Rationally designed hollow precursor-derived Zn3V2O8 nanocages as a high-performance anode material for lithium-ion batteries
Transition metal oxides have attracted much interest for their high energy density in lithium-ion batteries. However, large volume expansion during the lithiation process limits their practical applications. Hollow structures with porous shell (such as nanocages) can provide sufficient void space to accommodate the volume expansion during the lithiation/delithiation processes. Herein, we developed a novel two-step method to prepare Zn 3 V 2 O 8 nanocages, in which a hollow precursor first was obtained by a solvothermal method and then was calcined in air atmosphere. Importantly, it is found that the resultant Zn 3 V 2 O 8 nanocages possess impressive lithium storage performance in terms of high specific capacity, superior rate capability and excellent cycling stability. The excellent lithium storage performance is attributed to easy electrolyte permeability, shorter Li + and electron diffusion pathways, and effective alleviation of the volume expansion provided by the cage-like hollow structure. When coupled with commercially available LiFePO 4 cathode, the full cell exhibits remarkable lithium storage performance. The Zn 3 V 2 O 8 nanocages demonstrate a great potential as an anode material for high-performance lithium-ion batteries. In addition, the electrochemical reaction mechanism of the Zn 3 V 2 O 8 nanocages as an anode material was systematically investigated based on ex-situ X-ray diffraction, X-ray photo electron spectroscopy, and transmission electron microscopy.
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기