Curtin research has uncovered a series of new silver materials that possess a dynamic range of properties, which could potentially open up new avenues in solid-state batteries, anti-bacterial agents for medical use, and flexible touchscreens in smart phones.<\/p>\n
Recently published in Nature Communications<\/em>, the research was carried out by synthesising a new class of silver boranes and testing their properties using transmission electron microscopy (TEM) at Aarhus University in Denmark.<\/p>\n Lead researcher Mark Paskevicius, Australian Research Council Future Fellow in the Department of Physics and Astronomy at Curtin University, explained that it was rare to find a new multifunctional material with such a diverse range of technical applications.<\/p>\n \u201cSilver compounds share a rich history in technical applications including photography, photocatalysis, antimicrobial agents and cloud seeding,\u201d Dr Paskevicius said.<\/p>\n \u201cHowever after synthesising a new class of silver materials, we found they showed an exceptionally rapid metallic silver growth, in real time, when analysed through TEM imaging,\u201d Dr Paskevicius said.<\/p>\n \u201cThey also tested to show exceptional room temperature silver-ion conductivity, semiconductivity and structural dynamics.<\/p>\n \u201cThese interesting properties open up avenues in a wide-range of fields including photocatalysts, nanowire production and solid-state ionics.\u201d<\/p>\n Mr Paskevicius explained that the use of the materials as photocatalysts \u2013 compounds to accelerate chemical reactions by light \u2013 could have potential applications in waste-water treatment or in catalytic hydrogen production from water with sunlight.<\/p>\n \u201cThe materials were shown to be stable in water, which could lead to new options for photocatalytic water splitting,\u201d he said.<\/p>\n He continued to explain the materials may also show promise for a new method of generating metallic nanowires.<\/p>\n \u201cSilver nanowires have many applications, including as anti-bacterial agents in medical use or as part of conductive films that could be used in flexible touchscreens in smart phones.\u201d<\/p>\n He also said the materials showed promise in being used in next-generation silver-based, solid-state batteries.<\/p>\n \u201cTheir characteristic of rapid metallic growth is similar to the process we see in the battery charging and recharging process.<\/p>\n \u201cSilver is an expensive material, and is also quite heavy, but there are advantages to exploring batteries made from these new materials, noting their stability and ability to operate under high voltages.<\/p>\n \u201cMy future research in solid-state electrolytes for battery applications will focus on lighter and cheaper elements including lithium, sodium, magnesium and zinc,\u201d Dr Paskevicius said.<\/p>\n