Hybrid Transition‐Metal Oxide and Nitride@N‐Doped Reduced Graphene Oxide Electrodes for High‐Performance, Flexible, and All‐Solid‐State Supercapacitors

Jiang, Lili; Mei, Xiaotong; Gan, Donglin; Song, Shaowei; Lei, Xiaobo; Cai, Fanggong; Wang, Yaqin; Zhang, Qinyong; Li, Xiong; Ren, Zhifeng

doi:10.1002/chem.202005096

Cited by 12 publications

(12 citation statements)

References 55 publications

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“…The R s simulated value is close to the experimental value and the fitting EIS curve is coincident with the tested (the agreement factor is 4.92 × 10 –3 ), which prove good simulation with the experimental data. In addition, the R s value is lower than those of many previously reported capacitive electrodes. ,, The EIS results of Co 3 O 4 @C-400 confirm that carbon is well coated on the oxide, providing transfer ways for electrolyte ions and getting good conductivity.…”

Section: Results and Discussionmentioning

confidence: 60%

Tuning Carbon Contents and Further Capacitances of Coordination Polymer-Derived Carbonaceous Composites by Annealing Temperatures

Yang

et al. 2022

Crystal Growth & Design

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In this article, one unusual coordination polymer [Co(bib) 1.5 (NO 3 ) 2 (CHCl 3 )] ∞ , named as CP-3-ZX, is assembled from ligand 1,4-bis(imidazol-1-yl)benzene (bib) and cobalt nitrate. In CP-3-ZX, the Co II ion is connected by bib into one-dimensional (1D) double-track ladders, which are mutually packed to form tetragonal channels with a porosity of 23.9%. Subsequently, CP-3-ZX is employed as a precursor, and a sequence of Co 3 O 4 @C composites with various carbon contents is obtained through changing the annealing temperature. A moderate amount of carbon can enlarge the Brunauer−Emmett−Teller specific surface area, enhance the conductivity, and finally augment the capacitance of the carbonaceous material. An extensive comparison reveals that Co 3 O 4 @C-400, designated by setting the calcined temperature at 400 °C, has the highest specific capacitance of 317 F g −1 because of the optimized carbon content among these Co 3 O 4 @C composites. Moreover, an asymmetric supercapacitor Co 3 O 4 @C-400//AC is fabricated using the positive electrode of Co 3 O 4 @C-400 and the negative electrode of activated carbon (AC). Co 3 O 4 @C-400//AC exhibits an energy density of 13.8 Wh kg −1 , and a retention of 82% after 5000 cycles indicates good cycling durability. Significantly, the 4 × 2 battery unit of Co 3 O 4 @C-400//AC can be utilized to run a time counter for 11 s and light a toy Christmas tree for more than 20 min. The outstanding propulsion competence proves that Co 3 O 4 @C-400 has tremendous applications in supercapacitors.

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Section: Results and Discussionmentioning

confidence: 60%

Tuning Carbon Contents and Further Capacitances of Coordination Polymer-Derived Carbonaceous Composites by Annealing Temperatures

Yang

et al. 2022

Crystal Growth & Design

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“…To further improve the conductivity and electrochemical properties of metal oxides, a series of metal compounds electrode consist with metal oxides, bimetal oxides and metal nitrides (NiCoO2 @Co3O4@Co2N, NiMoO4 @MoO3@Mo2N, and NiFe2O4 @Fe3O4@Fe2N,) were also combined with rGO to produce electrodes for flexible all-solid-state supercapacitors (Figure 12d, e and f). These work not only proved the synergistic effects of different capacitance behavior but also proved a universal designed strategy to produce hybrid materials for highperformance functional WSCs [17,134].…”

Section: Metal Compound Electrodes For Wscsmentioning

confidence: 73%

“…where I is the constant current, m is the total mass of the active materials, is the scan rate, and ∆ is the width of the voltage window [17].…”

Section: Soft Sciencementioning

confidence: 99%

“…As shown in Figure 3d, active materials with low Young's modulus and high stretchability usually possess low conductivity. Therefore, lots of studies have been committed to improving the conductivity through doping or combining materials with high conductivity [17,[38][39][40][41]. Besides, due to the direct contact with human skin, active materials with high biocompatibility are also desired, especially for implantable SCs [42][43][44].…”

Section: Required Properties Of Soft Materials For Wscsmentioning

confidence: 99%

“…PVA is the most widely used solid electrolyte due to its high structural integrity and good mechanical properties [188][189][190][191][192][193]. Moreover, the easily gelation process and the large water content absorbed in the PVA polymer matric also helps it offers proper ionic conductivity, which make it widely used in WSCs [194][195][196][197] and stretchable SCs [198,199]. Except PVA hydrogel electrolyte, poly acrlic acid (PAA) [200][201][202], nature polymers, such as gelatin [203][204][205], lignin [206,207] and cellulose [208,209], were also developed to further improve the high retention of water in the polymer matrix to make sure the ionic conductivity [185,210].…”

Section: Solid-state Electrolytes For Wscsmentioning

confidence: 99%

See 2 more Smart Citations

Soft materials for wearable supercapacitors

Jiang¹,

Liu²,

Wang³

et al. 2021

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Along with the experienced rapid progress of wearable and portable electronic devices including electrical sensors, flexible displays, and health monitors, there is an ever-growing demand for wearable power sources. Supercapacitors as a new kind of energy storage device have received considerable attention for decades due to their high-power density, excellent cycling stability and easy fabrication. To fulfill the demand of wearable power sources, wearable supercapacitors are also further developed and studied. Newly electrode materials which play a significant role in

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Recent developments and future perspectives on energy storage and conversion applications of nickel molybdates

et al. 2022

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Transition metal oxides with two different cations in the same crystal structure are considered to perform better as catalysts due to the synergistic effects causing better charge transfer and the availability of more active sites. Chemicals with molybdate anion (MoO4−) have been proven to have vast industrial importance in arenas like catalysis, supercapacitance, nuclear medicine, calorimetry, etc. In particular, nanostructured nickel molybdate (NiMoO4) is a promising entrant as an electrode substance for sophisticated power bank applications, apart from being a catalyst for chemical reactions involving energy conversion. Engineering of NiMoO4 at different scopes has been proven to cause a vast enhancement in the catalytic performance of nanometric NiMoO4 through improvement in redox reaction kinetics during the last couple of decades. This review imparts a precise thought about NiMoO4 considering all its developments in the unearthing of properties, synthesis routes, and analyzing tunability for improvement in attributes towards focused applications.

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Hybrid Transition‐Metal Oxide and Nitride@N‐Doped Reduced Graphene Oxide Electrodes for High‐Performance, Flexible, and All‐Solid‐State Supercapacitors

Cited by 12 publications

References 55 publications

Tuning Carbon Contents and Further Capacitances of Coordination Polymer-Derived Carbonaceous Composites by Annealing Temperatures

Tuning Carbon Contents and Further Capacitances of Coordination Polymer-Derived Carbonaceous Composites by Annealing Temperatures

Soft materials for wearable supercapacitors

Recent developments and future perspectives on energy storage and conversion applications of nickel molybdates

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