Cryptomelane-type MnO2/carbon nanotube hybrids as bifunctional electrode material for high capacity potassium-ion full batteries

Chong, Shaokun; Wu, Yue; Liu, Chaofeng; Chen, Yuanzhen; Guo, Shengwu; Liu, Yongning; Cao, Guozhong

doi:10.1016/j.nanoen.2018.09.072

Cited by 98 publications

(49 citation statements)

References 54 publications

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“…Besides, this flexible KIBs full cell also demonstrates a prominent durability under different current densities. As shown in Figure d, the as‐fabricated full cell affords an unprecedented cycling stability with a small capacity attenuation of 14.1% after 150 cycles at 50 mA g −1 , which apparently superior to the recently reported potassium ion full cell (Table S3, Supporting Information), such as K 0.6 CoO 2 //hard carbon (77.6% after 100 cycles), K 0.65 Fe 0.5 Mn 0.5 O 2 //hard carbon (75% after 100 cycles), K 1.75 Mn[Fe(CN) 6 ] 0.93 ·0.16H 2 O//graphite (74.8% after 60 cycles), K 3 V 2 (PO 4 ) 2 F 3 //graphite (70% after 50 cycles), K 2 C 6 O 6 //K 4 C 6 O 6 (70% after 50 cycles), K 0.3 MnO 2 //hard carbon (50% after 100 cycles), K 0.6 CoO 2 //graphite (50% after 50 cycles), KMO/CNT//KMO/CN (19.6% after 100 cycles) . Most important, the as‐assembled device is able to be bent under different states, and there is almost no change in the discharge profiles (Figure e).…”

Section: Resultsmentioning

confidence: 78%

Nitrogen and Phosphorus Codoped Vertical Graphene/Carbon Cloth as a Binder‐Free Anode for Flexible Advanced Potassium Ion Full Batteries

Qiu

Xiao²,

Liu³

et al. 2019

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and widespread use. [6,7] As an alternative, metal ion batteries, including aluminum ion batteries, [8,9] sodium ion batteries, [10,11] magnesium ion batteries, [12,13] and potassium ion batteries (KIBs) [14][15][16][17][18][19][20][21][22] have aroused much interests owing to their low cost, environmental friendliness, and high energy density. Among the metal ion batteries studied, KIBs came into spotlight recently, combining the merits such as abundant resources, cost-effective, as well as the relatively low redox potential (2.92 V vs standard hydrogen electrode (SHE)). [23][24][25][26] As a new energy storage technology, KIBs have attracted worldwide attention due to their high energy density, cost-effective, good reliability, and environmental friendliness. However, it is generally known that the radius of potassium ions is as large as 0.38 nm, which will make the insertion/ extraction difficult during the electrochemical reaction, resulting in lousy capacity, bad rate performance, and short cycle lives in KIBs. [18,27] Furthermore, using additives and metal current collectors will block the active sites, slowdown the electron/ion transport, decrease the flexibility and energy density of the whole battery. In addition, the energy density, power density, as well as cycle life of KIBs are still unsatisfactory. [17,[19][20][21] Hence, development of advanced electrode materials and design of appropriate structures for KIBs are urgently desirable but remain a great challenge.In this spirit, only within the past year have studies emerged demonstrating that the potassium could form KC 8 with graphite, and undergo reversible insertion and extraction. [27][28][29][30][31] For anode electrodes, graphite appears to be one of the most promising due to their high electronic conductivity, rational potassium storage capability, and low cost. [19,22,27,[32][33][34] Although graphite has been investigated as KIBs anode and made some achievements, the rate capability and cyclic performance are still far from satisfactory, which can be attributed the large volume change of graphite and low diffusion kinetics of potassium ion during intercalation/deintercalation. [16,27] Instead, the graphene has a single or multilayer structure, which is beneficial for alkali metal ion insertion/extraction and surface storage. [22,28,31,[35][36][37][38][39] Moreover, the wrinkle structure of graphene can accommodate volume change of charge/ discharge process to retain the structure stability of materials. [40][41][42][43][44] Furthermore, by adjusting the electronic structure, active sites and interlayer With the fast development in flexible electronic technology, power supply devices with high performance, low-cost, and flexibility are becoming more and more important. Potassium ion batteries (KIBs) have a brilliant prospect for applications benefiting from high voltage, lost cost, as well as similar electrochemistry to lithium ion batteries (LIBs). Although carbon materials have been studied as KIBs anodes, their rate capability and cycling ...

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Section: Resultsmentioning

confidence: 78%

Nitrogen and Phosphorus Codoped Vertical Graphene/Carbon Cloth as a Binder‐Free Anode for Flexible Advanced Potassium Ion Full Batteries

Qiu

Xiao²,

Liu³

et al. 2019

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120

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“…As compared to LIHCs, the research regarding PIHCs is still in its infant stage and thus calls for extensive exploration on newly favorable electrode materials, in the hope to enhance the kinetics of K + insertion/extraction so that it can match with the fast kinetics of capacitor‐style cathodes. To date, various electrode materials, such as carbonaceous materials, metal alloys, oxides, sulfides, and MXene, have been extensively studied as battery‐type anodes. Among them, carbon‐based material, thanks to the merits of abundant resources, low cost, and high conductivity, has been regarded as one of the most promising electrode materials for the practical application of PIHCs .…”

mentioning

confidence: 99%

Fast Redox Kinetics in Bi‐Heteroatom Doped 3D Porous Carbon Nanosheets for High‐Performance Hybrid Potassium‐Ion Battery Capacitors

Liu

Chen

et al. 2019

Advanced Energy Materials

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instance, lithium-ion hybrid capacitors (LIHCs) consisting of an activated carbon (AC) cathode and a prelithiated graphite anode have been successfully commercialized and widely applied in small portable electronics. [2a] Nevertheless, the limited reserves and high cost of Li resources likely hinder them from applying in large-scale energy storage devices. As a new class of hybrid capacitors, potassium-ion hybrid capacitors (PIHCs) show great potential as alternative to LIHCs due to the profusion and low cost of potassium resources. [3] In addition, the redox potential of the K + /K (−2.936 V vs standard hydrogen electrode) is quite close to that of Li + /Li (−3.040 V), indicating PIHCs can afford a considerably high working voltage and energy density. [4] Unfortunately, the relatively large radius of K + (1.38 Å) tends to behave sluggish redox reaction kinetics for most of potassium-ion batteries (PIBs) anodes.As compared to LIHCs, the research regarding PIHCs is still in its infant stage and thus calls for extensive exploration on newly favorable electrode materials, in the hope to enhance the kinetics of K + insertion/extraction so that it can match with the fast kinetics of capacitor-style cathodes. To date, various electrode materials, such as carbonaceous materials, [5] metal alloys, [6] oxides, [7] sulfides, [8] and MXene, [9] have been extensively studied as battery-type anodes. Among them, carbon-based material, thanks to the merits of abundant resources, low cost, and high conductivity, has been regarded as one of the most promising electrode materials for the practical application of PIHCs. [10] However, the implementation of carbon-based electrode material for high-performance PIBs requires high conductivity and a rather large interlayer spacing for facilitating insertion and extraction of bulky K + and improving the redox reaction Kinetics. Therefore, it still remains a grand challenge to address the major issues existed in carbon-based anodes, including limited reversible capacities, unsatisfactory cycling stability, and poor rate performance, which result from the large volume change (61% caused by KC 8 vs 10% by LiC 6 ). [5] Heteroatom-doped carbonbased materials have exhibited the enhanced electrochemical properties for potassium-ion storage due to the increased electric conductivity and more active sites for potassium-ion storage by generating extrinsic defects. [11] In comparison with nitrogen, sulfur has a relatively large size but small electronegativity, Potassium-ion hybrid capacitors (PIHCs) hold the advantages of high-energy density of batteries and high-power output of supercapacitors and thus present great promise for the next generation of electrochemical energy storage devices. One of the most crucial tasks for developing a highperformance PIHCs is to explore a favorable anode material with capability to balance the kinetics mismatch between battery-type anodes and capacitortype cathode. Herein, a reliable route for fabricating sulfur and nitrogen codoped 3D porous carbon nanosheets...

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“…In these structures, the basic structural unit MnO 6 octahedra is connected to each other by co‐angle/co‐edge, constructing chain, tunnel, layered structures with enough space accommodating foreign cations . Given this structural advantage, MnO 2 has been extensively investigated as favorable cathodes for batteries in the past several years, including Li‐ion batteries, Na‐ion batteries, K‐ion batteries, Mg‐ion batteries, and latest ZIB . Theoretically, MnO 2 can accommodate one Zn 2+ insertion per formula with a high theoretical capacity of approximately 616 mAh/g, in which the Mn 4+ is reduced to Mn 2+ .…”

Section: Manganese‐based Oxidesmentioning

confidence: 99%

“…In these structures, the basic structural unit MnO 6 octahedra is connected to each other by coangle/co-edge, constructing chain, tunnel, layered structures with enough space accommodating foreign cations. [72][73][74][75] Given this structural advantage, MnO 2 has been extensively investigated as favorable cathodes for batteries in the past several years, including Li-ion batteries, 76,77 Na-ion batteries, 78 K-ion batteries, 79 Mg-ion batteries, [80][81][82] and latest ZIB. [83][84][85][86] Figure 4A).…”

Section: Manganese Dioxidementioning

confidence: 99%

Challenges and perspectives for manganese‐based oxides for advanced aqueous zinc‐ion batteries

Zhao

Zhu

Zhang

2019

InfoMat

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Li‐ion batteries (LIBs) with excellent cycling stability and high‐energy densities have already occupied the commercial rechargeable battery market. Unfortunately, the high cost and intrinsic insecurity induced by organic electrolyte severely hinder their applications in large‐scale energy storage. In contrast, aqueous Zn‐ion batteries (ZIBs) are being developed as an ideal candidate because of their cheapness and high security. Benefiting from high operating voltage and acceptable specific capacity, recently, manganese‐based oxides with different various crystal structures have been extensively studied as cathode materials for aqueous ZIBs. This review presents research progress of manganese‐based cathodes in aqueous ZIBs, including various manganese‐based oxides and their zinc storage mechanisms. In addition, we also discuss some optimization strategies that aim at improving the electrochemical performance of manganese‐based cathodes, and the design of flexible aqueous ZIBs based on manganese‐based cathodes (MZIBs). Finally, this review summarizes some valuable research directions, which will promote the further development of aqueous MZIBs.

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Cryptomelane-type MnO2/carbon nanotube hybrids as bifunctional electrode material for high capacity potassium-ion full batteries

Cited by 98 publications

References 54 publications

Nitrogen and Phosphorus Codoped Vertical Graphene/Carbon Cloth as a Binder‐Free Anode for Flexible Advanced Potassium Ion Full Batteries

Nitrogen and Phosphorus Codoped Vertical Graphene/Carbon Cloth as a Binder‐Free Anode for Flexible Advanced Potassium Ion Full Batteries

Fast Redox Kinetics in Bi‐Heteroatom Doped 3D Porous Carbon Nanosheets for High‐Performance Hybrid Potassium‐Ion Battery Capacitors

Challenges and perspectives for manganese‐based oxides for advanced aqueous zinc‐ion batteries

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