which textiles are employed to enhance either electrochemical performance or flexibility and wearability, is summarized. The research of ESTs is mainly divided into three parts, with a focus on supercapacitors, lithium‐ion batteries (LIBs), and some other representative battery systems, respectively. Electrode preparation, cell assembly, device performance, and the remaining challenges are discussed in detail, aiming to provide insights for future development.

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Growth of Ru‐Modified Co₃O₄ Nanosheets on Carbon Textiles toward Flexible and Efficient Cathodes for Flexible Li–O₂ Batteries

Cited by 33 publications

References 48 publications

Flexible Metal–Air Batteries: Progress, Challenges, and Perspectives

Flexible Metal–Air Batteries: Progress, Challenges, and Perspectives

CuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries

Advances in Flexible and Wearable Energy‐Storage Textiles

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