Malik, R;
Loveridge, MJ;
Williams, LJ;
Huang, Q;
West, G;
Shearing, PR;
Bhagat, R;
(2019)
Porous Metal-Organic Frameworks for Enhanced Performance Silicon Anodes in Lithium-Ion Batteries.
Chemistry of Materials
, 31
(11)
pp. 4156-4165.
10.1021/acs.chemmater.9b00933.
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Abstract
Maintaining the physical integrity of electrode microstructures in Li-ion batteries is critical to significantly extend their cycle life. This is especially important for high-capacity anode materials such as silicon, whose operational volume expansion exerts huge internal stress within the anode, resulting in electrode destruction and capacity fade. In this study, we demonstrate that by incorporating metal–organic frameworks (MOFs) with carboxylate organic linkers into Si-based anodes, a stable and flexible pore network is generated to maximize and maintain Li-ion flux throughout the electrode’s architecture. We show that the zirconium carboxylate MOF UiO-67 is a versatile comaterial to boost performance and mitigate the rate of anode degradation that presently limits the lifetime of Si anodes. The cage-like pores in UiO-67 and flexural properties of the 4,4′-biphenyldicarboxylate organic linker are proposed to create robust “ionophores” in the anode film to enhance longer term durability and performance.
| Type: | Article |
|---|---|
| Title: | Porous Metal-Organic Frameworks for Enhanced Performance Silicon Anodes in Lithium-Ion Batteries |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.chemmater.9b00933 |
| Publisher version: | http://dx.doi.org/10.1021/acs.chemmater.9b00933 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | SOLID-ELECTROLYTE INTERPHASE, NANO-SILICON, ELECTROCHEMICAL PERFORMANCE, ENERGY-STORAGE, LI, SI, CAPACITY, MICROSTRUCTURE, MECHANISMS, STABILITY |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10111765 |
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