lithium storage
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2022 ◽  
Vol 163 ◽  
pp. 110562
Yuexian Li ◽  
Jian Song ◽  
Yelin Ji ◽  
Ximing Lu ◽  
Qinghua Tian ◽  

2022 ◽  
Vol 6 (1) ◽  
Tian Carey ◽  
Abdelnour Alhourani ◽  
Ruiyuan Tian ◽  
Shayan Seyedin ◽  
Adrees Arbab ◽  

AbstractThe scalable production of two-dimensional (2D) materials is needed to accelerate their adoption to industry. In this work, we present a low-cost in-line and enclosed process of exfoliation based on high-shear mixing to create aqueous dispersions of few-layer graphene, on a large scale with a Yw ~ 100% yield by weight and throughput of ϕ ~ 8.3 g h−1. The in-line process minimises basal plane defects compared to traditional beaker-based shear mixing which we attribute to a reduced Reynolds number, Re ~ 105. We demonstrate highly conductive graphene material with conductivities as high as σ ∼ 1.5 × 104 S m−1 leading to sheet-resistances as low as Rs ∼ 2.6 Ω □−1 (t ∼ 25 μm). The process is ideal for formulating non-toxic, biocompatible and highly concentrated (c ∼ 100 mg ml−1) inks. We utilise the graphene inks for inkjet printable conductive interconnects and lithium-ion battery anode composites that demonstrate a low-rate lithium storage capability of 370 mAh g−1, close to the theoretical capacity of graphite. Finally, we demonstrate the biocompatibility of the graphene inks with human colon cells and human umbilical vein endothelial cells at high c ∼ 1 mg ml−1 facilitating a route for the use of the graphene inks in applications that require biocompatibility at high c such as electronic textiles.

Small Science ◽  
2022 ◽  
pp. 2100105
Weilan Xu ◽  
Cheng Tang ◽  
Na Huang ◽  
Aijun Du ◽  
Minghong Wu ◽  

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 236
Jinyun Liu ◽  
Yajun Zhu ◽  
Junfei Cai ◽  
Yan Zhong ◽  
Tianli Han ◽  

Long-term stable secondary batteries are highly required. Here, we report a unique microcapsule encapsulated with metal organic foams (MOFs)-derived Co3O4 nanocages for a Li-S battery, which displays good lithium-storage properties. ZIF-67 dodecahedra are prepared at room temperature then converted to porous Co3O4 nanocages, which are infilled into microcapsules through a microfluidic technique. After loading sulfur, the Co3O4/S-infilled microcapsules are obtained, which display a specific capacity of 935 mAh g−1 after 200 cycles at 0.5C in Li-S batteries. A Coulombic efficiency of about 100% is achieved. The constructed Li-S battery possesses a high rate-performance during three rounds of cycling. Moreover, stable performance is verified under both high and low temperatures of 50 °C and −10 °C. Density functional theory calculations show that the Co3O4 dodecahedra display large binding energies with polysulfides, which are able to suppress shuttle effect of polysulfides and enable a stable electrochemical performance.

2022 ◽  
pp. 2100834
Ningning Xu ◽  
Dexing Zhao ◽  
Rui Wang ◽  
Qing Han ◽  
Yongxia Miao ◽  

2022 ◽  
pp. 2103565
Ziyun Zhao ◽  
Junwei Han ◽  
Fanqi Chen ◽  
Jing Xiao ◽  
Yufei Zhao ◽  

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