学术活动

Boron Innovation: From energy storage to nanomaterials

活动品牌 大连理工大学-学术活动
主 讲 人 黄振国 高级研究员
活动地点 物理楼322室
开始时间 2017-04-26 15:30
结束时间 2017-04-26 17:10

活动简介:

ABSTRACT

Boron, hydrogen, and nitrogen form many compounds together (denoted as BHN) that have highhydrogen capacity (weight percent). These compounds typically feature extensive intra- and/or intermolecularN−Hδ+---Hδ-−B dihydrogen interactions, which enable facile dehydrogenation.[1]We have been developing novel synthesis methods and exploring new BHN compounds for hydrogen storage,[1,2]which has been one of the bottlenecks for wide deployment of hydrogen fuel cell cars.Boron is also a key element of the electrolyte salt for the emerging Na-ion and Mg batteries. Its ability to form large and electrochemically stable ions enables good tuning of the interactions between anions and cations, and the conductivity and electrochemical windows of the corresponding electrolytes. For example, sodium-difluoro(oxalato)borate (NaDFOB) outperforms the most widely used commercial salts for Na-ion batteries in terms of rate capability and cycling performance.[3]This breakthrough in hydrogen storage and Na-ion batteries has been successfully commercialized in partnership with Boron Molecular, a specialist chemical manufacturer.Boron and nitrogen together form a layered compound, hexagonal boron nitride (h-BN), which is isostructural to graphene. By guiding the dehydrogenation, BHN compounds can be made to form few-atomic-layered h-BN. We have been able to grow large few-atomic-layer h-BN nanosheets on Cu substrates. h-BNnanosheets could be an excellent atomically thin protective layer over Cu substrate if it is made with high quality.[4]Our recent findings have seen boron nitride nanosheets dramatically improve the thermal response of temperature-sensitive hydrogels.[5]

REFERENCES

[1] Z. Huang, et al,Energy Environ. Sci.,2012, 5, 9257.

[2] W. Chen, et al.,Chem.−Euro. J.,2016, 22, 1.

[3] J. Chen, et al.,Chem. Commun.,2015, 51, 9809.

[4] M. Khan, et al.,Adv. Mater.,2016,online.

[5] M. Khan, et al., Nanoscale,2016,8, 15926.

[6] F. Xiao, et al.,Adv. Mater.,2015, 27, 7196.

个人简介

工作经历

2015.11- 高级研究员,伍伦贡大学,澳大利亚

2012.4-2015.3 研究员,澳大利亚科学委员会青年职业奖(Discovery Early Career Researcher Award,类似国家优青),伍伦贡大学

2011.6-2012.3 博士后,伍伦贡大学校长博士后基金(3年支持)

2008.10-2011.5 博士后,俄亥俄州立大学,美国

科研方向

围绕硼元素

1. 1.新型储能材料的研发。具体包括储氢材料(固态和液态)和下一代电池的正负极及电解液的开发。与澳大利亚Boron Molecular签署了一项技术转协议。该公司采取我的技术生产三种化合物。

2.二维氮化硼的合成和修饰。具体包括气相沉积法制备单层和双层氮化硼,和纳米氮化硼的化学修饰。在微观防腐蚀、防氧化方面,研发成果获国际顶级期刊<自然>点评, 540, 11, 2016)

3. 3.超硬硼化物的研发和应用。

学术论文表示通讯作者)

1个书本章节,3个专利(提交), 59个期刊论文。题目涵盖:1)含硼储氢材料,2)氮氧化合物光催化材料,3)二维氮化硼和石墨烯,4)电池材料:正负极和电解液。作为通讯作者,近期文发表在Energy & Environmental Science(影响因子: 25.42),Advanced Materials(两篇,影响因子: 18.96),Materials Today(影响因子:17.79),Chemistry of Materials(影响因子: 9.407),Journal of Materials Chemistry A(IF: 8.26),Chemical Communications(影响因子: 6.567),ACS Applied Materials & Interfaces(IF: 7.145),Inorganic Chemistry(影响因子: 4.794)等。

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