Influence of conductive carbon and MnCo₂O₄ on morphological and electrical properties of hydrogels for electrochemical energy conversion

• Sylwia Pawłowska,
• Karolina Cysewska,
• Yasamin Ziai,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6

• influence of porosity and conductive properties of these composites on the electrochemical activity of catalyst particles in OER. Elemental mapping by energy-dispersive X-ray spectroscopy (EDS) confirmed the presence of MCO particles inside the hydrogel structure (Figure 2 and Supporting Information File 1

A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion

• Sanju Tanwar,
• Aditi Sharma and
• Dhirendra Mathur

Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56

• the electrode are diffusion-controlled, and the linear relationship (R2 = 0.9674) between peak height and scan rate suggests an enhanced electrochemical activity. Electrochemical detection of malathion Using the modified working GQDs/GCE electrode as electrochemical sensor, a differential pulse

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

Near-infrared photoactive Ag-Zn-Ga-S-Se quantum dots for high-performance quantum dot-sensitized solar cells

• Roopakala Kottayi,
• Ilangovan Veerappan and
• Ramadasse Sittaramane

Beilstein J. Nanotechnol. 2022, 13, 1337–1344, doi:10.3762/bjnano.13.110

• performance studies. The fabricated QDSC have superior electrochemical activity with a photoconversion efficiency of 4.91%. Keywords: alloyed QDs; photoconversion efficiency; photovoltaic performance; quantum dots; Introduction Human life depends on various forms of energy. Approximately 13 terawatts of

• electrochemical activity. It can boost charge recombination and transport electrons readily, which contributes to the enhanced performance of the QDSC. The J–V curves of the AZGSSe/TiO2 photoanode-based QDSCs are displayed in Figure 8 and the corresponding photovoltaic parameters Jsc, Voc, and FF are 14.20 mA/cm2

Studies of probe tip materials by atomic force microscopy: a review

• Ke Xu and
• Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

• . Karg et al. [50] proposed a method that could develop the colloidal probe technique in the direction of electrochemistry. This preparation method allows the selection of many colloidal particles containing electrochemical activity as probes. The colloidal gold particles in the experiments based on this

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures

• Irena Mihailova,
• Vjaceslavs Gerbreders,
• Marina Krasovska,
• Eriks Sledevskis,
• Valdis Mizers,
• Andrejs Bulanovs and
• Andrejs Ogurcovs

Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35

• nanostructured suspension in solution. Second, nanostructures are distributed randomly during the process of deposition, which can affect the electrochemical activity of the electrode and reduce the repeatability of the experiment. Third, the obtained coatings are characterized by their low adhesion and poor

The effect of cobalt on morphology, structure, and ORR activity of electrospun carbon fibre mats in aqueous alkaline environments

• Markus Gehring,
• Tobias Kutsch,
• Osmane Camara,
• Alexandre Merlen,
• Hermann Tempel,
• Hans Kungl and
• Rüdiger-A. Eichel

Beilstein J. Nanotechnol. 2021, 12, 1173–1186, doi:10.3762/bjnano.12.87

• electrochemical activity using linear sweep voltammetry with a focus on the oxygen reduction reaction. Experimental Synthesis of carbon fibres and electrode preparation Polyacrylonitrile (PAN) (98%, MW = 150,000 g·mol−1; BOC sciences, USA) was dissolved in N,N-dimethyl formamide (DMF) to obtain 10 wt % solutions

ZnO and MXenes as electrode materials for supercapacitor devices

• Ameen Uddin Ammar,
• Ipek Deniz Yildirim,
• Feray Bakan and
• Emre Erdem

Beilstein J. Nanotechnol. 2021, 12, 49–57, doi:10.3762/bjnano.12.4

• -dimensional (1D) and 2D nanomaterials, a good electrochemical performance can be obtained [20]. Li et al. developed dodecaborate/MXene composites. Borate has strong B–B bonds and is an important photoelectric material. Due to its high optical and electrochemical activity, borate is preferred in energy storage

Comparison of fresh and aged lithium iron phosphate cathodes using a tailored electrochemical strain microscopy technique

• Matthias Simolka,
• Hanno Kaess and
• Kaspar Andreas Friedrich

Beilstein J. Nanotechnol. 2020, 11, 583–596, doi:10.3762/bjnano.11.46

• ionic concentration in the material volume under the AFM tip. The ageing of the cathode is found to be governed by a decrease of the electrochemical activity and the loss of available lithium for cycling, which can be stored in the cathode. Keywords: activity; ageing; cathode; electrochemical strain

• they attributed to a reduced electrochemical activity [42]. Yang et al. report similar findings; they used ESM to study thin film Li1.2Co0.13Ni0.13Mn0.54O2 cathodes and observed decreasing ESM amplitude after a few ESM scans. They attributed this, similar to Zhu et al., to the reduction of the

• electrochemical activity, electrochemical fatigue and degradation of the material [43]. Jesse et al. conducted ESM on thin film silicon anodes and aged them by high frequency cycling [33]. Contrary to Yang et al. and Zhu et al., they found an increase of the ESM amplitude over cycling time, which they linked to

Electrochemically derived functionalized graphene for bulk production of hydrogen peroxide

• Munaiah Yeddala,
• Pallavi Thakur,
• Anugraha A and
• Tharangattu N. Narayanan

Beilstein J. Nanotechnol. 2020, 11, 432–442, doi:10.3762/bjnano.11.34

• nature of the dopant and its position in the host lattice, it has been well reported that one can engineer the electrochemical activity of nanographitic systems and the catalytic reaction pathways [31][38][39][40]. Very recently, oxidized graphitic structures were identified for their efficacy towards

High-performance asymmetric supercapacitor made of NiMoO₄ nanorods@Co₃O₄ on a cellulose-based carbon aerogel

• Meixia Wang,
• Jing Zhang,
• Xibin Yi,
• Benxue Liu,
• Xinfu Zhao and
• Xiaochan Liu

Beilstein J. Nanotechnol. 2020, 11, 240–251, doi:10.3762/bjnano.11.18

• properties are regarded as very promising materials for pseudocapacitors [15][16]. Particularly, NiMoO4 has been widely applied in high-performance pseudocapacitors due to its enhanced electrochemical properties resulting from the high electrochemical activity of the Ni ion and the superb electrical

Design and facile synthesis of defect-rich C-MoS₂/rGO nanosheets for enhanced lithium–sulfur battery performance

• Chengxiang Tian,
• Juwei Wu,
• Zheng Ma,
• Bo Li,
• Pengcheng Li,
• Xiaotao Zu and
• Xia Xiang

Beilstein J. Nanotechnol. 2019, 10, 2251–2260, doi:10.3762/bjnano.10.217

• materials, can provide good performance at low cost [18][19][20]. In particular, MoS2 has attracted the most attention owing to the high electrochemical activity associated with the sulfur deficiencies [5]. It has been reported that MoS2 nanosheets show great performance in the hydrodesulphurization process

Tuning the performance of vanadium redox flow batteries by modifying the structural defects of the carbon felt electrode

• Ditty Dixon,
• Deepu Joseph Babu,
• Aiswarya Bhaskar,
• Hans-Michael Bruns,
• Joerg J. Schneider,
• Frieder Scheiba and
• Helmut Ehrenberg

Beilstein J. Nanotechnol. 2019, 10, 1698–1706, doi:10.3762/bjnano.10.165

• , more electrochemically active sites (edge sites) are available for the V3+/V2+ redox reaction. As far as the V5+/V4+ redox reaction (i.e., the positive redox reaction) is concerned, both pristine, as well as N2-plasma-treated carbon felts showed electrochemical activity. Compared to pristine carbon

Hierarchically structured 3D carbon nanotube electrodes for electrocatalytic applications

• Pei Wang,
• Katarzyna Kulp and
• Michael Bron

Beilstein J. Nanotechnol. 2019, 10, 1475–1487, doi:10.3762/bjnano.10.146

• cycle of each measurements is represented in Figure 10. The current response for electrochemical activity towards MOR was quantified to the Pt mass and the Pt ECSA in Figure 10a and Figure 10b, respectively, where the Pt ESCA was calculated from the COad stripping voltammograms. Figure 10 represents the

• CNTs. Pt nanoparticles were homogeneously distributed onto both primary and secondary CNTs by electrodeposition. The Pt-CNT/CNT/GC electrode exhibited increased ECSA and electrochemical activity as well as more negative onset potential for MOR compared with Pt-CNT/GC. Additionally, COad stripping

Porous N- and S-doped carbon–carbon composite electrodes by soft-templating for redox flow batteries

• Maike Schnucklake,
• László Eifert,
• Jonathan Schneider,
• Roswitha Zeis and
• Christina Roth

Beilstein J. Nanotechnol. 2019, 10, 1131–1139, doi:10.3762/bjnano.10.113

• conductivity in the acidic and corrosive electrochemical environment of the battery system. Moreover, they are comparatively inexpensive [5]. One disadvantage is their poor electrochemical activity, which makes an activation step necessary [6]. A common way to achieve higher activities is the thermal treatment

• works described heteroatom doping that should provide more active centres for the vanadium redox reactions, and hence lead to a higher electrochemical activity [14][15][16][17]. But still details of the mechanism are lacking and contradictory suggestions can be found in the literature, as to which

• activity is observed (see Figure 6a). In comparison to samples heated up to only 800 °C, the felt carbonized at 1000 °C shows a significant shift of the peak positions resulting in a lower peak separation. In the literature it is often proposed that enhanced electrochemical activity could be ascribed to

Glucose-derived carbon materials with tailored properties as electrocatalysts for the oxygen reduction reaction

• Rafael Gomes Morais,
• Natalia Rey-Raap,
• José Luís Figueiredo and
• Manuel Fernando Ribeiro Pereira

Beilstein J. Nanotechnol. 2019, 10, 1089–1102, doi:10.3762/bjnano.10.109

• beneficial for the electrochemical activity of the prepared electrocatalysts [12]. This is not observed for carbonized samples as they do not present superior textural properties, compromising some of the effects that nitrogen could have on the carbon as a catalyst. Information about the limiting current

Widening of the electroactivity potential range by composite formation – capacitive properties of TiO₂/BiVO₄/PEDOT:PSS electrodes in contact with an aqueous electrolyte

• Konrad Trzciński,
• Mariusz Szkoda,
• Andrzej P. Nowak,
• Marcin Łapiński and
• Anna Lisowska-Oleksiak

Beilstein J. Nanotechnol. 2019, 10, 483–493, doi:10.3762/bjnano.10.49

• . Capacitance values higher than 10 mF·cm−2 were maintained even after 10000 galvanostatic cycles (ic = ia = 0.5 mA·cm−2). Keywords: bismuth vanadate (BiVO4); electrochemical activity; PEDOT:PSS; supercapacitors; titania nanotubes; Introduction Energy-storage technologies and sustainable energy production are

• electrochemical response during the charge/discharge process. However, CPs suffer from a relatively narrow potential window of stability and electrochemical activity [17]. An extended potential range of electroactivity and an improvement of specific capacitance can be achieved, e.g., by the fabrication of organic

• –inorganic composites with TiO2 [18][19], organic–inorganic hybrids consisting of a conducting polymer and Prussian blue analogues [20], or composites with carbon nanomaterials [21]. Tuning of the electrochemical activity of supercapacitors can also be achieved via electrolyte modification. The addition of

Amorphous Ni_xCo_yP-supported TiO₂ nanotube arrays as an efficient hydrogen evolution reaction electrocatalyst in acidic solution

• Yong Li,
• Peng Yang,
• Bin Wang and
• Zhongqing Liu

Beilstein J. Nanotechnol. 2019, 10, 62–70, doi:10.3762/bjnano.10.6

• provide a higher conductivity in the material. Electrochemical activity The electrochemical properties of the samples are shown in Figure 6, including LSV, CV, Tafel curves, bath voltage histograms, and cycling stability characteristics. In Figure 6a, the activity of NixCoyP/TNAs is much higher than that

• electrodes in practical applications. The electrochemical activity of the NixCoyP/TNAs suffered a negligible decrease after 1000 cycles at a scan rate of 100 mV s−1 (Figure 6d). This shows a high stability of this electrode. For electrocatalytic reactions, the active site density is proportional to the

Accurate control of the covalent functionalization of single-walled carbon nanotubes for the electro-enzymatically controlled oxidation of biomolecules

• Naoual Allali,
• Veronika Urbanova,
• Mathieu Etienne,
• Xavier Devaux,
• Martine Mallet,
• Brigitte Vigolo,
• Jean-Joseph Adjizian,
• Chris P. Ewels,
• Sven Oberg,
• Alexander V. Soldatov,
• Edward McRae,
• Yves Fort,
• Manuel Dossot and
• Victor Mamane

Beilstein J. Nanotechnol. 2018, 9, 2750–2762, doi:10.3762/bjnano.9.257

• surface of the CNTs. This system can be applied to biosensing, as exemplified for glucose detection. The well-controlled and well-characterized functionalization of essentially clean SWCNTs enabled us to establish the maximum level of impurity content, below which the f-SWCNT intrinsic electrochemical

• activity is not jeopardized. Keywords: biosensing; carbon nanotubes; covalent functionalization; electrocatalysis; ferrocene; Introduction Carbon nanotubes (CNTs) have been recognized as interesting candidates for developing electrochemical sensors for almost two decades [1][2][3]. They have been used to

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

• Arpita Jana,
• Elke Scheer and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

• hybrids show improved supercapacitor performance compared to bare NiO electrodes (Figure 7) [203]. The introduction of 3D ultrathin derived graphene and Ni foam scaffolds significantly increases the electron transfer rate and also the electrochemical activity of the reversible reaction of NiII and NiIII

Carbon nanotube-wrapped Fe₂O₃ anode with improved performance for lithium-ion batteries

• Guoliang Gao,
• Yan Jin,
• Qun Zeng,
• Deyu Wang and
• Cai Shen

Beilstein J. Nanotechnol. 2017, 8, 649–656, doi:10.3762/bjnano.8.69

• previously reported results [29]. The coulombic efficiency increased to 95% in the second cycle, which continued to increase steadily in subsequence cycling indicating a good stability of the composites. In order to measure electrochemical activity and oxidation/reduction potential, cyclic voltammograms of

Characterisation of thin films of graphene–surfactant composites produced through a novel semi-automated method

• Nik J. Walch,
• Alexei Nabok,
• Frank Davis and
• Séamus P. J. Higson

Beilstein J. Nanotechnol. 2016, 7, 209–219, doi:10.3762/bjnano.7.19

• sonochemical method was carried out using a semi-automated apparatus designed specifically for the purposes of this research. In previous work [6] we manufactured graphene–surfactant complexes using the Notley method and applied them to carbon electrodes, thereby enhancing their electrochemical activity

From lithium to sodium: cell chemistry of room temperature sodium–air and sodium–sulfur batteries

• Philipp Adelhelm,
• Pascal Hartmann,
• Conrad L. Bender,
• Martin Busche,
• Christine Eufinger and
• Juergen Janek

Beilstein J. Nanotechnol. 2015, 6, 1016–1055, doi:10.3762/bjnano.6.105

• . 2.3.1.8 Electrolyte additives: The electrochemical activity of Li2O2 itself is quite poor without doubt, especially for the charge process (OER). Hence catalysis is necessary especially when aiming for experimental current densities. The results of heterogeneous catalysts until now did not fulfill the

Inorganic Janus particles for biomedical applications

• Isabel Schick,
• Steffen Lorenz,
• Dominik Gehrig,
• Stefan Tenzer,
• Wiebke Storck,
• Karl Fischer,
• Dennis Strand,
• Frédéric Laquai and
• Wolfgang Tremel

Beilstein J. Nanotechnol. 2014, 5, 2346–2362, doi:10.3762/bjnano.5.244

• solvents [2], specificity towards small molecules or larger biomolecules [3], suppression of nonspecific adsorption [4], adjustment of net electric charge [5], to electrochemical activity [6]. Although it has been shown that synthetic and natural systems share a number of similarities, the degree of

A catechol biosensor based on electrospun carbon nanofibers

• Dawei Li,
• Zengyuan Pang,
• Xiaodong Chen,
• Lei Luo,
• Yibing Cai and
• Qufu Wei

Beilstein J. Nanotechnol. 2014, 5, 346–354, doi:10.3762/bjnano.5.39

• currents corresponding to redox peaks grew linearly with the scan rates from 0.05 to 0.3 V·s−1. This indicated that the electron transfer occurred easily between the laccase–Nafion–ECNFs composite and the surface of the GC electrode and that the electrochemical activity of the whole process is surface