Dopamine-derived N-doped carbon decorated titanium carbide composite for enhanced supercapacitive performance

Zhao, Tongkun; Zhang, Jiakui; Du, Zehui; Qing, Guangyan; Zhou, Guoli; Wang, Jingtao

doi:10.1016/j.electacta.2017.09.144

Cited by 72 publications

(40 citation statements)

References 65 publications

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“…To meet the practical requirements of high gravimetric capacitance and long cyclic life for MXenes supercapacitors, exploiting more pseudocapacitances by increasing the active sites has been considered as a valid tactic [29]. On the one hand, a high-efficiency strategy using heteroatoms incorporation into MXene-based electrodes can promote the surface properties and enhance the electrochemical reactivity and the electrical conductivity of MXenes [30][31][32][33][34][35][36]. Rufford and co-workers synthesized nitrogen-doped Ti 3 C 2 T x supercapacitor electrode by annealing in ammonia gas [32].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

et al. 2020

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Layered two-dimensional titanium carbide (Ti3C2Tx), as an outstanding MXene member, has captured increasing attention in supercapacitor applications due to its excellent chemical and physical properties. However, the low gravimetric capacitance of Ti3C2Tx restricts its rapid development in such applications. Herein, this work demonstrates an effective and facile hydrothermal approach to synthesize nitrogen doped intercalation TiO2/TiN/Ti3C2Tx with greatly improved gravimetric capacitance and excellent cycling stability. The hexamethylenetetramine (C6H12N4) in hydrothermal environment acted as the nitrogen source and intercalants, while the Ti3C2Tx itself was the titanium source of TiO2 and TiN. We tested the optimized nitrogen doped intercalation TiO2/TiN/Ti3C2Tx electrodes in H2SO4, Li2SO4, Na2SO4, LiOH and KOH electrolytes, respectively. The electrode in H2SO4 electrolyte delivered the best electrochemical performance with high gravimetric capacitance of 361 F g−1 at 1 A g−1 and excellent cycling stability of 85.8% after 10,000 charge/discharge cycles. A systematic study of material characterization combined with the electrochemical performances disclosed that TiO2/TiN nanoparticles, the introduction of nitrogen and the NH4+ intercalation efficaciously increased the specific surface areas, which is beneficial for facilitating electrolyte ions transportation. Given the excellent performance, nitrogen doped intercalation TiO2/TiN/Ti3C2Tx bodes well as a promising pseudocapacitor electrode for energy storage applications.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

et al. 2020

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“…The high‐resolution N 1s of GTP spectrum (Figure a) can be fitted to neutral imine nitrogen (−N=, 398.6 eV), neutral benzenoid amine nitrogen (−NH−,399.4 eV) and positively charged nitrogen groups (−NH + −,401.7 eV), confirming the presence of PANI in the composite . The XPS peak of the O 1s (Figure b) can be divided into 530.1 eV (TiO 2 ), 531.4 eV (O−Ti/O−H) and 532.5 eV (O−C) . The C 1s spectrum (Figure c) can be deconvoluted into C−Ti (282.5 eV), C−C (284.7 eV), C=N/C−N (285.1 eV), and O−C=O (289.5 eV) .…”

Section: Resultsmentioning

confidence: 78%

“…The XPS spectra in Figure d showed the elemental compositions of Ti 3 C 2 T X , TP and GTP. The XPS survey spectra of Ti 3 C 2 T X displays four elements including C, O, Ti and F. After the growth of PANI on the Ti 3 C 2 T x nanosheets, an additional signal for N 1s appeared at around 400 eV, confirming the existence of nitrogen element . The high‐resolution N 1s of GTP spectrum (Figure a) can be fitted to neutral imine nitrogen (−N=, 398.6 eV), neutral benzenoid amine nitrogen (−NH−,399.4 eV) and positively charged nitrogen groups (−NH + −,401.7 eV), confirming the presence of PANI in the composite .…”

Section: Resultsmentioning

confidence: 92%

“…[32] The XPS peak of the O 1s (Figure 3b) can be divided into 530.1 eV (TiO 2 ), 531.4 eV (OÀ Ti/OÀ H) and 532.5 eV (OÀ C). [31] The C 1s spectrum (Figure 3c) can be deconvoluted into CÀ Ti (282.5 eV), CÀ C (284.7 eV), C=N/CÀ N (285.1 eV), and OÀ C=O (289.5 eV). [33] The main peak located at 284.7 eV is related to the CÀ C bonding in graphene.…”

Section: Resultsmentioning

confidence: 99%

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Two‐Dimensional Ti₃C₂T_X/Polyaniline Nanocomposite from the Decoration of Small‐Sized Graphene Nanosheets: Promoted Pseudocapacitive Electrode Performance for Supercapacitors

Wang

Lü

et al. 2019

ChemElectroChem

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The development of high capacitance, high rate capability, and stability compounded electrochemical energy storage devices is an important factor that is required to meet the challenge of energy depletion. In this work, a novel graphene‐decorated 2D Ti3C2TX/polyaniline (GTP) nanocomposite was successfully fabricated by means of in situ oxidation copolymerization of aniline monomers on the surface of Ti3C2TX nanosheets with the decoration of small‐sized chemical‐vapor‐deposited graphene nanosheets. The GTP nanocomposite shows promoted pseudocapacitive when used as a supercapacitor electrode, because the small‐sized graphene can effectively prevent aggregation of the Ti3C2TX monolayers and facilitate the uniform growth of polyaniline on the layered structural Ti3C2TX. Furthermore, the small‐sized graphene provides more ion/electrons transfer pathways, which acts like “conductive bridges” between the electrodes and the electrolyte. After assembling an asymmetric supercapacitor (ASC) device using GTP as the positive electrode and Ti3C2TX as the negative electrode, the device can operate in a voltage window up to 1.5 V in 1 M H2SO4. Most importantly, the GTP//Ti3C2TX ASC shows an outstanding electrochemical performance compared to the reported Ti3C2TX‐based devices.

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“…[156] MXene/rGO and MXene/CNT composites produced by the alternating filtration method show excellent cycling performance in MgSO 4 electrolyte, in which the gap between the composite structures after cycling is improved, increasing capacitance. [161,222] [74] The Ti 3 C 2 T x /CNT composites prepared by different methods differ slightly in performance, according to slight configuration differences in the composite.…”

Section: Wwwadvmatinterfacesdementioning

confidence: 99%

MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

Yang

Bao

Jaumaux

et al. 2019

Adv Materials Inter

229

142

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The family of 2D transition metal carbides, nitrides, and carbonitrides (collectively called MXenes) is rapidly studied since the initial synthesis of Ti3C2Tx (MXene). The surface of MXenes etched by hydrofluoric acid has hydrophilic groups (F, OH, and O), which leads the surface to be negatively charged. Consequently, the negatively charged surface can facilitate the compounding of MXenes with other positively charged materials and prevent MXenes from aggregating with some negatively charged substances, thus promoting the formation of a stable dispersion. The MXene‐based composites have better electrochemical performance than both precursors due to synergistic effects. This review elaborates and discusses the development of MXene‐based composites. It is aimed to summarize the various methods of fabricating MXene‐based composites. The applications of MXene‐based composites in batteries and supercapacitors are presented along with analysis of their excellent electrochemical performances. Finally, the authors propose the approach for further enhancing the electrochemical performances of MXene‐based composite electrode materials.

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Dopamine-derived N-doped carbon decorated titanium carbide composite for enhanced supercapacitive performance

Cited by 72 publications

References 65 publications

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

Two‐Dimensional Ti₃C₂T_X/Polyaniline Nanocomposite from the Decoration of Small‐Sized Graphene Nanosheets: Promoted Pseudocapacitive Electrode Performance for Supercapacitors

MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

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Dopamine-derived N-doped carbon decorated titanium carbide composite for enhanced supercapacitive performance

Cited by 72 publications

References 65 publications

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

Two‐Dimensional Ti3C2TX/Polyaniline Nanocomposite from the Decoration of Small‐Sized Graphene Nanosheets: Promoted Pseudocapacitive Electrode Performance for Supercapacitors

MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

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Two‐Dimensional Ti₃C₂T_X/Polyaniline Nanocomposite from the Decoration of Small‐Sized Graphene Nanosheets: Promoted Pseudocapacitive Electrode Performance for Supercapacitors