{"id":1695,"date":"2019-05-22T02:47:38","date_gmt":"2019-05-22T02:47:38","guid":{"rendered":"http:\/\/www.meetyoucarbide.com\/single-post-try-these-high-end-atmospheric-grade-structural-characterization-techniques\/"},"modified":"2020-05-04T13:12:07","modified_gmt":"2020-05-04T13:12:07","slug":"try-these-high-end-atmospheric-grade-structural-characterization-techniques","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/thu-nhung-ky-thuat-dac-diem-cau-truc-cap-cao-cap-khi-quyen-nay\/","title":{"rendered":"H\u00e3y th\u1eed c\u00e1c k\u1ef9 thu\u1eadt \u0111\u1eb7c tr\u01b0ng c\u1ea5u tr\u00fac c\u1ea5p kh\u00ed quy\u1ec3n cao c\u1ea5p n\u00e0y"},"content":{"rendered":"
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Trong nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y, vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p k\u1ef9 thu\u1eadt khuy\u1ebft t\u1eadt hi\u1ec7n \u0111ang l\u00e0 m\u1ed9t \u0111i\u1ec3m n\u00f3ng trong nghi\u00ean c\u1ee9u. Trong c\u00e1c oxit kim lo\u1ea1i chuy\u1ec3n ti\u1ebfp, sulfua v\u00e0 c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c, s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c khuy\u1ebft t\u1eadt s\u1ebd l\u00e0m thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 c\u1ea5u tr\u00fac \u0111i\u1ec7n t\u1eed v\u00e0 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a ch\u00fang, do \u0111\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a ch\u00fang trong l\u0129nh v\u1ef1c l\u01b0u tr\u1eef v\u00e0 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng. V\u00ed d\u1ee5, trong thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac c\u1ee7a v\u1eadt li\u1ec7u pin, vi\u1ec7c \u0111\u01b0a ra \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00e1c khuy\u1ebft t\u1eadt c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a v\u1eadt li\u1ec7u, cung c\u1ea5p c\u00e1c v\u1ecb tr\u00ed ho\u1ea1t \u0111\u1ed9ng h\u01a1n v\u00e0 c\u1ea3i thi\u1ec7n s\u1ef1 chuy\u1ec3n pha c\u1ee7a v\u1eadt li\u1ec7u trong qu\u00e1 tr\u00ecnh nung ch\u1ea3y \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t \u0111i\u1ec7n h\u00f3a cao h\u01a1n. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau n\u00e0y, b\u1eb1ng c\u00e1ch quan s\u00e1t v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c \u0111i\u1ec3m c\u00e1c khuy\u1ebft t\u1eadt c\u1ee7a v\u1eadt li\u1ec7u, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 m\u1edf ra c\u00e1nh c\u1eeda m\u1edbi cho l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u v\u1eadt li\u1ec7u l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng b\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u m\u1ed1i quan h\u1ec7 gi\u1eefa c\u1ea5u tr\u00fac v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u t\u1eeb c\u1ea5p \u0111\u1ed9 nguy\u00ean t\u1eed. M\u1eb7c d\u00f9 kh\u00f4ng c\u00f2n hi\u1ebfm khi s\u1eed d\u1ee5ng HRTEM, XPS, EELS v\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1c khuy\u1ebft t\u1eadt c\u1ee7a v\u1eadt li\u1ec7u, nh\u01b0ng c\u00e1c k\u1ef9 thu\u1eadt n\u00e0y ch\u1ec9 c\u00f3 th\u1ec3 gi\u1edbi h\u1ea1n trong vi\u1ec7c nghi\u00ean c\u1ee9u c\u00e1c khu v\u1ef1c c\u1ee5c b\u1ed9 c\u1ee7a b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u, \u0111\u01b0\u1ee3c k\u00e9o c\u0103ng \u0111\u1ec3 nghi\u00ean c\u1ee9u khuy\u1ebft t\u1eadt t\u1ed5ng th\u1ec3 c\u1ee7a v\u1eadt li\u1ec7u. Ngo\u00e0i ra, c\u00e1c k\u1ef9 thu\u1eadt n\u00e0y ch\u1ec9 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 ph\u00e2n t\u00edch b\u00e1n \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t c\u1ee7a v\u1eadt li\u1ec7u, c\u00f2n \u0111\u1ed1i v\u1edbi c\u00e1c m\u1eabu d\u00e0y h\u01a1n th\u00ec \u201cn\u1eb1m ngang \u0111\u1ec9nh n\u00fai, \u0111\u1ed9 s\u00e2u ch\u00eanh l\u1ec7ch\u201d. \u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi nh\u1eefng m\u1eabu c\u00f3 b\u1ec1 m\u1eb7t v\u00e0 khuy\u1ebft t\u1eadt b\u00ean trong kh\u00e1c nhau th\u00ec l\u1ea1i c\u00e0ng b\u1ea5t l\u1ef1c. \u1ede \u0111\u00e2y, t\u00e1c gi\u1ea3 \u0111\u00e3 bi\u00ean so\u1ea1n m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1eb7c tr\u01b0ng khuy\u1ebft t\u1eadt c\u1ea5p cao \u0111\u1ec3 m\u00f4 t\u1ea3 c\u1ea5u tr\u00fac v\u00e0 n\u1ed9i dung khuy\u1ebft t\u1eadt t\u1eeb \u0111i\u1ec3m to\u00e0n ph\u1ea7n v\u0129 m\u00f4 c\u1ee7a v\u1eadt li\u1ec7u trong l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u khuy\u1ebft t\u1eadt v\u1eadt li\u1ec7u n\u0103m 2018 v\u00e0 ph\u00e2n t\u00edch nh\u01b0 sau. N\u1ebfu c\u00f3 g\u00ec ch\u01b0a ho\u00e0n thi\u1ec7n, hoan ngh\u00eanh b\u1ea1n b\u1ed5 sung.<\/div>\n
[quang ph\u1ed5 tri\u1ec7t ti\u00eau positron]<\/div>\n
Ph\u1ed5 tri\u1ec7t ti\u00eau positron, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u1ed5 th\u1eddi gian h\u1ee7y positron (PILS), l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt th\u1eed nghi\u1ec7m kh\u00f4ng ph\u00e1 h\u1ee7y m\u1edbi cho c\u00e1c v\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u t\u1eeb c\u1ea5p \u0111\u1ed9 nguy\u00ean t\u1eed. K\u1ef9 thu\u1eadt n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c khuy\u1ebft t\u1eadt v\u00e0 ch\u1ed7 tr\u1ed1ng trong v\u1eadt li\u1ec7u r\u1eafn. Nguy\u00ean t\u1eafc c\u1ee7a k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n n\u00e0y l\u00e0 ph\u00e1t hi\u1ec7n th\u1eddi gian th\u01b0 gi\u00e3n gi\u1ea3i ph\u00f3ng tia gamma trong qu\u00e1 tr\u00ecnh h\u1ee7y b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng qu\u00e1 tr\u00ecnh h\u1ee7y khi positron t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c electron. \u0110\u1ed9 d\u00e0i c\u1ee7a th\u1eddi gian th\u01b0 gi\u00e3n ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc l\u1ed7 r\u1ed7ng c\u1ee7a v\u1eadt li\u1ec7u, t\u1ee9c l\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a kho\u1ea3ng tr\u1ed1ng. Vi\u1ec7c \u0111\u00e1nh gi\u00e1 gi\u00e1n ti\u1ebfp c\u00e1c khuy\u1ebft t\u1eadt \u1edf c\u1ea5p \u0111\u1ed9 nguy\u00ean t\u1eed trong v\u1eadt li\u1ec7u d\u1ef1a tr\u00ean th\u1eddi gian th\u01b0 gi\u00e3n c\u1ee7a qu\u00e1 tr\u00ecnh d\u1eadp t\u1eaft l\u00e0m cho k\u1ef9 thu\u1eadt \u0111\u00f3ng m\u1ed9t vai tr\u00f2 r\u1ea5t l\u1edbn trong thi\u1ebft k\u1ebf khuy\u1ebft t\u1eadt v\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng.<\/div>\n
M\u1ed9t nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y v\u1ec1 v\u1eadt li\u1ec7u molypden disulfide pha t\u1ea1p palladium \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o trong b\u00e0i b\u00e1o tr\u00ean Nature Communications (NAT. COMMUN., 2018, 9, 2120). K\u1ef9 thu\u1eadt n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1c khuy\u1ebft t\u1eadt \u0111\u01b0\u1ee3c t\u1ea1o ra sau khi pha t\u1ea1p, nh\u01b0 th\u1ec3 hi\u1ec7n trong h\u00ecnh. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n ra r\u1eb1ng sau khi v\u1eadt li\u1ec7u MoS2 \u0111\u01b0\u1ee3c pha t\u1ea1p ch\u1ea5t v\u1edbi palladium 1%, th\u1eddi gian gi\u00e3n \u03c41 c\u1ee7a khuy\u1ebft t\u1eadt m\u1ea1ng tinh th\u1ec3 v\u00e0 th\u1eddi gian gi\u00e3n ra \u03c42 c\u1ee7a khuy\u1ebft t\u1eadt tr\u1ed1ng \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i \u0111\u00e1ng k\u1ec3. Trong \u0111\u00f3 \u03c41 \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i t\u1eeb 183,6 gi\u00e2y \u0111\u1ebfn 206,2 gi\u00e2y, trong khi \u03c42 \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i t\u1eeb 355,5 gi\u00e2y \u0111\u1ebfn 384,6 gi\u00e2y. S\u1ef1 gia t\u0103ng th\u1eddi gian th\u01b0 gi\u00e3n n\u00e0y \u0111\u00e1nh d\u1ea5u s\u1ef1 gia t\u0103ng k\u00edch th\u01b0\u1edbc khi\u1ebfm khuy\u1ebft. Ngo\u00e0i ra, c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a th\u1eddi gian gi\u00e3n c\u0169ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, c\u00f3 ngh\u0129a l\u00e0 h\u00e0m l\u01b0\u1ee3ng khuy\u1ebft t\u1eadt trong v\u1eadt li\u1ec7u sau khi pha t\u1ea1p ch\u1ea5t cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi v\u1eadt li\u1ec7u molypden disulfua ch\u01b0a pha t\u1ea1p.<\/div>\n

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[Ph\u1ed5 c\u1ea5u tr\u00fac t\u1ed1t h\u1ea5p th\u1ee5 tia X m\u1edf r\u1ed9ng]<\/div>\n
C\u1ea5u tr\u00fac m\u1ecbn h\u1ea5p th\u1ee5 tia X m\u1edf r\u1ed9ng (XANES) l\u00e0 s\u1ef1 ph\u00e2n t\u00edch m\u00f4i tr\u01b0\u1eddng h\u00f3a h\u1ecdc xung quanh nguy\u00ean t\u1eed c\u1ee7a v\u1eadt li\u1ec7u b\u1eb1ng hi\u1ec7n t\u01b0\u1ee3ng h\u1ea5p th\u1ee5 tia X k\u00e9o d\u00e0i \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi hu\u1ef3nh quang ho\u1eb7c quang \u0111i\u1ec7n t\u1eed do b\u1ee9c x\u1ea1 tia X c\u1ee7a m\u1eabu ph\u00e1t ra. Hi\u1ec7n t\u01b0\u1ee3ng h\u1ea5p th\u1ee5 tia X k\u00e9o d\u00e0i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi h\u00e0m \u0111\u1eb7t h\u00e0ng trong ph\u1ea1m vi ng\u1eafn. T\u1eeb ph\u1ed5 c\u1ea5u tr\u00fac, c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c c\u00e1c d\u1eef li\u1ec7u nh\u01b0 ki\u1ec3u, kho\u1ea3ng c\u00e1ch v\u00e0 s\u1ed1 ph\u1ed1i tr\u00ed c\u1ee7a c\u00e1c nguy\u00ean t\u1eed l\u00e2n c\u1eadn c\u1ee7a nguy\u00ean t\u1eed h\u1ea5p th\u1ee5. S\u1ed1 l\u01b0\u1ee3ng khuy\u1ebft t\u1eadt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh m\u1ed9t c\u00e1ch \u0111\u1ecbnh t\u00ednh b\u1eb1ng c\u00e1ch quan s\u00e1t s\u1ef1 d\u1ecbch chuy\u1ec3n kho\u1ea3ng c\u00e1ch c\u1ee7a c\u00e1c nguy\u00ean t\u1eed ph\u1ed1i tr\u00ed li\u1ec1n k\u1ec1 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a c\u00e1c pic.<\/div>\n
Recently, Advanced Energy Material’s research article reported the use of XANES technology to study the defect of CaMnO3 as an electrode material (Adv. Energy Mater. 2018, 1800612). The researchers used XAS and XANES spectra to analyze oxygen defects in the material. It can be seen from the XANES spectrum that the peak intensity of CMO\/S-300 is significantly lower than that of CMO, which proves the decrease of the valence state of the material after sulfur reduction. In the map after Fourier transform, it is seen that the peak intensity of the CMO\/S-300 spectrum is lower than that of the CMO, and the spacing corresponding to some peaks is shifted from that of the CMO. These data illustrate the structural changes in the surface of the CMO\/S-300 after sulfur reduction and the formation of oxygen defects.<\/div>\n

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[Ph\u1ed5 ph\u1ea3n h\u1ed3i quay \u0111i\u1ec7n t\u1eed]<\/div>\n
C\u1ed9ng h\u01b0\u1edfng spin \u0111i\u1ec7n t\u1eed, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u1ea3n \u1ee9ng c\u1ed9ng h\u01b0\u1edfng thu\u1eadn t\u1eeb (EPR), l\u00e0 s\u1ef1 chuy\u1ec3n \u0111\u1ed5i c\u1ed9ng h\u01b0\u1edfng gi\u1eefa c\u00e1c m\u1ee9c n\u0103ng l\u01b0\u1ee3ng t\u1eeb x\u1ea3y ra trong t\u1eeb tr\u01b0\u1eddng kh\u00f4ng \u0111\u1ed5i trong m\u1eabu d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn. Khi t\u00e1c d\u1ee5ng m\u1ed9t s\u00f3ng \u0111i\u1ec7n t\u1eeb c\u00f3 t\u1ea7n s\u1ed1 \u03bd theo ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi t\u1eeb tr\u01b0\u1eddng ngo\u00e0i B th\u00ec n\u0103ng l\u01b0\u1ee3ng m\u00e0 \u00ealectron t\u1ef1 do c\u1ee7a v\u1eadt li\u1ec7u thu \u0111\u01b0\u1ee3c l\u00e0 h\u03bd. Khi m\u1ed1i quan h\u1ec7 gi\u1eefa \u03bd v\u00e0 B th\u1ecfa m\u00e3n h\u03bd = g\u03bcB, m\u1ed9t s\u1ef1 chuy\u1ec3n \u0111\u1ed5i m\u1ee9c t\u1eeb t\u00ednh x\u1ea3y ra, t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t \u0111\u1ec9nh h\u1ea5p th\u1ee5 xu\u1ea5t hi\u1ec7n tr\u00ean EPR. Gi\u00e1 tr\u1ecb c\u1ee7a g \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi m\u00f4i tr\u01b0\u1eddng h\u00f3a h\u1ecdc trong \u0111\u00f3 c\u00f3 c\u00e1c electron ch\u01b0a gh\u00e9p \u0111\u00f4i. C\u00e1c h\u1ee3p ch\u1ea5t kh\u00e1c nhau c\u00f3 gi\u00e1 tr\u1ecb g kh\u00e1c nhau.<\/div>\n
M\u1ed9t nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y c\u1ee7a Advanced Function Material \u0111\u00e3 b\u00e1o c\u00e1o vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 EPR \u0111\u1ec3 nghi\u00ean c\u1ee9u h\u1ed7n h\u1ee3p MoS2-Mxene pha 1T-2H c\u00f3 ch\u1ee9a c\u00e1c khuy\u1ebft t\u1eadt l\u01b0u hu\u1ef3nh l\u00e0m v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c cho pin lithium-sulfur (Adv. Funct. Mater. 2018, 1707578). C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u1ed5ng h\u1ee3p m\u1ed9t h\u1ed7n h\u1ee3p v\u1edbi MoS2 v\u00e0 MXene pha 1T-2H. B\u1eb1ng c\u00e1ch gi\u1ea3m kh\u00ed amoniac, v\u1eadt li\u1ec7u c\u00f3 c\u00e1c m\u1ee9c \u0111\u1ed9 khuy\u1ebft t\u1eadt l\u01b0u hu\u1ef3nh kh\u00e1c nhau \u0111\u00e3 \u0111\u01b0\u1ee3c thu \u0111\u01b0\u1ee3c v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ph\u00e2n t\u00edch th\u1eed nghi\u1ec7m EPR, ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng c\u00e1c v\u1eadt li\u1ec7u c\u00f3 th\u1eddi gian x\u1eed l\u00fd amoniac kh\u00e1c nhau c\u00f3 ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng khuy\u1ebft t\u1eadt l\u01b0u hu\u1ef3nh nh\u1ea5t \u0111\u1ecbnh, t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ec9nh h\u1ea5p th\u1ee5 c\u00f3 gi\u00e1 tr\u1ecb ag l\u00e0 2,0. Ngo\u00e0i ra, khi th\u1eddi gian x\u1eed l\u00fd amoniac k\u00e9o d\u00e0i, \u0111\u1ec9nh khuy\u1ebft t\u1eadt l\u01b0u hu\u1ef3nh d\u1ea7n tr\u1edf n\u00ean m\u1ea1nh h\u01a1n v\u00e0 r\u1ed9ng h\u01a1n, \u0111i\u1ec1u n\u00e0y ch\u1ee9ng t\u1ecf r\u1eb1ng c\u00e1c khuy\u1ebft t\u1eadt trong v\u1eadt li\u1ec7u t\u0103ng d\u1ea7n khi x\u1eed l\u00fd kh\u00ed amoniac. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c ch\u1ed7 tr\u1ed1ng l\u01b0u hu\u1ef3nh l\u00e0m cho v\u1eadt li\u1ec7u c\u00f3 \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng c\u1ee5c b\u1ed9, do \u0111\u00f3 l\u00e0m t\u0103ng s\u1ef1 h\u1ea5p ph\u1ee5 c\u1ee7a c\u00e1c anion polysulfide v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 \u1ee9c ch\u1ebf polysulfide.<\/div>\n
\u3010b\u1ea3n t\u00f3m t\u1eaft\u3011<\/div>\n
Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, nghi\u00ean c\u1ee9u v\u1ec1 khuy\u1ebft t\u1eadt khuy\u1ebft t\u1eadt tr\u00ean v\u1eadt li\u1ec7u \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ch\u1ee7 \u0111\u1ec1 r\u1ea5t n\u00f3ng. Tuy nhi\u00ean, h\u1ea7u h\u1ebft c\u00e1c nghi\u00ean c\u1ee9u v\u1eabn \u0111ang \u1edf giai \u0111o\u1ea1n t\u00ecm hi\u1ec3u c\u00e1c khi\u1ebfm khuy\u1ebft. V\u00ec l\u00fd do n\u00e0y, l\u00e0 m\u1ed9t nh\u00e0 khoa h\u1ecdc v\u1eadt li\u1ec7u, ch\u00fang ta n\u00ean bi\u1ebft th\u1ebf gi\u1edbi v\u00e0 thay \u0111\u1ed5i th\u1ebf gi\u1edbi. Trong qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u, ch\u00fang ta kh\u00f4ng ch\u1ec9 ph\u1ea3i nh\u1eadn ra th\u1ebf gi\u1edbi vi m\u00f4 c\u1ee7a c\u00e1c khuy\u1ebft t\u1eadt m\u00e0 c\u00f2n ph\u1ea3i c\u1ea3i ti\u1ebfn v\u00e0 ki\u1ec3m so\u00e1t c\u00e1c khuy\u1ebft t\u1eadt b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng h\u1ee3p ho\u1eb7c chu\u1ea9n b\u1ecb nh\u1ea5t \u0111\u1ecbnh. Hoa t\u00e0n kh\u00f4ng ph\u1ea3i l\u00e0 th\u1ee9 v\u00f4 t\u00e2m, th\u00e0nh Chunni h\u01a1n t\u1ee9 ph\u01b0\u01a1ng. C\u00e1c khuy\u1ebft t\u1eadt d\u01b0\u1eddng nh\u01b0 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u kh\u00f4ng nh\u1eefng kh\u00f4ng c\u00f3 t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn b\u1ea3n th\u00e2n v\u1eadt li\u1ec7u sau khi thi\u1ebft k\u1ebf \u0111\u1ecbnh h\u01b0\u1edbng, m\u00e0 c\u00f2n cung c\u1ea5p cho c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng t\u1ed1i \u01b0u ho\u00e1 v\u1eadt li\u1ec7u t\u1eeb c\u1ea5p \u0111\u1ed9 nguy\u00ean t\u1eed, \u0111\u1ec3 v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n. n\u00f3i chung. M\u1edf r\u1ed9ng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a n\u00f3 trong l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng v\u00e0 khoa h\u1ecdc nano v\u00e0 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u kh\u00e1c.<\/div>\n<\/div>\n<\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

In recent research, the design and regulation of material properties by combining defect engineering is currently a research hotspot. In transition metal oxides, sulfides and other materials, the presence of defects will significantly change their electronic structure and chemical properties, thereby achieving their wide application in the field of energy storage and conversion. For example,…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-1695","post","type-post","status-publish","format-standard","hentry","category-materials-weekly"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/1695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=1695"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/1695\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=1695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=1695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=1695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}