Highly reversible Na and K metal anodes enabled by carbon paper protection

Li, Pei-Rong; Xu, Tianhui; Pan, Ding; Deng, Jun; Zha, Chenyang; Wu, Yunling; Wang, Yeyun; Li, Yanguang

doi:10.1016/j.ensm.2018.03.008

Cited by 91 publications

(59 citation statements)

References 25 publications

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“…In addition to the much better rate per formance, the NMnO 2-x @TiC/C cathode is also demonstrated with a higher energy density of 386.5 Wh kg −1 at 270 W kg −1 and 164 Wh kg −1 at high power energy density of 4050 W kg −1 (Figure S10, Supporting Information), which outperform the other reported cathodes, such as δMnO 2 (320 Wh kg −1 at 106.24 W kg −1 ), [39] todorokitetype MnO 2 (150 Wh kg −1 at 170 W kg −1 ), [40] VS 2 (123 Wh kg −1 at 32.3 W kg −1 ), [41] V 2 O 5 (237. 16 Wh kg −1 at 49 W kg −1 ), [41] ZnMn 2 O 4 (202 Wh kg −1 at 67.5 W kg −1 ), [42] H 2 V 3 O 8 (250 Wh kg −1 at 62.5 W kg −1 ), [43] V 2 O 5 @ PEDOT/CC (243.3 Wh kg −1 at 90 W kg −1 ), [44] MoS 2 (148.2 Wh kg −1 at 70.5 W kg −1 ), [45] and Na 3 V 2 (PO 4 ) 2 F 3 (148.2 Wh kg −1 at 70.5 W kg −1 ). [46] Furthermore, excellent cycling performances is achieved for the NMnO 2-x @TiC/C electrode (Figure 5e).…”

Section: Resultsmentioning

confidence: 99%

Defect Promoted Capacity and Durability of N‐MnO_2–_x Branch Arrays via Low‐Temperature NH₃ Treatment for Advanced Aqueous Zinc Ion Batteries

Zhang

Deng

Luo

et al. 2019

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Defect engineering (doping and vacancy) has emerged as a positive strategy to boost the intrinsic electrochemical reactivity and structural stability of MnO2‐based cathodes of rechargeable aqueous zinc ion batteries (RAZIBs). Currently, there is no report on the nonmetal element doped MnO2 cathode with concomitant oxygen vacancies, because of its low thermal stability with easy phase transformation from MnO2 to Mn3O4 (≥300 °C). Herein, for the first time, novel N‐doped MnO2–x (N‐MnO2–x) branch arrays with abundant oxygen vacancies fabricated by a facile low‐temperature (200 °C) NH3 treatment technology are reported. Meanwhile, to further enhance the high‐rate capability, highly conductive TiC/C nanorods are used as the core support for a N‐MnO2–x branch, forming high‐quality N‐MnO2–x@TiC/C core/branch arrays. The introduced N dopants and oxygen vacancies in MnO2 are demonstrated by synchrotron radiation technology. By virtue of an integrated conductive framework, enhanced electron density, and increased surface capacitive contribution, the designed N‐MnO2–x@TiC/C arrays are endowed with faster reaction kinetics, higher capacity (285 mAh g−1 at 0.2 A g−1) and better long‐term cycles (85.7% retention after 1000 cycles at 1 A g−1) than other MnO2‐based counterparts (55.6%). The low‐temperature defect engineering sheds light on construction of advanced cathodes for aqueous RAZIBs.

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Section: Resultsmentioning

confidence: 99%

Defect Promoted Capacity and Durability of N‐MnO_2–_x Branch Arrays via Low‐Temperature NH₃ Treatment for Advanced Aqueous Zinc Ion Batteries

Zhang

Deng

Luo

et al. 2019

Small

189

103

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“…The CMOP cathode could finally achieve good capacity retention of 81.3% after 2000 cycles, typically higher than that of CMOP cathode (12.0% after 2000 cycles) and also superior to most of the reported MnO 2 based cathodes. [15,18,21,28,40,41] Such outstanding electrochemical performances are assigned to the following: i) Cs providing 3D electronic transport channels are favorable for fast ionic motion, thus successfully solve the sluggish reaction mechanism between MnO 2 and Zn 2+ , leading to the high specific capacity and good rate capability of the CMOP electrode. ii) In situ grown MnO 2 layer is able to accelerate the accessible active materials and efficient charge transport, additionally ensuring a superb rate performance.…”

Section: Resultsmentioning

confidence: 99%

3D CNTs Networks Enable MnO₂ Cathodes with High Capacity and Superior Rate Capability for Flexible Rechargeable Zn–MnO₂ Batteries

et al. 2019

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The advancement of flexible rechargeable Zn–MnO2 batteries largely relies on directional design and fabrication of flexible cathode materials. However, the sluggish electron transfer and inferior mass diffusion rate of MnO2 cathodes hinder their application in high‐power systems. Herein, the design of flexible 3D carbon nanotube (CNT) conductive networks as excellent electron and charge transfer substrates is reported to achieve a high‐rate MnO2 cathode. With further structural protection of conductive poly(3,4‐ethylenedioxythiophene) (PEDOT), Zn2+ storage kinetics in the composite CNT/MnO2/PEDOT (denoted as CMOP) the cathode is optimized to deliver high capacity of 306.1 mAh g−1 at 1.1 A g−1 and superior rate capability of 176.8 mAh g−1 when the current density increases by tenfold (10.8 A g−1), representing a state‐of‐the‐art of current MnO2 based cathodes. Moreover, the as‐assembled quasi‐solid‐state Zn–CMOP batteries with good mechanical properties can afford a high energy density of 379.4 Wh kg−1 (17.5 mWh cm−3) and a peak power density of 17.1 kW kg−1 (0.8 W cm−3). This innovative achievement will be a critical step forward toward next‐generation quick charging electronics.

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“…To the best of our knowledge, the capacity value obtained for the V-3M-Nafion cell is the highest ever reported for a AZIB so far. [15][16][17][18][19]27,[32][33][34]42,43,[49][50][51][52][53][54][55][56][57][58] In addition, the V-3M-Nafion cell shows an average capacity of 330 mAh g À1 when it is discharged at a very high current rate of 10 A g À1 , which corresponds to 65% retention of the capacity obtained at 0.25 A g À1 .…”

Section: Electrochemical Characterization Of Zn/v 2 O 5 Cellsmentioning

confidence: 99%

“…[31] Pretreatment of the Zn surface with carbonbased materials is also found to minimize the dendrite growth. [30,32] However, such complicated procedures preclude the use of these strategies beyond the laboratory scale. Therefore, exploring practical strategies to impede the formation of Zn dendrites is indeed important despite the challenges involved.…”

Section: Introductionmentioning

confidence: 99%

Dendrite Growth Suppression by Zn²⁺‐Integrated Nafion Ionomer Membranes: Beyond Porous Separators toward Aqueous Zn/V₂O₅ Batteries with Extended Cycle Life

2019

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The dendritic/irregular growth of zinc deposits in the anode surface is often considered as a major intricacy limiting the lifespan of aqueous zinc‐ion batteries. The effect of separators on the evolution of the surface morphology of the anode/cathode is never thoroughly studied. Herein, for the first time, the efficacy of the Zn2+‐integrated Nafion ionomer membrane is demonstrated as a separator to effectively suppress the growth of irregular zinc deposits in the metallic anode of an aqueous Zn/V2O5 battery. The Zn2+‐ions coordinated with the SO3− moieties in Nafion result in a high transference number of the Zn2+ cation, all the while facilitating a high ionic conductivity. The Zn2+‐integrated Nafion membrane enables the Zn/V2O5 cell to deliver a high specific capacity of 510 mAh g−1 at a current of 0.25 A g−1, which is close to the theoretical capacity of anhydrous V2O5 (589 mAh g−1). Moreover, the same cell exhibits an excellent cycling stability of 88% retention of the initial capacity even after 1800 charge–discharge cycles, superior to that of the Zn/V2O5 cells comprising conventional porous separators.

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Highly reversible Na and K metal anodes enabled by carbon paper protection

Cited by 91 publications

References 25 publications

Defect Promoted Capacity and Durability of N‐MnO_2–_x Branch Arrays via Low‐Temperature NH₃ Treatment for Advanced Aqueous Zinc Ion Batteries

Defect Promoted Capacity and Durability of N‐MnO_2–_x Branch Arrays via Low‐Temperature NH₃ Treatment for Advanced Aqueous Zinc Ion Batteries

3D CNTs Networks Enable MnO₂ Cathodes with High Capacity and Superior Rate Capability for Flexible Rechargeable Zn–MnO₂ Batteries

Dendrite Growth Suppression by Zn²⁺‐Integrated Nafion Ionomer Membranes: Beyond Porous Separators toward Aqueous Zn/V₂O₅ Batteries with Extended Cycle Life

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Highly reversible Na and K metal anodes enabled by carbon paper protection

Cited by 91 publications

References 25 publications

Defect Promoted Capacity and Durability of N‐MnO2–x Branch Arrays via Low‐Temperature NH3 Treatment for Advanced Aqueous Zinc Ion Batteries

Defect Promoted Capacity and Durability of N‐MnO2–x Branch Arrays via Low‐Temperature NH3 Treatment for Advanced Aqueous Zinc Ion Batteries

3D CNTs Networks Enable MnO2 Cathodes with High Capacity and Superior Rate Capability for Flexible Rechargeable Zn–MnO2 Batteries

Dendrite Growth Suppression by Zn2+‐Integrated Nafion Ionomer Membranes: Beyond Porous Separators toward Aqueous Zn/V2O5 Batteries with Extended Cycle Life

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Defect Promoted Capacity and Durability of N‐MnO_2–_x Branch Arrays via Low‐Temperature NH₃ Treatment for Advanced Aqueous Zinc Ion Batteries

Defect Promoted Capacity and Durability of N‐MnO_2–_x Branch Arrays via Low‐Temperature NH₃ Treatment for Advanced Aqueous Zinc Ion Batteries

3D CNTs Networks Enable MnO₂ Cathodes with High Capacity and Superior Rate Capability for Flexible Rechargeable Zn–MnO₂ Batteries

Dendrite Growth Suppression by Zn²⁺‐Integrated Nafion Ionomer Membranes: Beyond Porous Separators toward Aqueous Zn/V₂O₅ Batteries with Extended Cycle Life