Lithium Ion Battery Separators Based On Carboxylated Cellulose Nanofibers From Wood
Source abstract
Abstract
Carboxylated cellulose nanofibers, prepared by TEMPO-mediated oxidation (TOCN), were processed into asymmetric mesoporous membranes using a facile paper-making approach and investigated as lithium ion battery separators. Membranes made of TOCN with sodium carboxylate groups (TOCN-COO-Na+) showed capacity fading after a few cycles of charging and discharging. On the other hand, its protonated counterpart (TOCN-COOH) showed highly improved electrochemical and cycling stability, displaying 94.5% of discharge capacity maintained after 100 cycles at 1 C rate of charging and discharging. The asymmetric surface porosity of the membranes must be considered when assembling a battery cell as it influences the rate capabilities of the battery. The wood-based TOCN-membranes have a good potential as an ecofriendly alternative to conventional fossil fuel-derived separators without adverse side effects.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Cellulose Research Studies · Supercapacitor Materials and Fabrication · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Wallenberg Wood Science Centre, Royal Institute of Technology, KTH Royal Institute of Technology, SE100 44 Stockholm, Sweden
Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, SE100 44 Stockholm, Sweden
Department of Chemical Engineering, KTH Royal Institute of Technology, SE100 44 Stockholm, Sweden
Department of Materials and Environmental Chemistry, Stockholm University, SE106 91 Stockholm, Sweden
Funding
Knut och Alice Wallenbergs Stiftelse · Wallenberg Wood Science Center
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