Zhou Lin, Cheng Yong, Sun Qujiang, Sun Lianshan, Wang Chunli, Wang Xuxu, Yin Dongming, Wang Limin, Ming Jun
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun, 130022, China.
Chem Commun (Camb). 2018 Apr 17;54(32):4049-4052. doi: 10.1039/c8cc01279b.
A new galvanic replacement synthetic strategy using metallic Ti as a template for hollow voids is presented and an intriguing hollow interwoven structured Sb/TiO2 is introduced. The applied Ti can play the triple role of reducing the Sb-ion into Sb, acting as a sacrificial template to generate hollow voids through a structural evolution and behaving as an alternative non-sensitive titanium salt to form TiO2. Interwoven Sb/TiO2 can be readily activated and can also buffer drastic volumetric variations during storage of alkaline ions (e.g. Li+, Na+), thereby demonstrating high capacity and superior cycling ability in rechargeable batteries.
提出了一种以金属钛为空心模板的新型电置换合成策略，并引入了一种有趣的空心交织结构的Sb/TiO₂。所应用的钛可发挥三重作用：将Sb离子还原为Sb，作为牺牲模板通过结构演变产生空心，以及作为替代的非敏感钛盐形成TiO₂。交织的Sb/TiO₂易于活化，并且还可以缓冲碱性离子（如Li⁺、Na⁺）存储过程中的剧烈体积变化，从而在可充电电池中展现出高容量和卓越的循环能力。
