TY - JOUR

T1 - Cathode material for sodium-ion batteries based on manganese hexacyanoferrate: the role of the binder component

AU - Шкреба, Екатерина Владимировна

AU - Апраксин, Ростислав Валерьевич

AU - Толстопятова, Елена Геннадьевна

AU - Кондратьев, Вениамин Владимирович

N1 - Funding Information: This work was supported by Saint Petersburg State University (grant № 26455158).

PY - 2020/11

Y1 - 2020/11

N2 - Sodium manganese hexacyanoferrate (NaMnHCF) was synthesized by a hydrothermal method and investigated as a cathode material for sodium-ion batteries. The morphology and the structure of NaMnHCF were investigated by X-ray diffraction, scanning electron microscopy, and EDX analysis. New composition of NaMnHCF cathode material for sodium-ion batteries with eco-friendly water-based binder consisting of conducting polymer poly-3,4-ethylenedioxythiopene/polystyrene sulfonate (PEDOT:PSS) dispersion and carboxymethyl cellulose (СМС) was proposed. The electrochemical properties of NaMnHCF cathode material with conductive polymer binder were investigated by cyclic voltammetry and galvanostatic charge-discharge, and the results were compared with the performance of a conventional PVDF-bound material. It was shown that the initial discharge capacity of electrodes with conductive binder is 130 mAh g −1, whereas the initial discharge capacity of PVDF-bound electrodes was 109 mAh g −1 (both at current density 120 mA g −1, values normalized by NaMnHCF mass). The material with conductive binder also has better rate capability; however, it is losing in cycling capability to the electrode composition with conventional PVDF binder.

AB - Sodium manganese hexacyanoferrate (NaMnHCF) was synthesized by a hydrothermal method and investigated as a cathode material for sodium-ion batteries. The morphology and the structure of NaMnHCF were investigated by X-ray diffraction, scanning electron microscopy, and EDX analysis. New composition of NaMnHCF cathode material for sodium-ion batteries with eco-friendly water-based binder consisting of conducting polymer poly-3,4-ethylenedioxythiopene/polystyrene sulfonate (PEDOT:PSS) dispersion and carboxymethyl cellulose (СМС) was proposed. The electrochemical properties of NaMnHCF cathode material with conductive polymer binder were investigated by cyclic voltammetry and galvanostatic charge-discharge, and the results were compared with the performance of a conventional PVDF-bound material. It was shown that the initial discharge capacity of electrodes with conductive binder is 130 mAh g −1, whereas the initial discharge capacity of PVDF-bound electrodes was 109 mAh g −1 (both at current density 120 mA g −1, values normalized by NaMnHCF mass). The material with conductive binder also has better rate capability; however, it is losing in cycling capability to the electrode composition with conventional PVDF binder.

KW - Binders

KW - Carboxymethyl cellulose

KW - Conducting polymer

KW - PEDOT:PSS

KW - Sodium manganese hexacyanoferrate

KW - Sodium-ion batteries

KW - STORAGE

KW - SUPERIOR CATHODE

KW - PSS

KW - PEDOT

KW - POSITIVE ELECTRODE

KW - COORDINATED WATER

KW - FRAMEWORK

KW - PRUSSIAN BLUE ANALOG

KW - RATE CAPABILITY

KW - LITHIUM

UR - http://www.scopus.com/inward/record.url?scp=85091277364&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/64706743-6f09-3215-8e22-ac7af71e0ba2/

U2 - 10.1007/s10008-020-04746-4

DO - 10.1007/s10008-020-04746-4

M3 - Article

VL - 24

SP - 3049

EP - 3057

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

IS - 11-12

ER -