Uncover the mystery of high-performance aqueous zinc-ion batteries constructed by oxygen-doped vanadium nitride cathode: Cationic conversion reaction works

Chen, Duo; Lu, Mengjie; Wang, Boran; Chai, Ruiqing; Li, La; Cai, Dong; Yang, Hang; Liu, Bingke; Zhang, Yupu; Han, Wei

doi:10.1016/j.ensm.2020.12.001

Cited by 80 publications

(53 citation statements)

References 39 publications

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“…[18] The redox couples at about 0.89/1.05 V and 0.48/ 0.74 V represent the states transition of V 5 + /V 4 + and V 4 + /V 3 + , respectively. [19] Figure 2b shows the galvanostatic charge-discharge profiles over the cycles on the fresh V 2 O 5 /CQDs electrode at a current density of 0.1 A g À 1 . The V 2 O 5 /CQDs electrode exhibits two discharge plateaus stabilized at about 0.75 and 0.44 V during the discharge process and two charge plateaus at about 0.68 and 1.09 V during the charge process, which are consistent with CV curves.…”

Section: Resultsmentioning

confidence: 99%

Carbon Quantum Dots Promote Coupled Valence Engineering of V₂O₅ Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

et al. 2021

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Aqueous Zn-ion batteries (ZIBs) have acquired the researchers' curiosity owing to their harmlessness, cost effectiveness and high theoretical capacity of Zn anode. However, desirable cathode materials with high-capacity and high-rate are still scarce. In this work, the formation of carbon quantum dots induced vanadium pentoxide nanobelts was demonstrated via a facile one-step hydrothermal method for ZIBs. It exhibited an excellent Zn ion storage capacity of 460 mA h g À 1 at 0.1 A g À 1 , superior rate capability and stable cycling performance (above 85 % capacity retention over 1500 cycles at 4 A g À 1 ). The electrochemical kinetics and zinc ion storage mechanism were also considered. An efficient architecture-coupled valence engineering in the hybrid cathode was proposed to improve the electric conductivity, Zn ion diffusion rate, and cycling stability for ZIBs. This work may be a great motivation for further research on V 2 O 5 or other vanadium-based materials for high-performance ZIBs.

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Section: Resultsmentioning

confidence: 99%

Carbon Quantum Dots Promote Coupled Valence Engineering of V₂O₅ Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

et al. 2021

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“…In detail, carbon materials with electrical double-layer behavior possess excellent cycling stabilities and robust rate properties, but suffer from the low specific capacitance, while, conducting polymer, metal oxide, or sulfide based pseudo capacitors exhibit high specific capacitance but sustain poor cycling and rate stabilities [72][73][74][75][76][77][78][79][80]. As a result, the composites combined with both the two kinds of electrode materials could exploit their advantages to the full, thus achieving the flexible on-chip MSC with the possibility of practical application [81][82][83][84]. For example, Li et al proposed a carbon nanotube@polyaniline (PANI) hybrid materials for fabricating on-chip stretchable MSCs, which exhibit a large areal capacitance of 44.13 mF/cm 2 and offer a high power density of 0.07 mW/cm 2 at an area energy density of 0.004 mWh/cm 2 [67].…”

Section: Hybrid Electrode Materialsmentioning

confidence: 99%

Progress and Perspectives in Designing Flexible Microsupercapacitors

Liu

et al. 2021

Micromachines

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Miniaturized flexible microsupercapacitors (MSCs) that can be integrated into self-powered sensing systems, detecting networks, and implantable devices have shown great potential to perfect the stand-alone functional units owing to the robust security, continuously improved energy density, inherence high power density, and long service life. This review summarizes the recent progress made in the development of flexible MSCs and their application in integrated wearable electronics. To meet requirements for the scalable fabrication, minimization design, and easy integration of the flexible MSC, the typical assembled technologies consist of ink printing, photolithography, screen printing, laser etching, etc., are provided. Then the guidelines regarding the electrochemical performance improvement of the flexible MSC by materials design, devices construction, and electrolyte optimization are considered. The integrated prototypes of flexible MSC-powered systems, such as self-driven photodetection systems, wearable sweat monitoring units are also discussed. Finally, the future challenges and perspectives of flexible MSC are envisioned.

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“…Excluding the harmful fuel cells, capacitive-type electrode-based supercapacitors (SCs) and diffusion-type electrode-based batteries present their own merits and demerits. Alternatively, metal-ions hybrid SCs could exert the strength of high power density, security, and outstanding stability coming from SCs as well as excellent energy density derived from battery [ 6 – 8 ]. Flexible Zn-ion hybrid supercapacitors (SCs) that consist of the flexible substrate, Zn anode, functional cathode as well as gel electrolyte have garnered significant interest owing to their high specific capacity of 823 mAh g −1 , the low redox potential of − 0.76 V (vs. standard hydrogen electrode), stability, natural abundance, and non-pollution compared to other metal-ion hybrid SCs [ 9 – 11 ].…”

Section: Introductionmentioning

confidence: 99%

In-Situ Annealed Ti3C2Tx MXene Based All-Solid-State Flexible Zn-Ion Hybrid Micro Supercapacitor Array with Enhanced Stability

Liu

Jiang

et al. 2021

Nano-Micro Lett.

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Zn-ion hybrid supercapacitors (SCs) are considered as promising energy storage owing to their high energy density compared to traditional SCs. How to realize the miniaturization, patterning, and flexibility of the Zn-ion SCs without affecting the electrochemical performances has special meanings for expanding their applications in wearable integrated electronics. Ti3C2Tx cathode with outstanding conductivity, unique lamellar structure and good mechanical flexibility has been demonstrated tremendous potential in the design of Zn-ion SCs, but achieving long cycling stability and high rate stability is still big challenges. Here, we proposed a facile laser writing approach to fabricate patterned Ti3C2Tx-based Zn-ion micro-supercapacitors (MSCs), followed by the in-situ anneal treatment of the assembled MSCs to improve the long-term stability, which exhibits 80% of the capacitance retention even after 50,000 charge/discharge cycles and superior rate stability. The influence of the cathode thickness on the electrochemical performance of the MSCs is also studied. When the thickness reaches 0.851 µm the maximum areal capacitance of 72.02 mF cm−2 at scan rate of 10 mV s−1, which is 1.77 times higher than that with a thickness of 0.329 µm (35.6 mF cm−2). Moreover, the fabricated Ti3C2Tx based Zn-ion MSCs have excellent flexibility, a digital timer can be driven by the single device even under bending state, a flexible LED displayer of “TiC” logo also can be easily lighted by the MSC arrays under twisting, crimping, and winding conditions, demonstrating the scalable fabrication and application of the fabricated MSCs in portable electronics.

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Uncover the mystery of high-performance aqueous zinc-ion batteries constructed by oxygen-doped vanadium nitride cathode: Cationic conversion reaction works

Cited by 80 publications

References 39 publications

Carbon Quantum Dots Promote Coupled Valence Engineering of V₂O₅ Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

Carbon Quantum Dots Promote Coupled Valence Engineering of V₂O₅ Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

Progress and Perspectives in Designing Flexible Microsupercapacitors

In-Situ Annealed Ti3C2Tx MXene Based All-Solid-State Flexible Zn-Ion Hybrid Micro Supercapacitor Array with Enhanced Stability

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Uncover the mystery of high-performance aqueous zinc-ion batteries constructed by oxygen-doped vanadium nitride cathode: Cationic conversion reaction works

Cited by 80 publications

References 39 publications

Carbon Quantum Dots Promote Coupled Valence Engineering of V2O5 Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

Carbon Quantum Dots Promote Coupled Valence Engineering of V2O5 Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

Progress and Perspectives in Designing Flexible Microsupercapacitors

In-Situ Annealed Ti3C2Tx MXene Based All-Solid-State Flexible Zn-Ion Hybrid Micro Supercapacitor Array with Enhanced Stability

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Carbon Quantum Dots Promote Coupled Valence Engineering of V₂O₅ Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries

Carbon Quantum Dots Promote Coupled Valence Engineering of V₂O₅ Nanobelts for High‐Performance Aqueous Zinc‐Ion Batteries