binding se into nitrogen‐doped porous carbon

Surrey University finds simple route to Li

The core-shell of the ZIF was then converted into a hollow structured carbon material. Through further fine-tuning, the team from the ATI successfully produced atomic cobalt electrocatalyst, nitrogen-doped hollow porous carbon, nitrogen-doped hollow porous carbon and cobalt nanoparticles.

Facile preparation of porous carbon nanomaterials for

Besides doping N into carbon materials, the O atoms doping method is also used for the promotion of capacitive properties of the carbon materials. Nitrogen- and oxygen-enriched 3D hierarchical porous carbon fibers with a high specific surface area (2176.6 m 2 /g) and pore volume (1.272 cm 3 /g) were prepared by a template-free route, which exhibited outstanding capacitive properties.

Porous Carbon Li

1 SupportingforInformation Transformation of ZIF-8 Nanoparticles into 3D Nitrogen-Doped Hierarchically Porous Carbon Li-S Batteries Guiqiang Cao,a Da Bi,a Jingxiang Zhao,b Jing Zheng,c Zhikang Wang,a Qingxue Lai*,a, and Yanyu Liang;*,a aCollege of Materials Science and Technology, Nanjing University of Aeronautics and

Facile preparation of porous carbon nanomaterials for

Besides doping N into carbon materials, the O atoms doping method is also used for the promotion of capacitive properties of the carbon materials. Nitrogen- and oxygen-enriched 3D hierarchical porous carbon fibers with a high specific surface area (2176.6 m 2 /g) and pore volume (1.272 cm 3 /g) were prepared by a template-free route, which exhibited outstanding capacitive properties.

Porous carbon electrodes bode well for the environment

The type he is refining in his new lab is called "porous hetero-doped gradient carbon membrane". It has two major advantages: "One is the membrane form, which means that we don't need any binder to hold the carbon electrode together.

Fine

Among them, N-doping has been extensively studied due to the fact that a similar atomic radius of nitrogen as carbon makes it easier to incorporate into the graphitic lattice [10, 24]. To date, N-doped CMNs (N-CMNs) have shown great promise in biosensors, clinical diagnosis, and therapy, attributing to their intrinsic peroxidase (POD)-like activities [ 10 – 13 ].

In situ encapsulated ultrafine Pd nanoparticles in nitrogen

2021/4/1Ultrafine Pd NPs are in situ encapsulated in nitrogen-doped porous carbon. • The surface-covering carbon of Pd NPs can be removed upon H 2 O 2 treatment. The obtained Pd/NPC-H 2 O 2 (1.3 nm) show the excellent selective hydrogenation. The method could be a

Binding Se into Nitrogen

ORIGINAL ARTICLE Binding Se into nitrogen-doped porous carbon nanosheets for high-performance potassium storage Huijuan Huang1 | Xiao Luo1 | Yu Yao1 | Xuefeng Zhou1 | Yu Jiang1 | Chunli Guo2 | Jiaqin Liu3 | Xiaojun Wu1 | Yan Yu1,4 1Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of

Nitrogen

Metal–organic framework (MOF)-derived nitrogen-doped porous carbon as electrode material for supercapacitors has recently drawn much attention. However, the development of flexible electrodes composed of MOF-derived carbon is still a great challenge. Herein, nitrogen-doped porous carbon polyhedra (NC) derived from zeolitic imidazolate framework-8 (ZIF8) are assembled into flexible

Nitrogen

2018/1/3Two-dimensional (2D) porous carbon nanosheets attract great attention because of their thin sheet-like morphology, abundant pores and high specific surface area, and their potential applicability in many fields including adsorption, oxygen reduction reaction, organic transistor and energy storage. Herein, a feasible method, named self-templating, to prepare 2D nitrogen-doping hierarchically

Enhanced Electrochemical Performances of Hollow

2021/4/24The study of Ou et al. developed a nitrogen-rich porous carbon, which displayed a large discharge capacity of 1178 mAhg−1 at the 100th cycle with a current density of 0.1 Ag-1 [16]. However, an additional synthetic step for incorporating nitrogen into the carbon

Nitrogen

Abstract Nitrogen-doped hierarchical porous hollow carbon microspheres (N-HPHCS) are synthesized using melamine-formaldehyde (MF) resin as carbon and nitrogen sources, sulfonated polystyrene microspheres (SPS) as the core template, and SiO 2 nanoparticles as the mesopore forming agent. nanoparticles as the mesopore forming agent.

Electroreduction of CO2 by Ni sites on nitrogen‐doped

Compared with complicated preparation of N‐doped carbon supporters, the porous NC support shows favourable mass transfer for CO 2 electroreduction, delivering acceptable activity, selectivity. Our findings shed light on the rational design of low‐cost and efficient

Selective structure transformation for NiFe/NiFe2O4

2020/9/1A bottleneck is currently met on the very promising NiFe 2 O 4-based catalyst for oxygen evolution reaction (OER) in water splitting.Herein a significantly improved OER catalytic performance was found by selective phosphating of NiFe/NiFe 2 O 4 embedded into porous nitrogen-doped carbon nanosphere (FeNi-FeNiO/CNS), that resulted in structure evolution by transferring the low active sites

CNT Interwoven Nitrogen and Oxygen Dual

Herein, a flexible free-standing Se/carbon composite film is prepared by encapsulation of Se into a carbon nanotube (CNT) interwoven N,O dual-doped porous carbon nanosheet (SeNOPC-CNT). The 3D interconnected CNT uniformly wrapped on the N,O dual-doped porous carbon skeletons improves the flexibility and offers an interconnected conductive pathway for rapid ionic/electronic transport.

Hierarchical N

Hierarchical N- and O-doped porous carbon composites were prepared by hydrothermally assembling of silk fibers with low molecular weight phenolic resin, followed by carbonization and KOH activation process. Silk fibroin is expected to provide nitrogen and oxygen functionalities for the final composite carbon. The introduction of thin layer graphitic structures of low molecular weight phenolic

Encapsulation of SeS2 into Nitrogen

Herein, we design an advanced K-SeS 2 battery by encapsulation of SeS 2 in the nitrogen-doped free-standing porous carbon matrix (SeS 2 NCNFs). The self-supported SeS 2 NCNFs electrode achieves a high reversible capacity of 417 mAh g –1 after 1000 cycles with 85% capacity retention at 0.5 Ag 1– with nearly Coulombic efficiency.

Preparation of Nitrogen

Nitrogen-doped graphene with a nitrogen content of 7.50% showed excellent capacitive behavior and long cycle life. The first cycle specific discharge capacitance for the material was 184.5 Fg -1 when cycled at 3 Ag -1, and 12.4% losses were found after 1200 cycles in anaqueous electrolyte of 6 molL

Hierarchical porous bowl

2021/4/1The resulting product was a porous bowl-like nitrogen-doped carbon material (denoted as pBN x C-T, in which T = 500, 600, 700, 800, 900 C). Adopting the injection reduction method to load bimetal onto the carrier, the process was as follows: a 1.0 wt% CTAB aqueous solution was added to the mixed solution of PdCl 2 and HAuCl 4 3H 2 O to synthesize a CTAB stabilized AuPd nanoparticle

Electronic Supplementary Material (ESI) Polysulfides Graphene Frameworks for Multiple Confinement of Sulfur and Nitrogen

Nitrogen-doped Tubular/Porous Carbon Channels Implanted on Graphene Frameworks for Multiple Confinement of Sulfur and Polysulfides Mengdi Zhang, Chang Yu, Juan Yang, Changtai Zhao, Zheng Ling and Jieshan Qiu* Fig. S1 XRD pattern of as-made CH-G

Binding Se into nitrogen‐doped porous carbon nanosheets

In summary, we design and synthesis nitrogen‐doped porous carbon nanosheets (N‐HCNS) as an effective host to chemical binding and physical confinement Se. The obtained Se N‐HCNS shows unprecedented potassium storage performance in terms of high reversible capacity (337 mAh g −1 at 5.0 A g −1 ) and long cycle life (260 mAh g −1 at 1.0 A g −1 after 2000 cycles).

Nitrogen doped microporous carbon by ZnCl2 activation

2017/8/31Xiao K, Ding L, Chen H, Wang S, Lu X and Wang H 2016 Nitrogen-doped porous carbon derived from residuary shaddock peel: a promising and sustainable anode for high energy density asymmetric supercapacitors J. Mater. Chem. A 4 372–8 Crossref

Amorphous MoS 2 confined in nitrogen

Developing non-precious metal catalysts with high activity and stability for electrochemical hydrogen evolution reaction (HER) is of great significance in both science and technology. In this work, N-doped CMK-3, which was prepared with a casting method using SBA-15 as the hard template and ammonia as the nitrogen source, has been utilized to hold MoS2 and restrict its growth to form MoS2N

simple method to fabricate N

Another strategy to synthesize nitrogen-doped porous carbon is to treat precursors with abundant nitrogen, followed by an activation process at high temperature. By contrast, this method introduces nitrogen into the carbon skeleton and the generated functional groups are much more stable, which could show excellent cycling stability in supercapacitors.

Molecular grafting towards high

Moreover, the high-resolution C 1s spectrum (Supplementary Fig. S8c) can be fitted into three peaks at 284.6, 285.5 and 286.5 eV, individually originating from C-C, C-N and C-O, exhibiting that the carbon matrix is doped with dominant nitrogen and slight].

Enhanced Electrochemical Performances of Hollow

2021/4/24The study of Ou et al. developed a nitrogen-rich porous carbon, which displayed a large discharge capacity of 1178 mAhg−1 at the 100th cycle with a current density of 0.1 Ag-1 [16]. However, an additional synthetic step for incorporating nitrogen into the carbon

Encapsulation of SeS 2 into Nitrogen

Herein, we design an advanced K-SeS 2 battery by encapsulation of SeS 2 in the nitrogen-doped free-standing porous carbon matrix (SeS 2 NCNFs). The self-supported SeS 2 NCNFs electrode achieves a high reversible capacity of 417 mAh g -1 after 1000 cycles with 85% capacity retention at 0.5 Ag 1- with nearly Coulombic efficiency.

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