Hierarchical Three-Dimensional ZnCo<sub>2</sub>O<sub>4</sub>Nanowire Arrays/Carbon Cloth Anodes for a Novel Class of High-Performance Flexible Lithium-Ion Batteries

Liu, Bin; Zhang, Jun; Wang, Xianfu; Chen, Gui; Chen, Di; Zhou, Chongwu; Shen, Guozhen

doi:10.1021/nl300794f

Cited by 964 publications

(681 citation statements)

References 47 publications

Supporting

Mentioning

658

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the nanowire morphology minimizes the distance over, which the Na + ions have to diffuse during the redox processes and decreases the electrode polarization. [39][40][41][42] At the same time, highly crystalline MnO 2 nanowires are also sufficiently exposed for the O 2 diffusion and electron transport, greatly benefiting the ORR. Thus, owing to the urchin shape of the MnO 2 , the MGC electrode exhibits an excellent rechargeable performance.…”

Section: Fabrication Of Mgc Electrodesmentioning

confidence: 99%

Hierarchical urchin-shaped α-MnO2 on graphene-coated carbon microfibers: a binder-free electrode for rechargeable aqueous Na–air battery

et al. 2016

View full text Add to dashboard Cite

With the increasing demand of cost-effective and high-energy devices, sodium-air (Na-air) batteries have attracted immense interest due to the natural abundance of sodium in contrast to lithium. In particular, an aqueous Na-air battery has fundamental advantage over non-aqueous batteries due to the formation of highly water-soluble discharge product, which improve the overall performance of the system in terms of energy density, cyclic stability and round-trip efficiency. Despite these advantages, the rechargeability of aqueous Na-air batteries has not yet been demonstrated when using non-precious metal catalysts. In this work, we rationally synthesized a binder-free and robust electrode by directly growing urchin-shaped MnO 2 nanowires on porous reduced graphene oxide-coated carbon microfiber (MGC) mats and fabricated an aqueous Na-air cell using the MGC as an air electrode to demonstrate the rechargeability of an aqueous Na-air battery. The fabricated aqueous Na-air cell exhibited excellent rechargeability and rate capability with a low overpotential gap (0.7 V) and high round-trip efficiency (81%). We believe that our approach opens a new avenue for synthesizing robust and binder-free electrodes that can be utilized to build not only metal-air batteries but also other energy systems such as supercapacitors, metal-ion batteries and fuel cells.

show abstract

Section: Fabrication Of Mgc Electrodesmentioning

confidence: 99%

Hierarchical urchin-shaped α-MnO2 on graphene-coated carbon microfibers: a binder-free electrode for rechargeable aqueous Na–air battery

et al. 2016

View full text Add to dashboard Cite

show abstract

“…16,17 Recently, direct growth of self-supported NiCo 2 O 4 nanowires and ZnCo 2 O 4 nanowire arrays on current-collecting substrates has been shown to overcome the drawbacks of mixing active electrode materials with conductive additives and binders and to increase endurance of fast charge and discharge processes. 22,23 Furthermore, it has been reported that 3D network structures (for example, graphene networks, 7 MO/3D graphene network composites 24 and diamond/ carbon nanotubes 25 ) can provide open channels for efficient electron/ ion transport and large surface area for reactions, both of which are favorable properties for materials and devices used in electrochemical applications. In this work, we report the synthesis of 3D-networked NiCo 2 S 4 nanosheet arrays (NSAs) directly on carbon cloth and their application as an anode material in LIBs; to our knowledge, this is the first such demonstration.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional-networked NiCo2S4 nanosheet array/carbon cloth anodes for high-performance lithium-ion batteries

et al. 2015

View full text Add to dashboard Cite

We present the design and synthesis of three-dimensional (3D)-networked NiCo 2 S 4 nanosheet arrays (NSAs) grown on carbon cloth along with their novel application as anodes in lithium-ion batteries. The relatively small (~60%) volumetric expansion of NiCo 2 S 4 nanosheets during the lithiation process was confirmed by in situ transmission electron microscopy and is attributed to their mesoporous nature. The 3D network structure of NiCo 2 S 4 nanosheets offers the additional advantages of large surface area, efficient electron and ion transport capability, easy access of electrolyte to the electrode surface, sufficient void space and mechanical robustness. The fabricated electrodes exhibited outstanding lithium-storage performance including high specific capacity, excellent cycling stability and high rate of performance. A reversible capacity of~1275 mAh g − 1 was obtained at a current density of 1000 mA g − 1 , and the devices retained~1137 mAh g − 1 after 100 cycles, which is the highest value reported to date for electrodes made of metal sulfide nanostructures or their composites. Our results suggest that 3D-networked NiCo 2 S 4 NSA/carbon cloth composites are a promising material for electrodes in high-performance lithium-ion batteries. INTRODUCTIONRechargeable lithium-ion batteries (LIBs) are the most widely used electrochemical energy storage devices because of their inherent advantages including high energy density, long life span, lack of memory effect and environmental nontoxicity. 1-3 The increasing applications of LIBs in daily electronic devices-along with industry demands for further improvement in energy density, durability, rate capability and safety-have driven the development of new electrode materials and new electrode structures. [4][5][6][7] Among the great variety of anode materials studied, metal oxides (MOs) and metal sulfides ( 21 have been synthesized and offer superior electrochemical energy storage capacity compared with bulk MSs. However, the large volumetric change of MS nanostructures during electrochemical reactions leads to reduced capacity and poor cycling stability. Moreover, the necessary addition of conductive additives and binders inevitably lessens overall energy

show abstract

“…Metal oxide nanowires (8,9) and carbon nanomaterials such as carbon nanotubes (6,(10)(11)(12) and graphene paper (13) have been recently demonstrated for use in flexible LIBs. However, electron transport in these electrodes is slow because of the relatively low quality of nanomaterials (such as chemically derived graphene) and/or high junction contact resistance between them.…”

mentioning

confidence: 99%

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Chen

Ren

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

733

492

View full text Add to dashboard Cite

There is growing interest in thin, lightweight, and flexible energy storage devices to meet the special needs for next-generation, high-performance, flexible electronics. Here we report a thin, lightweight, and flexible lithium ion battery made from graphene foam, a three-dimensional, flexible, and conductive interconnected network, as a current collector, loaded with Li 4 Ti 5 O 12 and LiFePO 4 , for use as anode and cathode, respectively. No metal current collectors, conducting additives, or binders are used. The excellent electrical conductivity and pore structure of the hybrid electrodes enable rapid electron and ion transport. For example, the Li 4 Ti 5 O 12 / graphene foam electrode shows a high rate up to 200 C, equivalent to a full discharge in 18 s. Using them, we demonstrate a thin, lightweight, and flexible full lithium ion battery with a high-rate performance and energy density that can be repeatedly bent to a radius of 5 mm without structural failure and performance loss.flexible device | full battery T he development of next-generation flexible electronics (1), such as soft, portable electronic products, roll-up displays, wearable devices, implantable biomedical devices, and conformable health-monitoring electronic skin, requires power sources that are flexible (2, 3). Similar to conventional energy storage devices, flexible power sources with high capacity and rate performance that enable electronic devices to be continuously used for a long time and fully charged in a very short time are very important for applications of high-performance flexible electronics (4-7). Lithium ion batteries (LIBs) have a high capacity but usually suffer from a low charge/discharge rate compared with another important electrochemical storage device, supercapacitors. Therefore, it is highly desired to fabricate a flexible electrochemical energy storage system with a supercapacitor-like fast charge/discharge rate and battery-like high capacity. However, the fabrication of such an energy storage device remains a great challenge owing to the lack of reliable materials that combine superior electron and ion conductivity, robust mechanical flexibility, and excellent corrosion resistance in electrochemical environments.Using nano-sized materials to prepare electrodes is one of the most promising routes toward flexible batteries. Metal oxide nanowires (8, 9) and carbon nanomaterials such as carbon nanotubes (6, 10-12) and graphene paper (13) have been recently demonstrated for use in flexible LIBs. However, electron transport in these electrodes is slow because of the relatively low quality of nanomaterials (such as chemically derived graphene) and/or high junction contact resistance between them. As a consequence, only a moderate charge/discharge rate has been obtained in these flexible batteries. It is generally believed that the charge/discharge rate of a LIB depends critically on the migration rate of lithium ions and electrons through the electrolyte and bulk electrodes into active electrode materials. Strategies to inc...

show abstract

Hierarchical Three-Dimensional ZnCo₂O₄Nanowire Arrays/Carbon Cloth Anodes for a Novel Class of High-Performance Flexible Lithium-Ion Batteries

Cited by 964 publications

References 47 publications

Hierarchical urchin-shaped α-MnO2 on graphene-coated carbon microfibers: a binder-free electrode for rechargeable aqueous Na–air battery

Hierarchical urchin-shaped α-MnO2 on graphene-coated carbon microfibers: a binder-free electrode for rechargeable aqueous Na–air battery

Three-dimensional-networked NiCo2S4 nanosheet array/carbon cloth anodes for high-performance lithium-ion batteries

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Contact Info

Product

Resources

About

Hierarchical Three-Dimensional ZnCo2O4Nanowire Arrays/Carbon Cloth Anodes for a Novel Class of High-Performance Flexible Lithium-Ion Batteries

Cited by 964 publications

References 47 publications

Hierarchical urchin-shaped α-MnO2 on graphene-coated carbon microfibers: a binder-free electrode for rechargeable aqueous Na–air battery

Hierarchical urchin-shaped α-MnO2 on graphene-coated carbon microfibers: a binder-free electrode for rechargeable aqueous Na–air battery

Three-dimensional-networked NiCo2S4 nanosheet array/carbon cloth anodes for high-performance lithium-ion batteries

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Contact Info

Product

Resources

About

Hierarchical Three-Dimensional ZnCo₂O₄Nanowire Arrays/Carbon Cloth Anodes for a Novel Class of High-Performance Flexible Lithium-Ion Batteries