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You searched for: Author "Zhang, Yaru" Remove constraint Author: "Zhang, Yaru" Subject lithium batteries Remove constraint Subject: lithium batteries
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1. Curving effects of concave dodecahedral nanocarbons enable enhanced Li-ion storage

Author:
Zhang, Yaru,   et al.   ; Liu, Huan; Dong, Jinyang; Ye, Tao; Hao, Jianmin; Yang, Yijun; Jiang, Xiangfen; Kang, Xiaohong; Bando, Yoshio; Wang, Xi;     Show all 10 Authors
Source:
Journal of materials chemistry 2018 v.6 no.30 pp. 14894-14902
ISSN:
2050-7496
Subject:
active sites; anodes; electrolytes; lithium batteries; pyrolysis; transmission electron microscopes; transmission electron microscopy
Abstract:
... Dodecahedral nanocarbons with highly curving concave faces are synthesized via a one-step direct pyrolysis strategy. When tested as anodes in lithium-ion batteries (LIBs), the concave dodecahedral carbons (CDCs) show much enhanced capacity (∼2 times) and improved rate capability (603 mA h g⁻¹ at 2000 mA g⁻¹), when compared with the perfect ones without curved planes (PDCs, 280 mA h g⁻¹). The curvi ...
DOI:
10.1039/c8ta04934c

2. Improved cycling stability of NiS₂ cathodes through designing a “kiwano” hollow structure

Author:
Zhang, Yaru,   et al.   ; Lu, Fei; Pan, Lu; Xu, Yong; Yang, Yijun; Bando, Yoshio; Golberg, Dmitri; Yao, Jiannian; Wang, Xi;     Show all 9 Authors
Source:
Journal of materials chemistry 2018 v.6 no.25 pp. 11978-11984
ISSN:
2050-7496
Subject:
activation energy; cathodes; chemistry; enthalpy; ions; lithium; lithium batteries; melons; nickel; sulfides; transmission electron microscopy
Abstract:
... As one of the promising cathode materials, NiS₂ delivers an ultrahigh theoretical capacity of 870 mA h g⁻¹. However, it suffers from huge capacity fading during multiple cycles because of the close formation enthalpy between NiS₂ and other nickel sulphides (Ni₃S₄, Ni₃S₂ and NiS) and the large volumetric expansion during charging. To overcome these drawbacks, and being inspired by the morphology of ...
DOI:
10.1039/c8ta01551a