Morphology-driven gas sensing by fabricated fractals: A review

• Vishal Kamathe and
• Rupali Nagar

Beilstein J. Nanotechnol. 2021, 12, 1187–1208, doi:10.3762/bjnano.12.88

• . 3D porous nanoscale hybrid SnO2/CuO foam sensors were prepared by Jeun et al. via electrochemical deposition followed by thermal oxidation [72]. These foam sensors were studied for H2S gas sensing. Figure 10a and Figure 10b show SEM images of the porous and 3D network structure of as-prepared Sn/Cu

• at 250 °C. The study shows that the SnO2/CuO nanoscale hybrid foam sensor outperforms the porous 3D network structure, mainly due to larger surface area, the formation of p–n junctions, and the sulfurization of CuO on metallic conductors. The foam sensor also showed a response to 20 ppm of hydrogen

A novel all-fiber-based LiFePO₄/Li₄Ti₅O₁₂ battery with self-standing nanofiber membrane electrodes

• Li-li Chen,
• Hua Yang,
• Mao-xiang Jing,
• Chong Han,
• Fei Chen,
• Xin-yu Hu,
• Wei-yong Yuan,
• Shan-shan Yao and
• Xiang-qian Shen

Beilstein J. Nanotechnol. 2019, 10, 2229–2237, doi:10.3762/bjnano.10.215

• attributed to the high electronic and ionic conductivity provided by the 3D network structure of the self-standing electrodes. This design and preparation method for all-fiber-based lithium-ion batteries provides a novel strategy for the development of high-performance flexible batteries. Keywords: 3D

• grains in the fibers. SEM images of LiFePO4 and Li5Ti4O12 nanofiber membranes are shown in Figure 3. It can be seen that the fiber membranes after heat treatment exhibit a 3D network structure, which is the reason for the high flexibility of the electrode. The high-magnification SEM images show uniform

• keep the 3D network structure after many cycles. TO summarize, the high rate and good cycling performance are mainly attributed to the high electronic and ionic conductivity of the free-standing electrodes with a stable three-dimensional network structure as shown in Figure 15, in which the high

TiO₂/GO-coated functional separator to suppress polysulfide migration in lithium–sulfur batteries

• Ning Liu,
• Lu Wang,
• Taizhe Tan,
• Yan Zhao and
• Yongguang Zhang

Beilstein J. Nanotechnol. 2019, 10, 1726–1736, doi:10.3762/bjnano.10.168

• . Conclusion In summary, a lightweight TiO2/GO coating, applied as an interlayer for Li/S batteries, has been prepared by using a simple method. The hierarchically porous TiO2 nanoparticles are tightly wrapped in GO sheets and formed a 3D network structure, which can capture the polysulfides by physical and

Nanostructure-induced performance degradation of WO₃·nH₂O for energy conversion and storage devices

• Zhenyin Hai,
• Mohammad Karbalaei Akbari,
• Zihan Wei,
• Danfeng Cui,
• Chenyang Xue,
• Hongyan Xu,
• Philippe M. Heynderickx,
• Francis Verpoort and
• Serge Zhuiykov

Beilstein J. Nanotechnol. 2018, 9, 2845–2854, doi:10.3762/bjnano.9.265

• in a faster performance degradation, due to its weak interlayer van der Waals forces, even though it outranks the 3D network structure in terms of improved electronic properties. The structural transformation of 2D layered WO3·nH2O into 3D nanostructures is observed via ex situ Raman measurements

Ultralight super-hydrophobic carbon aerogels based on cellulose nanofibers/poly(vinyl alcohol)/graphene oxide (CNFs/PVA/GO) for highly effective oil–water separation

• Zhaoyang Xu,
• Huan Zhou,
• Sicong Tan,
• Xiangdong Jiang,
• Weibing Wu,
• Jiangtao Shi and
• Peng Chen

Beilstein J. Nanotechnol. 2018, 9, 508–519, doi:10.3762/bjnano.9.49

• facile preparation process of carbon aerogels, these materials are viable candidates for use in oil–water separation and environmental protection. Keywords: 3D network structure; carbon aerogel; cellulose nanofibers; graphene oxide; oil absorption; poly(vinyl alcohol); Introduction In recent years, oil

• environment, CNFs with a high aspect ratio and high surface area have potential for forming a 3D network structure. As a result, research on cellulose aerogels has attracted more and more attention because of its outstanding properties such as high porosity, low thermal conductivity and low density [9][10