폴리피롤/설폰화 폴리(2,6-디메틸-1,4-페닐렌 옥사이드) 복합전극의 제조 및 특성 Preparation and Characteristics of Polypyrrole/sulfonated Poly(2,6-dimethyl-1,4-phenylene oxide) Composite Electrode원문보기
[ $PPy^+DBS^-$ ] 복합체는 유화중합에 의해 제조되었고 이때 iron(III) chloride($FeCl_3$)는 개시제로, dodecyl benzene sulfonic acid(DBSA)는 계면활성제 및 도판트로 사용되었다. Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO)는 chlorosulfonic acid(CSA)를 사용하여 설폰화되었고 양극은 $PPy^+DBS^-$ 복합체, 도전제 그리고 바인더로 구성되며 이때 바인더로 PPO와 설폰화된 poly (2,6-dimethyl-1,4-phenylene oxide) (SPPO)를 사용하였다. $PPy^+DBS^-/SPPO$ 양극은 $PPy^+DBS^-/PPO$에 비해 약 50% 높은 충 방전 성능을 나타내었는데 이는 SPPO가 바인더뿐만 아니라 도판트로 작용했기 때문이다. 더욱이 바인더로 사용된 고분자의 설폰화는 전도성 고분자와의 coulombic attraction을 유발시켜 두 상간의 혼화성을 증가시켰을 뿐만 아니라 양극과 전해질 사이의 접촉면적을 증가시켜 전기화학적으로 우수한 성능을 나타나게 했다.
[ $PPy^+DBS^-$ ] 복합체는 유화중합에 의해 제조되었고 이때 iron(III) chloride($FeCl_3$)는 개시제로, dodecyl benzene sulfonic acid(DBSA)는 계면활성제 및 도판트로 사용되었다. Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO)는 chlorosulfonic acid(CSA)를 사용하여 설폰화되었고 양극은 $PPy^+DBS^-$ 복합체, 도전제 그리고 바인더로 구성되며 이때 바인더로 PPO와 설폰화된 poly (2,6-dimethyl-1,4-phenylene oxide) (SPPO)를 사용하였다. $PPy^+DBS^-/SPPO$ 양극은 $PPy^+DBS^-/PPO$에 비해 약 50% 높은 충 방전 성능을 나타내었는데 이는 SPPO가 바인더뿐만 아니라 도판트로 작용했기 때문이다. 더욱이 바인더로 사용된 고분자의 설폰화는 전도성 고분자와의 coulombic attraction을 유발시켜 두 상간의 혼화성을 증가시켰을 뿐만 아니라 양극과 전해질 사이의 접촉면적을 증가시켜 전기화학적으로 우수한 성능을 나타나게 했다.
Polypyrrole (PPy) was made by an emulsion polymerization using iron (III) chloride ($FeCl_3$) as an initiator and dodecyl benzene sulfuric acid (DBSA) as an emulsifier and dopant. Poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) was sulfonated by chlorosulfonic acid (CSA). The cathode was co...
Polypyrrole (PPy) was made by an emulsion polymerization using iron (III) chloride ($FeCl_3$) as an initiator and dodecyl benzene sulfuric acid (DBSA) as an emulsifier and dopant. Poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) was sulfonated by chlorosulfonic acid (CSA). The cathode was composed of $PPy^+DBS^-$ complex, conductor powder, and PPO or sulfonated poly (2,6-dimethyl-1,4-phenylene oxide) (SPPO) as a binder or dopant. The charge-discharge performance of $PPy^+DBS^-/SPPO$ cathode was increased as the extent of about 50%, than $PPy^+DBS^-/PPO$. This is because SPPO played a role as a binder as well as a dopant. In addition, sulfonation brings out the increase of miscibility between PPy and SPPO, and the increase of contact area between cathode and electrolyte.
Polypyrrole (PPy) was made by an emulsion polymerization using iron (III) chloride ($FeCl_3$) as an initiator and dodecyl benzene sulfuric acid (DBSA) as an emulsifier and dopant. Poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) was sulfonated by chlorosulfonic acid (CSA). The cathode was composed of $PPy^+DBS^-$ complex, conductor powder, and PPO or sulfonated poly (2,6-dimethyl-1,4-phenylene oxide) (SPPO) as a binder or dopant. The charge-discharge performance of $PPy^+DBS^-/SPPO$ cathode was increased as the extent of about 50%, than $PPy^+DBS^-/PPO$. This is because SPPO played a role as a binder as well as a dopant. In addition, sulfonation brings out the increase of miscibility between PPy and SPPO, and the increase of contact area between cathode and electrolyte.
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제안 방법
The degree of sulfonation of PPO was reported to the previous study.18 SPPO of 35% sulfonation degree was used in this study, and the other information such as NMR and TGA spectra is provided.
대상 데이터
DBSA used as both protonating and emulsifying agent were purchased form Aldrich Co. Carbon black (Super-P, MMM Carbon Co.) was used as a conducting agent, and Li metal was used as electrode materials. The electrolyte was used the mixture of vol% propylene carbonate (PC)/dime— thylcarbonate (DMC) and LiClO4 salt.
Finally, lithiumated SPPO was obtained as a powder sample after it was dried for 12 h in a vacuum oven. In this study, SPPO was used Li-substituted SPPO. Hence, lithiumated SPPO is denoted as SPPO.
Chlorosulfonic acid (CSA) was used as sulfonic agent, which was purchased Kanto Chemical Co. The chloroform (Junsei Chemical Co.) and tetrahydrofuran (THF, Aldrich Co.) were used as solvents. DBSA used as both protonating and emulsifying agent were purchased form Aldrich Co.
) was used as a conducting agent, and Li metal was used as electrode materials. The electrolyte was used the mixture of vol% propylene carbonate (PC)/dime— thylcarbonate (DMC) and LiClO4 salt.
이론/모형
The electrical conductivities of PPy+DBS-/PPO> PPy+DBS~/ PVDF, and PPy +DBS -/SPPO were measured by the four probes method. The electrical conductivities of PPy+DBS~/ PVDF and PPy+DBS-/PPO were shown in Table 1.
성능/효과
In this study, the effect of PVDF, poly (2,6-dimethyl1,4-phenylene oxide) (PPO) and sulfonated PPO (SPPO) as binders was compared. We, mainly, focus on the effect of SPPO as a polymer binder in a PPy/SPPO composite system.
참고문헌 (21)
K. Gurunathan, D. P. Amalnerkar, and D. C. Trivedi, Mater. Lett., 57, 1642 (2003)
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