Boron Innovation: From energy storage to nanomaterials

讲座标题:Boron Innovation: From energy storage to nanomaterials

主讲人: Zhenguo Huang

讲座时间:2017-04-17 10:00:00

讲座地点:务实楼202会议室

讲座语言:中文

主办单位:环化学院


讲座内容:

Boron, hydrogen, and nitrogen form many compounds together (denoted as BHN) that have high hydrogen capacity (weight percent). These compounds typically feature extensive intra- and/or intermolecular N−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-BN nanosheets 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] F. Xiao, et al., Adv. Mater., 2015, 27, 7196.

  

 


主讲人简介:

• 黄振国博士,伍伦贡大学博士毕业,现任高级研究员,日本国立材料科学研究所科研顾问,曾获伍伦贡大学科技转化奖,澳大利亚科学委员会青年职业奖 (类似国家优青)。目前研究方向主要包括储能材料和硼材料的研究与开发。近期在Energy & Environmental Science (影响因子: 25.42), Advanced Materials (影响因子: 18.96), 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)等期刊发表论文60余篇。