Capacitive lithium storage of lithiated mesoporous titania

Jijian Xu; Wei Ding; Guoheng Yin; Zhangliu Tian; Shaoning Zhang; Zhanglian Hong; Fuqiang Huang

doi:10.1016/j.mtener.2018.05.016

Capacitive lithium storage of lithiated mesoporous titania

Jijian Xu, Wei Ding, Guoheng Yin, Zhangliu Tian, Shaoning Zhang, Zhanglian Hong, Fuqiang Huang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

23 Citations (Scopus)

Abstract

Titania with intrinsic safety (without lithium deposition) has met the safety requirement for high-power batteries, however, its poor rate capability due to sluggish ion diffusion coefficients remains as a challenge. Here mesoporous structure titania with a fast ion-conducting surface layer through lithiation can achieve capacitive lithium storage: 220 mA h g⁻¹ at 1 C, 114 mA h g⁻¹ at 50 C, 93 mA h g⁻¹ at 100 C. The improvement in rate performance can be attributed to two factors: The resulting lithiated titania shows over 5 orders of magnitude improvement of conductivity (from 0.001 to 198.20 μS cm⁻¹) induced by the presence of bulk Ti³⁺, enabling an ultra-fast conduction path for electrons; The lithiated surface layer is favorable to faster lithium ion transport, addressing the limited lithium diffusion between the electrolyte and the active electrode materials. This new route may offer a general approach towards lithium batteries with capacitor-like rate performance. © 2018 Elsevier Ltd

Original language	English
Pages (from-to)	240-246
Journal	Materials Today Energy
Volume	9
DOIs	https://doi.org/10.1016/j.mtener.2018.05.016
Publication status	Published - 1 Sept 2018
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

Financial support from the National Key Research and Development Program (Grant No. 2016YFB0901600), NSF of China (Grants 61376056, 51672301 and 51672295), Science and Technology Commission of Shanghai (Grants 14520722000, 16ZR1440500 and 16JC1401700), Shanghai Science and Technology Development Funds (Grant 16QA1404200), and Key Research Program of Chinese Academy of Sciences (Grant KGZD-EW-T06) is acknowledged. The authors would like to thank shiyanjia lab for the support of XPS analysis.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Capacitive
High-power
Li-ion battery
Lithiated titania
Mesoporous

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abstract = "Titania with intrinsic safety (without lithium deposition) has met the safety requirement for high-power batteries, however, its poor rate capability due to sluggish ion diffusion coefficients remains as a challenge. Here mesoporous structure titania with a fast ion-conducting surface layer through lithiation can achieve capacitive lithium storage: 220 mA h g−1 at 1 C, 114 mA h g−1 at 50 C, 93 mA h g−1 at 100 C. The improvement in rate performance can be attributed to two factors: The resulting lithiated titania shows over 5 orders of magnitude improvement of conductivity (from 0.001 to 198.20 μS cm−1) induced by the presence of bulk Ti3+, enabling an ultra-fast conduction path for electrons; The lithiated surface layer is favorable to faster lithium ion transport, addressing the limited lithium diffusion between the electrolyte and the active electrode materials. This new route may offer a general approach towards lithium batteries with capacitor-like rate performance. {\textcopyright} 2018 Elsevier Ltd",

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AU - Xu, Jijian

AU - Ding, Wei

AU - Yin, Guoheng

AU - Tian, Zhangliu

AU - Zhang, Shaoning

AU - Hong, Zhanglian

AU - Huang, Fuqiang

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - Titania with intrinsic safety (without lithium deposition) has met the safety requirement for high-power batteries, however, its poor rate capability due to sluggish ion diffusion coefficients remains as a challenge. Here mesoporous structure titania with a fast ion-conducting surface layer through lithiation can achieve capacitive lithium storage: 220 mA h g−1 at 1 C, 114 mA h g−1 at 50 C, 93 mA h g−1 at 100 C. The improvement in rate performance can be attributed to two factors: The resulting lithiated titania shows over 5 orders of magnitude improvement of conductivity (from 0.001 to 198.20 μS cm−1) induced by the presence of bulk Ti3+, enabling an ultra-fast conduction path for electrons; The lithiated surface layer is favorable to faster lithium ion transport, addressing the limited lithium diffusion between the electrolyte and the active electrode materials. This new route may offer a general approach towards lithium batteries with capacitor-like rate performance. © 2018 Elsevier Ltd

AB - Titania with intrinsic safety (without lithium deposition) has met the safety requirement for high-power batteries, however, its poor rate capability due to sluggish ion diffusion coefficients remains as a challenge. Here mesoporous structure titania with a fast ion-conducting surface layer through lithiation can achieve capacitive lithium storage: 220 mA h g−1 at 1 C, 114 mA h g−1 at 50 C, 93 mA h g−1 at 100 C. The improvement in rate performance can be attributed to two factors: The resulting lithiated titania shows over 5 orders of magnitude improvement of conductivity (from 0.001 to 198.20 μS cm−1) induced by the presence of bulk Ti3+, enabling an ultra-fast conduction path for electrons; The lithiated surface layer is favorable to faster lithium ion transport, addressing the limited lithium diffusion between the electrolyte and the active electrode materials. This new route may offer a general approach towards lithium batteries with capacitor-like rate performance. © 2018 Elsevier Ltd

KW - Capacitive

KW - High-power

KW - Li-ion battery

KW - Lithiated titania

KW - Mesoporous

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DO - 10.1016/j.mtener.2018.05.016

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JO - Materials Today Energy

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Capacitive lithium storage of lithiated mesoporous titania

Abstract

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UN SDGs

Research Keywords

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