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Layered double hydroxide with exchangeable interlayer anions is considered as promising electro-active materials for renewable energy technologies. However, the limited exposure of active sites and poor electrical conductivity of hydroxide powder restrict its application. Herein, bifunctional integrated electrode with a 3D hierarchical carbon framework decorated by nickel iron layered double hydroxides (NiFe-LDH) is developed. Conductive carbon nanowire array is introduced not only to provide enough anchoring sites for hydroxide, but also afford continuous pathway for electron transport throughout the entire electrode. The 3D integrated architecture of NiFe-hydroxide and hierarchical carbon framework possesses several beneficial effects including large electrochemical active surfaces, fast electron/mass transport, and enhanced mechanical stability. The as-prepared electrode affords a current density of 10 mA cm-2 at a low overpotential of 269 mV for oxygen evolution reaction (OER) in 1 M KOH. It also offers excellent stability with negligible current decline even after 2000 cycles. Besides, density functional theory (DFT) calculations reveal that the (110) surface of NiFe-LDH is more active than the (003) surface for OER. Furthermore, the electrode shows excellent supercapacitor performance with a high gravimetric capacitance of 1609.6 F g-1 at a current density of 0.2 A g-1. The viability of the as-prepared bifunctional electrode will provide a potential solution of wearable electronics in the near future.
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Natural diatomite with abundant pores was used as a biotemplate for the massive production of three-dimensional (3D) porous graphene by chemical vapor deposition method. Subsequent template removal an...
In this study, we designed and fabricated Ti@Ni0.85Se electrodes with triple hierarchy architecture and studied their applications in electrocatalytic water splitting. The three-dimensional (3D) elect...
Developing efficient and earth-abundant electrocatalysts for electrochemical water splitting is greatly desired due to growing energy demands. Herein, we develop a promising hierarchical nickel-iron-c...
Here, a series of porous carbon based supercapacitor electrode materials have been synthesized by means of pyrolysis and hydrothermal methods combining with KOH activation using the biomass wastes mun...
The development of efficient and earth-abundant electrocatalysts for overall water splitting is important but still challenging. Herein, iron phosphate (FePi) electrode is synthesized using a successi...
This is a prospective observational study, consisting of 3 substudies carried out during elective neurosurgery under general anaesthesia. Each participant will take part in all 3 substudie...
To determine safety, ablative zone, technical success rate and early safety data of recently introduced cool-wet electrode in eligible patients who are indicative for radiofrequency ablati...
The RENABLATE study is a prospective, multi-center, non-randomized feasibility study to evaluate the safety and effectiveness of the investigational Celsius® ThermoCool® RD Multi-electro...
Atrial fibrillation is the most common heart rhythm disorder, and the incidence is rapidly increasing. Cardioversion using an electrical shock (DC-cardioversion) is an important treatment ...
This clinical investigation is a prospective, multicenter, single arm clinical evaluation utilizing the multi-electrode radiofrequency balloon catheter and the multi-electrode circular dia...
An electrochemical technique for measuring the current that flows in solution as a function of an applied voltage. The observed polarographic wave, resulting from the electrochemical response, depends on the way voltage is applied (linear sweep or differential pulse) and the type of electrode used. Usually a mercury drop electrode is used.
The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life.
Evolution at the molecular level of DNA sequences and proteins. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
The art and science of designing buildings and structures. More generally, it is the design of the total built environment, including town planning, urban design, and landscape architecture.
A concept, developed in 1983 under the aegis of and supported by the National Library of Medicine under the name of Integrated Academic Information Management Systems, to provide professionals in academic health sciences centers and health sciences institutions with convenient access to an integrated and comprehensive network of knowledge. It addresses a wide cross-section of users from administrators and faculty to students and clinicians and has applications to planning, clinical and managerial decision-making, teaching, and research. It provides access to various types of clinical, management, educational, etc., databases, as well as to research and bibliographic databases. In August 1992 the name was changed from Integrated Academic Information Management Systems to Integrated Advanced Information Management Systems to reflect use beyond the academic milieu.
A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example: to diagnose diseases to measure the progress or recovery from disease to confirm that a person is free from disease Clin...