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Featured researches published by Xiaoting Lin.


ACS Applied Materials & Interfaces | 2016

Effect of Sodium-Site Doping on Enhancing the Lithium Storage Performance of Sodium Lithium Titanate.

Pengfei Wang; Shangshu Qian; Ting-Feng Yi; Haoxiang Yu; Lei Yan; Peng Li; Xiaoting Lin; Miao Shui; Jie Shu

Via Li(+), Cu(2+), Y(3+), Ce(4+), and Nb(5+) dopings, a series of Na-site-substituted Na1.9M0.1Li2Ti6O14 are prepared and evaluated as lithium storage host materials. Structural and electrochemical analyses suggest that Na-site substitution by high-valent metal ions can effectively enhance the ionic and electronic conductivities of Na2Li2Ti6O14. As a result, Cu(2+)-, Y(3+)-, Ce(4+)-, and Nb(5+)-doped samples reveal better electrochemical performance than bare Na2Li2Ti6O14, especially for Na1.9Nb0.1Li2Ti6O14, which can deliver the highest reversible charge capacity of 259.4 mAh g(-1) at 100 mA g(-1) among all samples. Even when cycled at higher rates, Na1.9Nb0.1Li2Ti6O14 still can maintain excellent lithium storage capability with the reversible charge capacities of 242.9 mAh g(-1) at 700 mA g(-1), 216.4 mAh g(-1) at 900 mA g(-1), and 190.5 mAh g(-1) at 1100 mA g(-1). In addition, ex situ and in situ observations demonstrate that the zero-strain characteristic should also be responsible for the outstanding lithium storage capability of Na1.9Nb0.1Li2Ti6O14. All of this evidence indicates that Na1.9Nb0.1Li2Ti6O14 is a high-performance anode material for rechargeable lithium ion batteries.


RSC Advances | 2015

Enhanced lithium storage property of Na-doped Li2Na2Ti6O14 anode materials for secondary lithium-ion batteries

Mengmeng Lao; Peng Li; Xiaoting Lin; Lianyi Shao; Miao Shui; Nengbing Long; Dongjie Wang; Jie Shu

In this paper, a series of Na-doped Li2Na2Ti6O14 samples are synthesized by a simple solid-state reaction method through Li-site substitution with Na. Morphology observation shows that all five materials are well crystallized with a particle size in the range of 150–300 nm. Electrochemical analysis shows that Li1.95Na2.05Ti6O14 exhibits lower charge–discharge polarization (0.05 V) than that (0.11 V) of other Li2−xNa2+xTi6O14 samples (x = 0.00, 0.10, 0.15, 0.20). As a result, Li1.95Na2.05Ti6O14 has the highest initial charge capacity of 243.6 mA h g−1, and maintains a reversible capacity of 210.7 mA h g−1 after 79 cycles. For comparison, Li2−xNa2+xTi6O14 (x = 0.00, 0.10, 0.15 and 0.20) samples only hold a reversible capacity of 159.1, 203.5, 190.1 and 156.7 mA h g−1, respectively. Moreover, Li1.95Na2.05Ti6O14 also delivers the best rate performance compared with the other four samples, with a charge capacity of 221.1 mA h g−1 at 200 mA g−1, 211.9 mA h g−1 at 300 mA g−1, and 198.7 mA h g−1 at 400 mA g−1. Besides, the reversible in situ structural evolution proves that Li1.95Na2.05Ti6O14 is a stable host for lithium storage. All the improved electrochemical properties of Na-doped Li2Na2Ti6O14 should be attributed to the Na-doping with low content, which reduces the charge–discharge polarization and improves the ionic conductivity.


Journal of Power Sources | 2014

Copper/carbon coated lithium sodium titanate as advanced anode material for lithium-ion batteries

Kaiqiang Wu; Xiaoting Lin; Lianyi Shao; Miao Shui; Nengbing Long; Yuanlong Ren; Jie Shu


Journal of Power Sources | 2015

Lithium barium titanate: A stable lithium storage material for lithium-ion batteries

Xiaoting Lin; Peng Li; Lianyi Shao; Miao Shui; Dongjie Wang; Nengbing Long; Yuanlong Ren; Jie Shu


Journal of Electroanalytical Chemistry | 2014

Comparative study of Na2Li2Ti6O14 prepared by different methods as advanced anode material for lithium-ion batteries

Kaiqiang Wu; Dongjie Wang; Xiaoting Lin; Lianyi Shao; Miao Shui; Xinxin Jiang; Nengbing Long; Yuanlong Ren; Jie Shu


Journal of Power Sources | 2014

Enhanced electrochemical performance of sodium lithium titanate by coating various carbons

Kaiqiang Wu; Jie Shu; Xiaoting Lin; Lianyi Shao; Mengmeng Lao; Miao Shui; Peng Li; Nengbing Long; Dongjie Wang


Journal of Power Sources | 2015

Phase composition and electrochemical performance of sodium lithium titanates as anode materials for lithium rechargeable batteries

Kaiqiang Wu; Jie Shu; Xiaoting Lin; Lianyi Shao; Peng Li; Miao Shui; Mengmeng Lao; Nengbing Long; Dongjie Wang


Journal of Power Sources | 2015

Improved lithium storage performance of lithium sodium titanate anode by titanium site substitution with aluminum

Pengfei Wang; Peng Li; Ting-Feng Yi; Xiaoting Lin; Yan-Rong Zhu; Lianyi Shao; Miao Shui; Nengbing Long; Jie Shu


Electrochimica Acta | 2015

SrLi2Ti6O14: A probable host material for high performance lithium storage

Xiaoting Lin; Peng Li; Pengfei Wang; Haoxiang Yu; Shangshu Qian; Miao Shui; Xi Zheng; Nengbing Long; Jie Shu


Ceramics International | 2015

Preparation of spinel LiNi0.5Mn1.5O4 and Cr-doped LiNi0.5Mn1.5O4 cathode materials by tartaric acid assisted sol–gel method

Songjing Wang; Peng Li; Lianyi Shao; Kaiqiang Wu; Xiaoting Lin; Miao Shui; Nengbing Long; Dongjie Wang; Jie Shu

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