Electrode takes after layered pastry to give eco
When it comes to alternative battery architectures that might offer improved performance, there are many exciting possibilities and one very common roadblock. Needle-like growths called dendrites form on the electrode to hamper the performance of many promising experimental batteries, but a team at the University of Texas (UT) at Austin is putting forward a solution for a particularly eco-friendly one, by leveraging a novel fabrication technique likened to layering pastries.
The technology at the center of this research is what's known as a sodium battery, and is an attractive proposition because they eschew the heavy metals like lithium and cobalt used in today's batteries. Mining of these materials is linked to environmental impacts such as pollution of water supplies and soil degradation, in addition to human rights issues associated with child labor.
Sodium, in contrast, is cheap and abundant, and promises a more environmentally friendly solution for energy storage. But efforts to bring their performance up to that of today's lithium-ion batteries have been plagued by a few issues, with the problem of dendrite formation chief among them. These tend to grow on the anode, the electrode that stores the ions in a charged battery, as the device is cycled, and can cause it to short-circuit, overheat or catch fire.
The aim is to deposit the anode material as evenly as possible, with even slight imperfections in the surface giving the dendrites the start they need to bring the whole device undone. The UT Austin researchers believe they have come up with a solution to this problem, through a composite material called sodium antimony telluride intermetallic, which serves as the anode.
This is formed by thin sheets of sodium metal, which are rolled onto an antimony telluride powder and folded over on themselves. This process is repeated over and over to form the anode material, and leads to a highly uniform distribution of sodium atoms to lessen the likelihood of dendrite formation.
“Think of making a kind of layered pastry, like spanakopita,” says study author David Mitlin, who designed the material.
(责任编辑：行业动态)
夏凤俭督导调研重大项目和重点企业复工复产工作
价格稳定供应充足 市民购买热情高
雅化集团：铆足干劲抓发展 奋力实现“开门红”
Pragmocracy Now-
市民填写献血相关表格8月22日晚，雨城区正黄时代天街广场天桥旁停靠着一辆献血车，身穿红马甲的志愿者们正向路过的市民发放无偿献血宣传手册，不少市民停下脚步，参与无偿献血。这是雅安市中心血站开启夜间献血模
...[详细]
-
“2024 创享未来”创友年会暨2023年度雅安市“创业明星”颁奖仪式举行
26日，“2024 创享未来”创友年会暨2023年度雅安市“创业明星”颁奖仪式举行，近六十名创业者与创业导师齐聚一堂，共赴“家宴”。此次活动旨在总结2023年创业服务工作成效，激励典型，展示创业风采，
...[详细]
-
万达广场人行天桥自2023年开工建设以来，进度不断加快。目前，天桥主体结构及上部雨棚等已完成建设，天桥外观效果已然呈现，工人们正忙着恢复周边道路，准备竣工验收。万达广场人行天桥建成后，可方便市民安全、
...[详细]
-
参加义诊的医护人员义诊现场本报讯2月4日，在第25个“世界癌症日”之际，雅安市人民医院四川大学华西医院雅安医院）以下简称：市人民医院）开展“整合卫生资源、医疗人人共享”主题科普宣传义诊活动。“世界癌症
...[详细]
-
NASA says Earth just had the hottest day ever recorded
In the 1800s, pioneering scientists foresaw how carbon in the air could warm Earth. By 1938, English
...[详细]
-
爱心人士给小灿送上春节礼物寒风挡不住关怀的脚步，严寒冷却不了送温暖的心。1月27日、28日，在众多爱心人士、志愿者的慷慨解囊、无私帮助下，爱心人士代表带着年货和新春问候与祝福，来到雨城区上里镇六家村，
...[详细]
-
少儿春晚录制现场主持人向市民拜年孩子们舞姿优美1月27日至28日，“龙腾虎跃闹新春雅安少年向未来”2024年雅安市第八届少儿春晚在雅安市文化艺术中心开机录制。本届少儿春晚，由雅安市融媒体中心主办，录制
...[详细]
-
9月19日，海信发布全球首款120吋可折叠激光电视L5K，创造性地以“折叠入户”的全新解决方案，让超百吋大屏轻松入户。相比传统超大屏电视入户安装动辄两三小时，甚至需要动用吊车或
...[详细]
-
Recently I had a friend over to whom I offered to audition my DIY PC speaker system. The first thing
...[详细]
-
兰家湾特大桥施工现场本报讯近日，在兰家湾特大桥施工现场，大型机械有序作业，工人们正在进行钢桁架拼装，随着机械和工人的有序运作，大桥加速朝着中心合龙。据了解，兰家湾特大桥钢桁梁施工将分两批次完成，预计今
...[详细]
