Double-shelled hollow carbon nanospheres as enclosed electrochemical reactors to enhance the lithium storage performance of silicon nanodots

Zhu, Ruiyu; Hu, Xuejiao; Chen, Kai; Dang, Jie; Wang, Xiujuan; Liu, Xiaojie; Wang, Hui

doi:10.1039/d0ta04323k

Cited by 44 publications

(27 citation statements)

References 45 publications

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“…The additional C 1 s spectrum of Co(OH)S@C was deconvoluted into CÀC/C=C, CÀO, and C=O bonds at 283.5, 285.0, and 287.5 eV, respectively (Figure S5d). 39,40 Furthermore, the two peaks at 1355 and 1595 cm À1 in the Raman spectrum of Co(OH)S@C assigned to the Dand G-bands, respectively, exhibited the presence of a low-crystalline carbonaceous material (Figure S5e). 39,41 The characteristic FTIR spectral bands around 1399 and 572/1091 cm À1 , which were in accordance with the meta-lÀOH stretching vibration mode and the metalÀS bending vibration mode, respectively, shown in Figure S5f, confirms the formation of the Co(OH)S phase in Co(OH) S@C. 32,33 Moreover, the atomic ratio of Co/OH/S in Co(OH)S@C was 1/1.6/1.2, according to the energydispersive X-ray spectroscopy (EDX) results (Figure S6).…”

Section: Resultsmentioning

confidence: 99%

Novel synthetic strategy for a nanostructured metal hydroxysulfide‐C and its initial electrochemical investigation as a new anode material for potassium‐ion batteries

Kim

Park

Kang

2021

Intl J of Energy Research

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Efforts have been made to develop highly promising electrode materials for K-ion batteries (KIBs) by exploring new compositions, stable nanostructures, and combinations of various carbonaceous materials to overcome the slow reaction dynamics of K-ion. Recently, multiple anionic anode materials, such as metal hydroxychlorides, metal hydroxycarbonates, and metal hydroxysulfides, which contain metalÀOH bonds, have caught attention as anode materials for Li-and Na-ions batteries owing to their ability to enhance the overall electrochemical kinetics by forming intrinsic electric fields at nanoscale heterointerfaces. Herein,

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Section: Resultsmentioning

confidence: 99%

Novel synthetic strategy for a nanostructured metal hydroxysulfide‐C and its initial electrochemical investigation as a new anode material for potassium‐ion batteries

Kim

Park

Kang

2021

Intl J of Energy Research

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“…Nitrogen adsorption-desorption isotherms of NPS-XAN sample exhibit type IV characteristics, indicating the existence of mesopores (pores width, 2-50 nm). [41,42] Furthermore, BET surface area, pore volume, and average pore size of NPS-XAN are given in Table S1, Supporting Information. To investigate the order and disorder structure of NPS-XAN, Raman spectroscopy is analyzed.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen‐Enriched Mesoporous Carbon Spheres as Efficient Anode Material for Long‐Cycle Li/Na‐Ion Batteries

Ali¹,

Waqas²,

Thaeem³

et al. 2022

Physica Status Solidi (a)

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Nitrogen doping with carbon material substantially enhances the electrochemical properties in lithium and sodium batteries. However, direct treating at high temperature fails to create high nitrogen content, thus limiting the morphological as well as electrochemical performances. Herein, a hydrophilic material xanthan and acid‐treated melamine are doped by a dual process of hydrothermal and carbonization, enabling high nitrogen content (28%) carbon spheres. The highly defected nanosphere structures (ID/IG = 1.14) enable the high specific surface area of 388 m2 g−1, which facilitates a large number of lithium/sodium ions and gives rise to remarkable electrochemical performances. When applied as an anode, the nitrogen‐doped porous sphere xanthan (NPS‐XAN) delivers a superior discharge capacity of 390 mAh g−1 after 1000 cycles at a current density of 1 A g−1 for lithium anode and maintains a discharge capacity of 262 mAh g−1 after 2800 cycles at 1 A g−1 for sodium anode. This work signifies superior capacity anodes for Li/Na‐ion batteries and contributes to the long‐life cycling energy application.

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“…Compared to other nanocarriers, such as liposomes, micelles, emulsions, nanospheres, or nanocapsules, organic nanospheres can provide better storage and physiological stability to protect peptide molecules. They are prepared by emulsification–evaporation, nanoprecipitation, and self-assembly method [ 105 , 127 , 128 , 129 , 130 , 131 ].…”

Section: Oral Insulin Delivery Nanosystemsmentioning

confidence: 99%

Versatile Oral Insulin Delivery Nanosystems: From Materials to Nanostructures

Wang

Ren

et al. 2022

IJMS

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Diabetes is a chronic metabolic disease characterized by lack of insulin in the body leading to failure of blood glucose regulation. Diabetes patients usually need frequent insulin injections to maintain normal blood glucose levels, which is a painful administration manner. Long-term drug injection brings great physical and psychological burden to diabetic patients. In order to improve the adaptability of patients to use insulin and reduce the pain caused by injection, the development of oral insulin formulations is currently a hot and difficult topic in the field of medicine and pharmacy. Thus, oral insulin delivery is a promising and convenient administration method to relieve the patients. However, insulin as a peptide drug is prone to be degraded by digestive enzymes. In addition, insulin has strong hydrophilicity and large molecular weight and extremely low oral bioavailability. To solve these problems in clinical practice, the oral insulin delivery nanosystems were designed and constructed by rational combination of various nanomaterials and nanotechnology. Such oral nanosystems have the advantages of strong adaptability, small size, convenient processing, long-lasting pharmaceutical activity, and drug controlled-release, so it can effectively improve the oral bioavailability and efficacy of insulin. This review summarizes the basic principles and recent progress in oral delivery nanosystems for insulin, including physiological absorption barrier of oral insulin and the development of materials to nanostructures for oral insulin delivery nanosystems.

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Double-shelled hollow carbon nanospheres as enclosed electrochemical reactors to enhance the lithium storage performance of silicon nanodots

Abstract: SiNDs@DSHC can effectively improve the lithium storage performance. Furthermore, in situ TEM was used to study the formation of SiNDs@DSHC.

Cited by 44 publications

References 45 publications

Novel synthetic strategy for a nanostructured metal hydroxysulfide‐C and its initial electrochemical investigation as a new anode material for potassium‐ion batteries

Novel synthetic strategy for a nanostructured metal hydroxysulfide‐C and its initial electrochemical investigation as a new anode material for potassium‐ion batteries

Nitrogen‐Enriched Mesoporous Carbon Spheres as Efficient Anode Material for Long‐Cycle Li/Na‐Ion Batteries

Versatile Oral Insulin Delivery Nanosystems: From Materials to Nanostructures

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