Co‐Crosslinked Water‐Soluble Biopolymers as a Binder for High‐Voltage LiNi_0.5Mn_1.5O₄|Graphite Lithium‐Ion Full Cells

Abstract

Figure 5. a) Schematic illustration of the co-crosslinked binder networkcomposed of CMC (blue chains) and GG (purple chains) interconnected by CA (green). b) FTIR spectra with the samecolor code for the single components (CA, GG, and CMC), their mixtures beforecrosslinking( CMC+ +GG and CMC+ +CA+ +GG) and the co-crosslinked binder (GG-X-CMC, light purple) with the characteristicester band at ñ = 1720 cm À1 .

Scalable Synthesis of Microsized, Nanocrystalline Zn0.9Fe0.1O‐C Secondary Particles and Their Use in Zn0.9Fe0.1O‐C/LiNi0.5Mn1.5O4 Lithium‐Ion Full Cells

“…Since these values again refer only to the two active materials at the negative and positive electrodes, so that for direct comparison with commercial cells also the inactive components would have to be considered (commonly, extensive optimization is done prior to any commercialization). Nevertheless, the EE is not affected by the presence and any optimization of the inactive components (apart from polarization effects) and the specific energy reported herein is rather comparable to that of a little more than 300 Wh kg −1 recently reported for a graphite/LNMO laboratory‐scale full cell, albeit at a lower discharge/charge rate of C/3 . A summary of the results obtained for the three full cells is provided in Table .…”

Effect of Applying a Carbon Coating on the Crystal Structure and De-/Lithiation Mechanism of Mn-Doped ZnO Lithium-Ion Anodes

“…24 Following pre-lithiation of the anode active material, a full-cell composed of carbon-coated Sn 0.9 Co 0.05 Mn 0.05 O 2 (SCMO-C) and high-voltage LiNi 0.5 Mn 0.5 O 4 (LNMO) as the active material for the negative and positive electrode, respectively, provided a specific energy of 312 Wh kg −1 (based on the mass of the two active materials; cycled at 1 C; with 1 C = 147 mA g −1 LNMO ), which is slightly higher than what has been reported for lab-scale graphite||LNMO cells with about 300 Wh kg −1 at C/3 (1 C = 147 mA g −1 LNMO ). 25 Somewhat lower values have been very recently reported for Zn 0.9 Fe 0.1 O-C||LNMO cells with around 160 to 280 Wh kg −1 at 1 C (1 C = 147 mA g −1 LNMO ), revealing a substantial impact of the degree of pre-lithiation on the achievable specific energy 26 ; in fact, not only on the specific energy, but also the energy efficiency. 26,27 With regard to the effect of introducing manganese into ZnO, however, there has been only one study reporting the electrochemical performance of such material, to the best of our knowledge -which was rather poor with a rapid capacity fading to about 210 mAh g −1 before stabilizing.…”

A Review of the Design of Advanced Binders for High‐Performance Batteries

“…Due to the potential low cost and sustainability, there is a tendency to extract binder materials from natural sources for the electrode manufacture. Subsequently, natural guar gum (GG) was used as a binding agent for the LNMO cathode; [ 144 ] its success in other applications, such as Si anode and lithium layered oxides, has been demonstrated with excellent mechanical stability and tensile strength. The usage of GG for LNMO can effectively increase the electrode loading with decreased binder content compared to CMC.…”