Two-dimensional CoNi nanoparticles@S,N-doped carbon composites derived from S,N-containing Co/Ni MOFs for high performance supercapacitors

Tong, Minglei; Liu, Shengwen; Zhang, Xian; Tang, Wilson H.; Zhang, Haimin; Wang, Guozhong; Zhang, Yunxia; Zhu, Xiaoguang; Zhao, Huijun

doi:10.1039/c7ta01008g

Cited by 81 publications

(44 citation statements)

References 55 publications

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“…Therefore, substituting Pf or Sd id not change the crystal structure or lattice parameters because Sa nd Ph ad similara tomics izes. [33][34][35][36][37][38] In short, P-CoS comprised Co 2 + ,Co 3 + ,S 2À ,and P dÀ . SEM providesf urtheri nsights into the morphologies and geometrical structures of Co 3 O 4 ,C oS and P-CoS.…”

Section: Resultsmentioning

confidence: 99%

Phosphate Ion‐Functionalized CoS with Hexagonal Bipyramid Structures from a Metal–Organic Framework: Bifunctionality towards Supercapacitors and Oxygen Evolution Reaction

Jiang

Wang

et al. 2020

Chemistry A European J

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To solve energy-related environmental problems and the energy crisis, efficient electrochemical materials have been developed as alternative energy storage and conversion systems. Abundant transition metalsa nd their sulfides are attractive electrochemical materials. Herein, we report an efficient phosphorization strategy,w hich improves the overall electrochemical performance of metal sulfides. In detail, CoS hexagonal bipyramids were synthesized through simple calcination combined with in situ sulfurizationo fa cobalt-based metal-organic framework template, and then phosphate ion-functionalized CoS (P-CoS)w as prepared through ap hosphorization reaction.P-CoS exhibited outstandinge lectrochemical activity as both supercapacitor electrode and oxygene volution reaction (OER) catalyst. Supercapacitors based on CoS and P-CoS as the electrodes had high specific capacitances of 304 and 442 Fg À1 ,r espectively, and remaineds table for over 10 000 cycles at 5Ag À1 .F or OER, P-CoS showed ac urrent density of 10 mA cm À2 at an overpotentialo f3 40 mV,w ith as mall Ta fel slope. In conclusion, functionalizing CoS with phosphate ions is ap romising method fore nhancing chemical reactivity and accelerating ion and electront ransfer.

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Section: Resultsmentioning

confidence: 99%

Phosphate Ion‐Functionalized CoS with Hexagonal Bipyramid Structures from a Metal–Organic Framework: Bifunctionality towards Supercapacitors and Oxygen Evolution Reaction

Jiang

Wang

et al. 2020

Chemistry A European J

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“…The capacitance of the Na−Mn−O 550 composite is larger than many formerly reported Na−Mn−O composites (Table S1), which is further confirmed that the facile molten salt method is one of the effective approaches for the preparation of the supercapacitor electrode materials. Moreover, the specific capacitance of the both composites decreases gradually as the current density grows, which would be due to the low utilization and transport limitation of ions into the interior electroactive sites of the electrode materials . This phenomenon is an indication of a diffusion‐controlled process …”

Section: Resultsmentioning

confidence: 99%

Molten Salt Synthesis of Na‐Mn‐O Composites as Electrode Materials for High‐Performance Supercapacitors

Xuan

Tao

et al. 2019

ChemElectroChem

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Manganese (Mn) based oxide materials are regarded as one of the favorable electrode materials, exhibiting a high energy density, low-cost and environmental benignity. In this work, we focus on synthesizing hollandite NaÀ MnÀ O composites as potential supercapacitor electrode materials by a facile molten salt technique. The structure and the morphology of the NaÀ MnÀ O system were significantly influenced by the synthesis temperature. The NaÀ MnÀ O composite synthesized at 550°C (NaÀ MnÀ O 550) demonstrates a distinct structure and a mixed morphology of nanorods and nanoparticles. The NaÀ MnÀ O 550 composite exhibits the best electrochemical performance with 306.0 F/g at 0.5 A/g and maintains 80.7 % capacity after 3000 charge-discharge times at 5 A/g. The largest specific capacitance of 64.0 F/g (0.3 A/g) and high energy density of 20.0 Wh/ kg (226.1 W/kg) were achieved in the assembled asymmetric supercapacitor device based on the NaÀ MnÀ O 550 and active carbon. Moreover, a long-cycling lifetime with 92.9 % retention after 10000 cycles was performed, which holds broad prospect for practical application in high performance energy storage devices.[a] Prof.

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“…At a scan rate of 1 mV s −1 , their specific capacitances were 295 F g −1 for N-PCMPs-A and 180 F g −1 for N-PCMPs. When the scan rate increased to 50 mV s −1 , the N-PCMPs-A exhibited better capacitance retention (194…”

Section: Other Zif-derived Carbonsmentioning

confidence: 99%

“…Co 9 S 8 -containing composite with the inclusion of 2D CoNi alloys NPs into S/N-co-doped carbon nanosheets (CoNi@SNC) was fabricated from the 2D Co/Ni-MOF nanosheets [194]. The S,N-containing Co/Ni-MOFs were synthesized under mild basic condition at room temperature using mixed metal sources (CoCl 2 •6H 2 O and NiCl 2 •6H 2 O) and two different bridging linkers (tdc = thiophene-2,5-dicarboxylate, 4.4 -bpy = 4,4 -bipyridine).…”

Section: Composites Containing Carbon/metal Sulfide Composites Contaimentioning

confidence: 99%

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

Kim

Huh

2020

Materials

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Numerously different porous carbons have been prepared and used in a wide range of practical applications. Porous carbons are also ideal electrode materials for efficient energy storage devices due to their large surface areas, capacious pore spaces, and superior chemical stability compared to other porous materials. Not only the electrical double-layer capacitance (EDLC)-based charge storage but also the pseudocapacitance driven by various dopants in the carbon matrix plays a significant role in enhancing the electrochemical supercapacitive performance of porous carbons. Since the electrochemical capacitive activities are primarily based on EDLC and further enhanced by pseudocapacitance, high-surface carbons are desirable for these applications. The porosity of carbons plays a crucial role in enhancing the performance as well. We have recently witnessed that metal–organic frameworks (MOFs) could be very effective self-sacrificing templates, or precursors, for new high-surface carbons for supercapacitors, or ultracapacitors. Many MOFs can be self-sacrificing precursors for carbonaceous porous materials in a simple yet effective direct carbonization to produce porous carbons. The constituent metal ions can be either completely removed during the carbonization or transformed into valuable redox-active centers for additional faradaic reactions to enhance the electrochemical performance of carbon electrodes. Some heteroatoms of the bridging ligands and solvate molecules can be easily incorporated into carbon matrices to generate heteroatom-doped carbons with pseudocapacitive behavior and good surface wettability. We categorized these MOF-derived porous carbons into three main types: (i) pure and heteroatom-doped carbons, (ii) metallic nanoparticle-containing carbons, and (iii) carbon-based composites with other carbon-based materials or redox-active metal species. Based on these cases summarized in this review, new MOF-derived porous carbons with much enhanced capacitive performance and stability will be envisioned.

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Two-dimensional CoNi nanoparticles@S,N-doped carbon composites derived from S,N-containing Co/Ni MOFs for high performance supercapacitors

Abstract: CoNi alloy nanoparticles incorporated into S,N-doped carbon structure was obtained by pyrolysis treatment of 2D S,N-containing Co/Ni MOFs nanosheets, as electrode material exhibiting high supercapacitor performance.

Cited by 81 publications

References 55 publications

Phosphate Ion‐Functionalized CoS with Hexagonal Bipyramid Structures from a Metal–Organic Framework: Bifunctionality towards Supercapacitors and Oxygen Evolution Reaction

Phosphate Ion‐Functionalized CoS with Hexagonal Bipyramid Structures from a Metal–Organic Framework: Bifunctionality towards Supercapacitors and Oxygen Evolution Reaction

Molten Salt Synthesis of Na‐Mn‐O Composites as Electrode Materials for High‐Performance Supercapacitors

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

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