Lithium/sodium‐based batteries have attracted widespread attention because of their high specific capacity and excellent energy density, and have become one of the hottest research directions in ...energy storage devices. However, the stress accumulated during the continuous electrochemical cycle will cause the inevitable electrode failure, which inhibits the further improvement of battery performance. In order to eliminate/relieve the internal stress problem, a variety of battery material structures have been designed. In the design of battery material structure, the simulation technology is used to conduct battery modeling to predict the experimental results, which effectively reduces the range of parameters. For this reason, this paper first introduces the parameters that need to be considered by establishing stress model. Then, the utilization of simulation technology in the structural design of diverse battery materials is examined in this study. Finally, the future application of simulation technology in the field of energy storage is prospected. This is aimed to encourage the widespread utilization of simulation technology in the energy storage battery industry, with the goal of reducing design‐related energy consumption, enhancing experimental design feasibility, and minimizing experimentation costs.
The review introduces the parameters that need to be considered for the construction of stress models in the field of batteries, and explores the practical application of stress relief in different structures such as porous, core‐shell, and heterogeneous structures by using a synergistic approach of simulation techniques and experimental analyses.
Nitrogen-doped porous carbon plates have been prepared by simple and cost-effective pyrolysis carbonization of an easily available biomass-fallen camellia flower and followed by alkali activation. ...As-prepared nitrogen-doped porous carbon (aNPCP3) possesses a high specific surface area of 2318 m
2
g
−1
and abundant micro/meso-pores. As a result, the aNPCP3 samples have been demonstrated to be electrodes for supercapacitors, displaying a high specific capacitance of 354 F g
−1
at a current density of 0.2 A g
−1
and excellent cycling stability. Further, the aNPCP3 samples used as sulfur host materials for lithium-sulfur batteries exhibit a high capacity of 1210 mAh g
−1
and good cycling stability with a small capacity decay of about 0.1 % per cycle. Interestingly, it is found that their electrochemical performances are dependent on their specific surface area, pore structure, and heteroatom-doping content and type of carbon materials to a large extent. Cheapness, convenient resource, and good performance make these electrode materials displaying huge potential in cost-effective high-performance energy storage devices.
We have successfully constructed a new type of intercalation membrane material by covalently grafting organic tris(hydroxypropyl)phosphine (THPP) molecules onto hydroxylated multi‐walled carbon ...nanotubes (CNT‐OH) as a functional interlayer for the advanced LSBs. The as‐assembled interlayer has been demonstrated to be responsible for the fast conversion kinetics of polysulfides, the inhibition of polysulfide shuttle effect, as well as the formation of a stable solid electrolyte interphase(SEI) layer. By means of spectroscopic and electrochemical analysis, we further found THPP plays a key role in accelerating the conversion of polysulfides into low‐ordered lithium sulfides and suppressing the loss of polysulfides, thus rendering the as‐designed lithium–sulfur battery in this work a high capacity, excellent rate performance and long‐term stability. Even at low temperatures, the capacity decay rate was only 0.036 % per cycle for 1700 cycles.
The organic small molecule tris(hydroxypropyl) phosphine (THPP) grafted on hydroxylated multi‐walled carbon nanotubes (CNT‐OH) as intercalation of lithium–sulfur batteries (LSBs) has been demonstrated to accelerate the catalytic conversion, effectively restrain the shuttle effect of polysulfides and reduce the formation of lithium dendrites.
Elemental sulfur cathodes for lithium/sulfur batteries are receiving intense interest owing to their high theoretical capacity and energy density. However, they still suffer from severe capacity ...fading and moderate rate capability. Herein, we provide rational design and controllable fabrication of highly uniform flower-like hierarchical carbon nanospheres (FCNS) for sulfur accommodation for lithium/sulfur battery cathodes. The as-prepared three dimension FCNS with a size of around 200 nm seem to be assembled by petal-like carbon nanosheets with a thickness of about 4 nm, forming many mesoporous channels, which lead to their high surface area and large pore volume. With such a tailor-made structure, FCNS/sulfur composite cathodes with high sulfur-loading (81 wt%) deliver high specific capacity, long cycling life and excellent rate capability. Particularly, N-doped flower-like carbon nanospheres (NFCNS) with higher surface area (1223 m
2
g
−1
) and larger pore volume (2.33 cm
3
g
−1
) are also fabricated by treating with NH
3
and used to host sulfur in lithium-sulfur battery cathodes, exhibiting more excellent rate capability (829 mA h g
−1
at 5C) and cycling stability with a decay of 0.03% per cycle over 200 cycles at 1C. Even though the area density is improved to 2.5 mg sulfur per cm
2
, the battery still has a decay of 0.056% per cycle over 200 cycles.
Highly uniform flower-like carbon nanospheres/sulfur cathode for Li-S battery delivers excellent performance.
Rational design of hollow micro‐ and/or nano‐structured cathodes as sulfur hosts has potential for high‐performance lithium‐sulfur batteries. However, their further commercial application is hindered ...because infusing sulfur into hollow hosts is hard to control and the interactions between high loading sulfur and electrolyte are poor. Herein, we designed hierarchical porous hollow carbon nanospheres with radially inwardly aligned supporting ribs to mitigate these problems. Such a structure could aid the sulfur infusion and maximize sulfur utilization owing to the well‐ordered pore channels. This highly organized internal carbon skeleton can also enhance the electronic conductivity. The hollow carbon nanospheres with further nitrogen‐doping as the sulfur host material exhibit good capacity and excellent cycling performance (0.044 % capacity degradation per each cycle for 1000 cycles).
Innen‐Design: Eine neue Strategie für den Einschluss von Polysulfiden basiert auf dem gezielten Design der inneren Struktur hohler Kohlenstoffkugeln. Poröse N‐dotierte Kohlenstoffnanokugeln mit radialer innerer Struktur wurden durch einen einfachen und skalierbaren Ansatz hergestellt und als Schwefel‐Wirte für hochleistungsfähige Li‐Schwefel‐Batterien eingesetzt.
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•Starch size differently affected physicochemical properties and rheology of dough.•B-type starch helps forming unextractable polymeric protein and bond water.•Moderate addition (5%) ...of B-type starch improved the dough rheological properties.•A strategy was proposed to coordinately improve yield and quality in wheat breeding.
The quality traits of wheat grain ultimately determine the performance of wheat flour and dough, which is crucial to end-products. However, to combine high yield and good grain quality has been a great challenge in wheat breeding. In this study, the different sized A- and B-type starch granules were fractioned to investigate their effects on the physicochemical properties of wheat flour and rheological properties of wheat dough using three substitution levels (5, 10, and 15%). Results showed that 5% B-type starch granules addition increased the percentage of SDS-unextractable polymeric protein, optimized the dough network, and increased the bond water content, and thus improved the dough rheological properties. The addition of A-type starch granules or excessive B-type starch granules diluted and destroyed the structure of gluten, and reduced the dough strength. Therefore, a possible strategy for combining wheat quality and yield was proposed, that is, replacing protein content with B-type starch granules at a proper level, which has profound implications for wheat breeders to look at and address trade-offs between the quality and yield of wheat in future.
Highland barley has a different composition and structure to other crops. It has higher contents of total polyphenol (TPC), total flavonoid (TFC) and β-glucan, which can be supplemented to improve ...the nutrition of wheat-flour-based food. In this study, the flours of three different grain-colored highland barley varieties Beiqing 6 (BQ), Dulihuang (DLH), and Heilaoya (HLY), were added to Jimai60 (JM, a wheat variety with medium gluten) wheat flour at different substitution levels to investigate their effects on the unextractable polymeric protein (UPP) content, micro-structure, rheological properties and mixing properties of dough, and the color, texture, flavor, and in vitro digestion of Chinese steam bread (CSB). The results showed that the moderate substitution of highland barley (20%) increased the UPP%, optimized the micro-structure of gluten, and improved its rheological properties by increasing dough viscoelasticity. The CSBs made from the composite flours exhibited a similar specific volume, cohesiveness, springiness and resilience to wheat CSB, while the firmness of composite CSBs (particularly JM-HLY-20) was delayed during storage. Importantly, the addition of highland barley increased the contents of TPC, TFC and β-glucan, but decreased the in vitro starch digestibility of CSBs. A sensory evaluation showed that JM-HLY CSB was the most preferable. Taken together, highland barley can be used as a fine supplement to food products, with health-promoting properties.
Fu brick tea (FBT), a product of microbial fermentation from primary dark tea, also known as raw material tea (RMT), has been extensively studied for its functional properties. However, its potential ...as a staple food supplement for weight loss remains poorly understood. This study compared the weight loss effects of orlistat, traditional plain noodles (NN), and noodles supplemented with varying amounts of RMT (RMTN) and FBT (FBTN), with the aim to elucidate their lipid-reducing effects and underlying mechanisms. Experimental trials on high fat diet fed mice revealed significant weight loss, lipid-lowering, and hypoglycemic effects upon supplementation with orlistat, RMTN, and FBTN. Moreover, supplementation with orlistat, RMTN, and FBTN effectively restored serum and liver-related index levels, mitigating high-fat diet-induced dyslipidemia. Additionally, these supplements ameliorated liver and kidney damage by inhibiting oxidative stress and inflammatory responses. Furthermore, orlistat, RMTN, and FBTN exert their anti-obesity effects primarily by modulating genes associated with lipid metabolism and inflammatory responses and through regulation of the composition and structure of the gut microbiota. Importantly, FBTN demonstrated a significantly stronger lipid-lowering effect compared to RMTN, particularly at higher tea addition ratios. In contrast, NN supplementation exhibited minimal to no weight loss effects. Based on these findings, it could be inferred that FBT holds promise as a staple food supplement to ameliorate high-fat diet-induced obesity and its associated health conditions.
A novel 4-amino-1,8-naphthalimide-based fluorescent sensor with iminodiacetic acid as receptor, was developed and applied successfully to image Zn2+ in living cells. Under physiological pH ...conditions, it demonstrates high selectivity and sensitivity for sensing Zn2+ with about 34-fold enhancement in aqueous solution, with a characteristic emission band of 4-amino-1,8-naphthalimide with a green color centered at 550 nm.
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•A new 1,8-naphthalimide-based fluorescent Zn2+ sensor was synthesized.•High selectivity and sensitivity for sensing Zn2+•It was applied successfully to image Zn2+ in living cells.
