Reverse‐Engineering Strain in Nanocrystallites by Tracking Trimerons

Nickel, Rachel; Chi, Cheng–Chung; Ranjan, Ashok; Ouyang, Chuenhou; Freeland, J. W.; Lierop, J. van

doi:10.1002/adma.202007413

Cited by 3 publications

(1 citation statement)

References 64 publications

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“…Fascinatingly, the reverse engineering strategy presents a new perspective for reverse regulation of N content from much to less, [ 29 ] which holds several key advantages over the zero‐to‐much strategy: i) The N element is derived from its own skeletal structure without the requirement for additional N precursors and does not disrupt the continuity of the C skeletal structure; ii)The N content is highly tunable due to the fact that the preparation of N‐doped porous carbon is achieved by removing heteroatom atoms from the C framework, thereby allowing for precise regulation of desired N levels and species through manipulating operational variables (i.e., the regulation of the precursor and the subsequent treatment process). For example, N‐doped graphene materials were prepared through denitriding of g‐C 3 N 4 precursor with magnesium and zinc powder as catalysts, respectively, achieving desirable target N content (8.8–35.3 at.%).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen‐Bonded Organic Framework Derived 2D N, O Co‐Doped Carbon Nanobelt with Tunable Pseudocapacitive Contribution for Efficient Capacitive Deionization

Meng,

Liu,

Ding

et al. 2023

Small

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Defect engineering is recognized as an attractive method for modulating the electronic structure and physicochemical characteristics of carbon materials. Exploiting heteroatom‐doped porous carbon with copious active sites has attracted great attention for capacitive deionization (CDI). However, traditional methods often rely on the utilization of additional heteroatom sources and strong corrosive activators, suffering from low doping efficiency, insufficient doping level, and potential biotoxicity. Herein, hydrogen‐bonded organic frameworks (HOFs) are employed as precursors to synthesize N, O co‐doped porous carbon via a simple and green reverse defect engineering strategy, achieving controllable heavy doping of heteroatoms. The N, O co‐doping triggers significant pseudocapacitive contribution and the surface pore structure supports the formation of the electric double layer. Therefore, when HOF‐derived N, O co‐doped carbon is used as CDI electrodes, a superior salt adsorption capacity of 32.29 ± 1.42 mg g−1 and an outstanding maximum salt adsorption rate of 10.58 ± 0.46 mg g−1 min−1 at 1.6 V in 500 mg L−1 NaCl solution are achieved, which are comparable to those of state‐of‐the‐art carbonaceous electrodes. This work exemplifies the effectiveness of the reverse nitrogen‐heavy doping strategy on improving the carbon structure, shedding light on the further development of rational designed electrode materials for CDI.

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Section: Introductionmentioning

confidence: 99%

Hydrogen‐Bonded Organic Framework Derived 2D N, O Co‐Doped Carbon Nanobelt with Tunable Pseudocapacitive Contribution for Efficient Capacitive Deionization

Meng,

Liu,

Ding

et al. 2023

Small

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A Reverse‐Defect‐Engineering Strategy toward High Edge‐Nitrogen‐Doped Nanotube‐Like Carbon for High‐Capacity and Stable Sodium Ion Capture

Liang

Liu

Zhang

et al. 2022

Adv Funct Materials

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Developing high‐performance defect‐rich carbon materials with abundant accessible active sites is exceedingly vital for electrochemical water desalination, but this still remains a significant challenge. Herein, a reverse‐defect‐engineering strategy is reported to synthesize high edge‐nitrogen‐doped nanotube‐like carbon through the annealing process of protonated g‐C3N4 under H2 atmosphere. The hydrogen bonds interaction between the proton and nitrogen atoms performs a crucial role in regulating nitrogen configurations. The nitrogen‐doped carbon obtained from HCl pretreatment (HCl‐NC) reduces the proportion of graphitic N and exhibits a high ratio of pyrrolic N to pyridinic N. Thus, the resulting synergetic structure of high edge‐type N and small graphitic carbon nanodomains ensures more accessible active sites and fast charge‐transfer kinetics simultaneously, contributing to high desalination capacity (100.3 mg g−1 at 1.2 V), fast time‐average specific adsorption rate (1.7 mg g−1 min−1), low energy consumption (82.9 kJ molNaCl−1), and superior cyclic stability (no signs of performance decay after long‐term cycling). The Na+‐intercalation mechanism and structure‐response relationship of HCl‐NC are revealed by the electrochemical quartz crystal microbalance with dissipation monitoring and density functional theory calculations, respectively. This study provides a novel idea to modulate the nanotube‐like, nitrogen‐containing configurations for engineering carbon nanomaterials for advanced electrochemical applications.

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Rich oxygen vacancies mediated metal-insulator transition materials toward ultrasensitive sensing and energy conversion

Sun,

Liu,

Zhang

et al. 2024

Nano Energy

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Reverse‐Engineering Strain in Nanocrystallites by Tracking Trimerons

Cited by 3 publications

References 64 publications

Hydrogen‐Bonded Organic Framework Derived 2D N, O Co‐Doped Carbon Nanobelt with Tunable Pseudocapacitive Contribution for Efficient Capacitive Deionization

Hydrogen‐Bonded Organic Framework Derived 2D N, O Co‐Doped Carbon Nanobelt with Tunable Pseudocapacitive Contribution for Efficient Capacitive Deionization

A Reverse‐Defect‐Engineering Strategy toward High Edge‐Nitrogen‐Doped Nanotube‐Like Carbon for High‐Capacity and Stable Sodium Ion Capture

Rich oxygen vacancies mediated metal-insulator transition materials toward ultrasensitive sensing and energy conversion

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