Amino functionalized carbon nanotubes supported CoNi@CoO–NiO core/shell nanoparticles as highly efficient bifunctional catalyst for rechargeable Zn-air batteries

Pan, Hongzhou; Cao, Yuwei; Zhang, Baoan; Han, Jiaqi; Bai, Ya Mei; Shang, Xiaonan; Jiang, Zhongqing; Tian, Xiaoning; Jiang, Zengjie

doi:10.1016/j.ijhydene.2020.09.174

Cited by 32 publications

(6 citation statements)

References 73 publications

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“…The characteristic peaks at 1541, 1261 and 660 cm −1 , due to N−H, C−N stretching vibrations, and out-of-plane NH 2 bending vibrations, respectively. 57,58 In the FTIR spectrum of MXene/ NH 2 -CNTs, characteristic peaks include strong absorption peaks of both MXene and NH 2 -CNTs, indicating the successful preparation of MXene/NH 2 -CNTs. These results further confirmed that the amide [−(C�O) NH−] functional groups exist on the surface of CNTs.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure , the MXene/NH 2 -CNTs melamine sponge was prepared by the layer-by-layer assembly method, which involves alternately immersing the melamine sponge in positively charged NH 2 -CNTs solution and negatively charged MXene solution . First, NH 2 -CNTs were dissolved in a 0.1 wt % CTAB solution to obtain a NH 2 -CNTs solution.…”

Section: Methodsmentioning

confidence: 99%

“…CNTs solution58 and negatively charged MXene solution 46. First, NH 2 -CNTs were dissolved in a 0.1 wt % CTAB solution to obtain a NH 2 -CNTs solution.…”

mentioning

confidence: 99%

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Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH₂-CNTs for Motion Monitoring and Electronic Skin

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Flexible wearable sensors to monitor human movement and for electronic skins must exhibit high sensitivity, a wide detection range, and waterproof characteristics. This work reports a flexible, highly sensitive, and waterproof sponge pressure sensor (SMCM). The sensor is made by assembling SiO2 (S), MXene (M), and NH2-CNTs (C) on the backbone of melamine sponge (M). The SMCM sensor exhibits excellent sensitivity (10.8 kPa–1), an ultra-short response/recovery time (40 ms/60 ms), a wide detection range (30 kPa), and an extremely low detection limit (4.6 Pa). Benefiting from layer-by-layer self-assembly, the sensor still exhibits excellent stability after 5000 cycles. In addition, the SMCM sensor also has excellent waterproof performance (a water contact angle of 142°), enabling it to operate unaffectedly under wet conditions. The SMCM sensor can accurately detect small body movements such as pulse and swallowing while also accurately detecting finger and elbow movements. In addition, the sensor can be designed as an array to construct an electronic skin for detecting the magnitude and distribution of external pressure. This work holds great application potential in next-generation electronic skin, fitness detection, and flexible pressure sensors.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH₂-CNTs for Motion Monitoring and Electronic Skin

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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“…Hybridizing non-noble metals or metal oxide nanoparticles with carbon-based materials is a widely used strategy to increase ORR performance since it has shown the ability to introduce additional active sites and lower catalyst resistance values . However, integration of nonprecious metals onto a carbon matrix still faces the challenge of metal dissolution, resulting in low catalytic stability, particularly in acidic conditions. , Modifying the metal compounds by wrapping them with carbon shells has been proven to reduce metal dissolution. ,,, In addition, this wrapping strategy is also beneficial in hindering the aggregation of metal nanoparticles .…”

Section: Strategies For Development Of M-n/c-based Ph-universal Orr E...mentioning

confidence: 99%

Advances and Perspective of Noble-Metal-Free Nitrogen-Doped Carbon for pH-Universal Oxygen Reduction Reaction Catalysts

et al. 2023

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With the increasing demand for diversification of renewable energy sources, the high activity and stability of electrocatalysts in all pH ranges have been highlighted as one of the future directions in electrochemical energy generation and storage systems. Noble-metal-free nitrogen-doped carbon (M-N/ C) has been explored as a substitute for the expensive platinumbased oxygen reduction reaction (ORR) electrocatalysts. However, its ORR activity remains limited to alkaline electrolytes. In acidic medium, its low activity and stability correspond to metallic site dissolution and protonation of N-functional groups, which are even worse in neutral electrolytes because of low ionic conductivity and low H + concentration. This review summarizes strategies to improve the stability and activity of M-N/C as pH-universal ORR electrocatalysts. First, the ORR mechanism focusing on active site identification for each pH condition is discussed. Four strategies, including engineering pore structure, adding carbon shell wrapping, and introducing multiple nonmetal dopants and dual metallic active sites on the carbon substrate, are then evaluated to design pHuniversal ORR electrocatalysts with distinguished activity and stability. Lastly, future perspectives are given to show the viewpoint of further development and potential applications of M-N/C electrocatalysts.

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“…As a critical cathode reaction in FCs and MABs, ORR has lately received a lot of attention. [ 21–28 ] Oxygen is abundant in air, making it an ideal oxidant for FC cathodes. However, the high bond energy (498 kJ mol −1 ) of O 2 makes it very stable, so the ORR kinetic process is extremely slow, which has become the bottleneck that restrains the overall efficiency of FCs and limits their large‐scale deployment for a long time.…”

Section: Introductionmentioning

confidence: 99%

Advanced Nonplatinum Oxygen Reduction Electrocatalysts Prepared by Low‐Temperature Plasma Technology

Qin

Tian

et al. 2022

Adv Energy and Sustain Res

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With the continuous development of technology and the increasing energy demand, it is necessary to develop new energy‐storage and conversion devices. Oxygen reduction reaction (ORR) is a key step in energy‐conversion processes and the synthesis of new materials for highly efficient ORR electrocatalyst is critical in solving the energy problems. To enhance the activity of the electrocatalysts and expose more active sites on the surface, plasma technology is utilized to modify the catalyst surface through etching, heteroatom doping, and surface functionalization. Low‐temperature plasma technology is now used extensively in the synthesis and modification of materials. With the advantages of being highly efficient, environment friendly, and affordable, the low‐temperature plasma technology holds great potential for development in the future. Herein, the synthesis and modification of nonplatinum ORR catalysts using new advances in low‐temperature plasma technology are summarized. The application and development potential of plasma surface treatment and plasma synthesis on nonplatinum ORR catalysts are discussed to provide perspectives for future research in this field.

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Amino functionalized carbon nanotubes supported CoNi@CoO–NiO core/shell nanoparticles as highly efficient bifunctional catalyst for rechargeable Zn-air batteries

Cited by 32 publications

References 73 publications

Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH₂-CNTs for Motion Monitoring and Electronic Skin

Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH₂-CNTs for Motion Monitoring and Electronic Skin

Advances and Perspective of Noble-Metal-Free Nitrogen-Doped Carbon for pH-Universal Oxygen Reduction Reaction Catalysts

Advanced Nonplatinum Oxygen Reduction Electrocatalysts Prepared by Low‐Temperature Plasma Technology

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Amino functionalized carbon nanotubes supported CoNi@CoO–NiO core/shell nanoparticles as highly efficient bifunctional catalyst for rechargeable Zn-air batteries

Cited by 32 publications

References 73 publications

Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH2-CNTs for Motion Monitoring and Electronic Skin

Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH2-CNTs for Motion Monitoring and Electronic Skin

Advances and Perspective of Noble-Metal-Free Nitrogen-Doped Carbon for pH-Universal Oxygen Reduction Reaction Catalysts

Advanced Nonplatinum Oxygen Reduction Electrocatalysts Prepared by Low‐Temperature Plasma Technology

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Product

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Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH₂-CNTs for Motion Monitoring and Electronic Skin

Waterproof Flexible Pressure Sensors Based on Electrostatic Self-Assembled MXene/NH₂-CNTs for Motion Monitoring and Electronic Skin